{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-49007", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-08-22T01:27:53.643Z", "datePublished": "2024-10-21T20:06:19.506Z", "dateUpdated": "2025-05-04T08:27:55.630Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T08:27:55.630Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix NULL pointer dereference in nilfs_palloc_commit_free_entry()\n\nSyzbot reported a null-ptr-deref bug:\n\n NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP\n frequency < 30 seconds\n general protection fault, probably for non-canonical address\n 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN\n KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]\n CPU: 1 PID: 3603 Comm: segctord Not tainted\n 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0\n Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google\n 10/11/2022\n RIP: 0010:nilfs_palloc_commit_free_entry+0xe5/0x6b0\n fs/nilfs2/alloc.c:608\n Code: 00 00 00 00 fc ff df 80 3c 02 00 0f 85 cd 05 00 00 48 b8 00 00 00\n 00 00 fc ff df 4c 8b 73 08 49 8d 7e 10 48 89 fa 48 c1 ea 03 <80> 3c 02\n 00 0f 85 26 05 00 00 49 8b 46 10 be a6 00 00 00 48 c7 c7\n RSP: 0018:ffffc90003dff830 EFLAGS: 00010212\n RAX: dffffc0000000000 RBX: ffff88802594e218 RCX: 000000000000000d\n RDX: 0000000000000002 RSI: 0000000000002000 RDI: 0000000000000010\n RBP: ffff888071880222 R08: 0000000000000005 R09: 000000000000003f\n R10: 000000000000000d R11: 0000000000000000 R12: ffff888071880158\n R13: ffff88802594e220 R14: 0000000000000000 R15: 0000000000000004\n FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000)\n knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007fb1c08316a8 CR3: 0000000018560000 CR4: 0000000000350ee0\n Call Trace:\n <TASK>\n nilfs_dat_commit_free fs/nilfs2/dat.c:114 [inline]\n nilfs_dat_commit_end+0x464/0x5f0 fs/nilfs2/dat.c:193\n nilfs_dat_commit_update+0x26/0x40 fs/nilfs2/dat.c:236\n nilfs_btree_commit_update_v+0x87/0x4a0 fs/nilfs2/btree.c:1940\n nilfs_btree_commit_propagate_v fs/nilfs2/btree.c:2016 [inline]\n nilfs_btree_propagate_v fs/nilfs2/btree.c:2046 [inline]\n nilfs_btree_propagate+0xa00/0xd60 fs/nilfs2/btree.c:2088\n nilfs_bmap_propagate+0x73/0x170 fs/nilfs2/bmap.c:337\n nilfs_collect_file_data+0x45/0xd0 fs/nilfs2/segment.c:568\n nilfs_segctor_apply_buffers+0x14a/0x470 fs/nilfs2/segment.c:1018\n nilfs_segctor_scan_file+0x3f4/0x6f0 fs/nilfs2/segment.c:1067\n nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1197 [inline]\n nilfs_segctor_collect fs/nilfs2/segment.c:1503 [inline]\n nilfs_segctor_do_construct+0x12fc/0x6af0 fs/nilfs2/segment.c:2045\n nilfs_segctor_construct+0x8e3/0xb30 fs/nilfs2/segment.c:2379\n nilfs_segctor_thread_construct fs/nilfs2/segment.c:2487 [inline]\n nilfs_segctor_thread+0x3c3/0xf30 fs/nilfs2/segment.c:2570\n kthread+0x2e4/0x3a0 kernel/kthread.c:376\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306\n </TASK>\n ...\n\nIf DAT metadata file is corrupted on disk, there is a case where\nreq->pr_desc_bh is NULL and blocknr is 0 at nilfs_dat_commit_end() during\na b-tree operation that cascadingly updates ancestor nodes of the b-tree,\nbecause nilfs_dat_commit_alloc() for a lower level block can initialize\nthe blocknr on the same DAT entry between nilfs_dat_prepare_end() and\nnilfs_dat_commit_end().\n\nIf this happens, nilfs_dat_commit_end() calls nilfs_dat_commit_free()\nwithout valid buffer heads in req->pr_desc_bh and req->pr_bitmap_bh, and\ncauses the NULL pointer dereference above in\nnilfs_palloc_commit_free_entry() function, which leads to a crash.\n\nFix this by adding a NULL check on req->pr_desc_bh and req->pr_bitmap_bh\nbefore nilfs_palloc_commit_free_entry() in nilfs_dat_commit_free().\n\nThis also calls nilfs_error() in that case to notify that there is a fatal\nflaw in the filesystem metadata and prevent further operations."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/nilfs2/dat.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "2f2c59506ae39496588ceb8b88bdbdbaed895d63", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "165c7a3b27a3857ebf57f626b9f38b48b6792e68", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "bc3fd3293887b4cf84a9109700faeb82de533c89", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "9a130b72e6bd1fb07fc3cde839dc6fb53da76f07", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "e858917ab785afe83c14f5ac141301216ccda847", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "33021419fd81efd3d729a7f19341ba4b98fe66ce", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "381b84f60e549ea98cec4666c6c728b1b3318756", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "f0a0ccda18d6fd826d7c7e7ad48a6ed61c20f8b4", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/nilfs2/dat.c"], "versions": [{"version": "4.9.335", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.301", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.268", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.226", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.158", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.82", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0.12", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.9.335"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.14.301"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.19.268"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.4.226"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.10.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.15.82"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/2f2c59506ae39496588ceb8b88bdbdbaed895d63"}, {"url": "https://git.kernel.org/stable/c/165c7a3b27a3857ebf57f626b9f38b48b6792e68"}, {"url": "https://git.kernel.org/stable/c/bc3fd3293887b4cf84a9109700faeb82de533c89"}, {"url": "https://git.kernel.org/stable/c/9a130b72e6bd1fb07fc3cde839dc6fb53da76f07"}, {"url": "https://git.kernel.org/stable/c/e858917ab785afe83c14f5ac141301216ccda847"}, {"url": "https://git.kernel.org/stable/c/33021419fd81efd3d729a7f19341ba4b98fe66ce"}, {"url": "https://git.kernel.org/stable/c/381b84f60e549ea98cec4666c6c728b1b3318756"}, {"url": "https://git.kernel.org/stable/c/f0a0ccda18d6fd826d7c7e7ad48a6ed61c20f8b4"}], "title": "nilfs2: fix NULL pointer dereference in nilfs_palloc_commit_free_entry()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2022-49007", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-22T13:14:21.732997Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-22T13:18:39.586Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2022-49007", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-22T13:14:21.732997Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-22T13:14:25.282Z"}}], "cna": {"title": "nilfs2: fix NULL pointer dereference in nilfs_palloc_commit_free_entry()", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "2f2c59506ae39496588ceb8b88bdbdbaed895d63", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "165c7a3b27a3857ebf57f626b9f38b48b6792e68", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "bc3fd3293887b4cf84a9109700faeb82de533c89", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "9a130b72e6bd1fb07fc3cde839dc6fb53da76f07", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "e858917ab785afe83c14f5ac141301216ccda847", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "33021419fd81efd3d729a7f19341ba4b98fe66ce", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "381b84f60e549ea98cec4666c6c728b1b3318756", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "f0a0ccda18d6fd826d7c7e7ad48a6ed61c20f8b4", "versionType": "git"}], "programFiles": ["fs/nilfs2/dat.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "unaffected", "version": "4.9.335", "versionType": "semver", "lessThanOrEqual": "4.9.*"}, {"status": "unaffected", "version": "4.14.301", "versionType": "semver", "lessThanOrEqual": "4.14.*"}, {"status": "unaffected", "version": "4.19.268", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.226", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.158", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.82", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.0.12", "versionType": "semver", "lessThanOrEqual": "6.0.*"}, {"status": "unaffected", "version": "6.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/nilfs2/dat.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/2f2c59506ae39496588ceb8b88bdbdbaed895d63"}, {"url": "https://git.kernel.org/stable/c/165c7a3b27a3857ebf57f626b9f38b48b6792e68"}, {"url": "https://git.kernel.org/stable/c/bc3fd3293887b4cf84a9109700faeb82de533c89"}, {"url": "https://git.kernel.org/stable/c/9a130b72e6bd1fb07fc3cde839dc6fb53da76f07"}, {"url": "https://git.kernel.org/stable/c/e858917ab785afe83c14f5ac141301216ccda847"}, {"url": "https://git.kernel.org/stable/c/33021419fd81efd3d729a7f19341ba4b98fe66ce"}, {"url": "https://git.kernel.org/stable/c/381b84f60e549ea98cec4666c6c728b1b3318756"}, {"url": "https://git.kernel.org/stable/c/f0a0ccda18d6fd826d7c7e7ad48a6ed61c20f8b4"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix NULL pointer dereference in nilfs_palloc_commit_free_entry()\n\nSyzbot reported a null-ptr-deref bug:\n\n NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP\n frequency < 30 seconds\n general protection fault, probably for non-canonical address\n 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN\n KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]\n CPU: 1 PID: 3603 Comm: segctord Not tainted\n 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0\n Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google\n 10/11/2022\n RIP: 0010:nilfs_palloc_commit_free_entry+0xe5/0x6b0\n fs/nilfs2/alloc.c:608\n Code: 00 00 00 00 fc ff df 80 3c 02 00 0f 85 cd 05 00 00 48 b8 00 00 00\n 00 00 fc ff df 4c 8b 73 08 49 8d 7e 10 48 89 fa 48 c1 ea 03 <80> 3c 02\n 00 0f 85 26 05 00 00 49 8b 46 10 be a6 00 00 00 48 c7 c7\n RSP: 0018:ffffc90003dff830 EFLAGS: 00010212\n RAX: dffffc0000000000 RBX: ffff88802594e218 RCX: 000000000000000d\n RDX: 0000000000000002 RSI: 0000000000002000 RDI: 0000000000000010\n RBP: ffff888071880222 R08: 0000000000000005 R09: 000000000000003f\n R10: 000000000000000d R11: 0000000000000000 R12: ffff888071880158\n R13: ffff88802594e220 R14: 0000000000000000 R15: 0000000000000004\n FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000)\n knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007fb1c08316a8 CR3: 0000000018560000 CR4: 0000000000350ee0\n Call Trace:\n <TASK>\n nilfs_dat_commit_free fs/nilfs2/dat.c:114 [inline]\n nilfs_dat_commit_end+0x464/0x5f0 fs/nilfs2/dat.c:193\n nilfs_dat_commit_update+0x26/0x40 fs/nilfs2/dat.c:236\n nilfs_btree_commit_update_v+0x87/0x4a0 fs/nilfs2/btree.c:1940\n nilfs_btree_commit_propagate_v fs/nilfs2/btree.c:2016 [inline]\n nilfs_btree_propagate_v fs/nilfs2/btree.c:2046 [inline]\n nilfs_btree_propagate+0xa00/0xd60 fs/nilfs2/btree.c:2088\n nilfs_bmap_propagate+0x73/0x170 fs/nilfs2/bmap.c:337\n nilfs_collect_file_data+0x45/0xd0 fs/nilfs2/segment.c:568\n nilfs_segctor_apply_buffers+0x14a/0x470 fs/nilfs2/segment.c:1018\n nilfs_segctor_scan_file+0x3f4/0x6f0 fs/nilfs2/segment.c:1067\n nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1197 [inline]\n nilfs_segctor_collect fs/nilfs2/segment.c:1503 [inline]\n nilfs_segctor_do_construct+0x12fc/0x6af0 fs/nilfs2/segment.c:2045\n nilfs_segctor_construct+0x8e3/0xb30 fs/nilfs2/segment.c:2379\n nilfs_segctor_thread_construct fs/nilfs2/segment.c:2487 [inline]\n nilfs_segctor_thread+0x3c3/0xf30 fs/nilfs2/segment.c:2570\n kthread+0x2e4/0x3a0 kernel/kthread.c:376\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306\n </TASK>\n ...\n\nIf DAT metadata file is corrupted on disk, there is a case where\nreq->pr_desc_bh is NULL and blocknr is 0 at nilfs_dat_commit_end() during\na b-tree operation that cascadingly updates ancestor nodes of the b-tree,\nbecause nilfs_dat_commit_alloc() for a lower level block can initialize\nthe blocknr on the same DAT entry between nilfs_dat_prepare_end() and\nnilfs_dat_commit_end().\n\nIf this happens, nilfs_dat_commit_end() calls nilfs_dat_commit_free()\nwithout valid buffer heads in req->pr_desc_bh and req->pr_bitmap_bh, and\ncauses the NULL pointer dereference above in\nnilfs_palloc_commit_free_entry() function, which leads to a crash.\n\nFix this by adding a NULL check on req->pr_desc_bh and req->pr_bitmap_bh\nbefore nilfs_palloc_commit_free_entry() in nilfs_dat_commit_free().\n\nThis also calls nilfs_error() in that case to notify that there is a fatal\nflaw in the filesystem metadata and prevent further operations."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.9.335"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.14.301"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.268"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.226"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.158"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.82"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.0.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T08:27:55.630Z"}}}, "cveMetadata": {"cveId": "CVE-2022-49007", "state": "PUBLISHED", "dateUpdated": "2025-05-04T08:27:55.630Z", "dateReserved": "2024-08-22T01:27:53.643Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-10-21T20:06:19.506Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "136389E3-6553-4B2F-94DB-15BC9CE17183", "versionEndExcluding": "4.9.335", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0EE18A3A-1E78-44D6-9FDB-B267E4819993", "versionEndExcluding": "4.14.301", "versionStartIncluding": "4.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "04705C94-71FA-46AB-AF73-B551892B0EBA", "versionEndExcluding": "4.19.268", "versionStartIncluding": "4.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "274F5087-5805-4D03-8C74-8517300658F1", "versionEndExcluding": "5.4.226", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D0FB1AF1-0A0B-4419-B25F-C61F17380E18", "versionEndExcluding": "5.10.158", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0DC20DB6-73C1-4465-B931-117BFB8EBB02", "versionEndExcluding": "5.15.82", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D6D56E90-F3EE-413D-B3E2-B518932F0C7D", "versionEndExcluding": "6.0.12", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*", "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*", "matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*", "matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*", "matchCriteriaId": "1C6E00FE-5FB9-4D20-A1A1-5A32128F9B76", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*", "matchCriteriaId": "35B26BE4-43A6-4A36-A7F6-5B3F572D9186", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:*", "matchCriteriaId": "3FFFB0B3-930D-408A-91E2-BAE0C2715D80", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:*", "matchCriteriaId": "8535320E-A0DB-4277-800E-D0CE5BBA59E8", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix NULL pointer dereference in nilfs_palloc_commit_free_entry()\n\nSyzbot reported a null-ptr-deref bug:\n\n NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP\n frequency < 30 seconds\n general protection fault, probably for non-canonical address\n 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN\n KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]\n CPU: 1 PID: 3603 Comm: segctord Not tainted\n 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0\n Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google\n 10/11/2022\n RIP: 0010:nilfs_palloc_commit_free_entry+0xe5/0x6b0\n fs/nilfs2/alloc.c:608\n Code: 00 00 00 00 fc ff df 80 3c 02 00 0f 85 cd 05 00 00 48 b8 00 00 00\n 00 00 fc ff df 4c 8b 73 08 49 8d 7e 10 48 89 fa 48 c1 ea 03 <80> 3c 02\n 00 0f 85 26 05 00 00 49 8b 46 10 be a6 00 00 00 48 c7 c7\n RSP: 0018:ffffc90003dff830 EFLAGS: 00010212\n RAX: dffffc0000000000 RBX: ffff88802594e218 RCX: 000000000000000d\n RDX: 0000000000000002 RSI: 0000000000002000 RDI: 0000000000000010\n RBP: ffff888071880222 R08: 0000000000000005 R09: 000000000000003f\n R10: 000000000000000d R11: 0000000000000000 R12: ffff888071880158\n R13: ffff88802594e220 R14: 0000000000000000 R15: 0000000000000004\n FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000)\n knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007fb1c08316a8 CR3: 0000000018560000 CR4: 0000000000350ee0\n Call Trace:\n <TASK>\n nilfs_dat_commit_free fs/nilfs2/dat.c:114 [inline]\n nilfs_dat_commit_end+0x464/0x5f0 fs/nilfs2/dat.c:193\n nilfs_dat_commit_update+0x26/0x40 fs/nilfs2/dat.c:236\n nilfs_btree_commit_update_v+0x87/0x4a0 fs/nilfs2/btree.c:1940\n nilfs_btree_commit_propagate_v fs/nilfs2/btree.c:2016 [inline]\n nilfs_btree_propagate_v fs/nilfs2/btree.c:2046 [inline]\n nilfs_btree_propagate+0xa00/0xd60 fs/nilfs2/btree.c:2088\n nilfs_bmap_propagate+0x73/0x170 fs/nilfs2/bmap.c:337\n nilfs_collect_file_data+0x45/0xd0 fs/nilfs2/segment.c:568\n nilfs_segctor_apply_buffers+0x14a/0x470 fs/nilfs2/segment.c:1018\n nilfs_segctor_scan_file+0x3f4/0x6f0 fs/nilfs2/segment.c:1067\n nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1197 [inline]\n nilfs_segctor_collect fs/nilfs2/segment.c:1503 [inline]\n nilfs_segctor_do_construct+0x12fc/0x6af0 fs/nilfs2/segment.c:2045\n nilfs_segctor_construct+0x8e3/0xb30 fs/nilfs2/segment.c:2379\n nilfs_segctor_thread_construct fs/nilfs2/segment.c:2487 [inline]\n nilfs_segctor_thread+0x3c3/0xf30 fs/nilfs2/segment.c:2570\n kthread+0x2e4/0x3a0 kernel/kthread.c:376\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306\n </TASK>\n ...\n\nIf DAT metadata file is corrupted on disk, there is a case where\nreq->pr_desc_bh is NULL and blocknr is 0 at nilfs_dat_commit_end() during\na b-tree operation that cascadingly updates ancestor nodes of the b-tree,\nbecause nilfs_dat_commit_alloc() for a lower level block can initialize\nthe blocknr on the same DAT entry between nilfs_dat_prepare_end() and\nnilfs_dat_commit_end().\n\nIf this happens, nilfs_dat_commit_end() calls nilfs_dat_commit_free()\nwithout valid buffer heads in req->pr_desc_bh and req->pr_bitmap_bh, and\ncauses the NULL pointer dereference above in\nnilfs_palloc_commit_free_entry() function, which leads to a crash.\n\nFix this by adding a NULL check on req->pr_desc_bh and req->pr_bitmap_bh\nbefore nilfs_palloc_commit_free_entry() in nilfs_dat_commit_free().\n\nThis also calls nilfs_error() in that case to notify that there is a fatal\nflaw in the filesystem metadata and prevent further operations."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: corrige la desreferencia de puntero NULL en nilfs_palloc_commit_free_entry() Syzbot inform\u00f3 un error de desreferencia de puntero nulo: NILFS (loop0): segctord iniciando. Intervalo de construcci\u00f3n = 5 segundos, frecuencia de CP &lt; 30 segundos. fallo de protecci\u00f3n general, probablemente para direcci\u00f3n no can\u00f3nica 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref en rango [0x000000000000010-0x0000000000000017] CPU: 1 PID: 3603 Comm: segctord No contaminado 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 Nombre del hardware: Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 RIP: 0010:nilfs_palloc_commit_free_entry+0xe5/0x6b0 fs/nilfs2/alloc.c:608 C\u00f3digo: 00 00 00 00 fc ff df 80 3c 02 00 0f 85 cd 05 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 73 08 49 8d 7e 10 48 89 fa 48 c1 ea 03 &lt;80&gt; 3c 02 00 0f 85 26 05 00 00 49 8b 46 10 ser a6 00 00 00 48 c7 c7 RSP: 0018:ffffc90003dff830 EFLAGS: 00010212 RAX: dffffc00000000000 RBX: ffff88802594e218 RCX: 000000000000000d RDX: 00000000000000002 RSI: 0000000000002000 RDI: 0000000000000010 RBP: ffff888071880222 R08: 000000000000005 R09: 000000000000003f R10: 000000000000000d R11: 0000000000000000 R12: ffff888071880158 R13: ffff88802594e220 R14: 0000000000000000 R15: 0000000000000004 FS: 000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb1c08316a8 CR3: 0000000018560000 CR4: 0000000000350ee0 Seguimiento de llamadas: nilfs_dat_commit_free fs/nilfs2/dat.c:114 [en l\u00ednea] nilfs_dat_commit_end+0x464/0x5f0 fs/nilfs2/dat.c:193 nilfs_dat_commit_update+0x26/0x40 fs/nilfs2/dat.c:236 nilfs_btree_commit_update_v+0x87/0x4a0 fs/nilfs2/btree.c:1940 nilfs_btree_commit_propagate_v fs/nilfs2/btree.c:2016 [en l\u00ednea] nilfs_btree_propagate_v fs/nilfs2/btree.c:2046 [en l\u00ednea] nilfs_btree_propagate+0xa00/0xd60 fs/nilfs2/btree.c:2088 nilfs_bmap_propagate+0x73/0x170 fs/nilfs2/bmap.c:337 nilfs_collect_file_data+0x45/0xd0 fs/nilfs2/segment.c:568 nilfs_segctor_apply_buffers+0x14a/0x470 fs/nilfs2/segment.c:1018 nilfs_segctor_scan_file+0x3f4/0x6f0 fs/nilfs2/segment.c:1067 nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1197 [en l\u00ednea] nilfs_segctor_collect fs/nilfs2/segment.c:1503 [en l\u00ednea] nilfs_segctor_do_construct+0x12fc/0x6af0 fs/nilfs2/segment.c:2045 nilfs_segctor_construct+0x8e3/0xb30 fs/nilfs2/segment.c:2379 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2487 [en l\u00ednea] nilfs_segctor_thread+0x3c3/0xf30 fs/nilfs2/segment.c:2570 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 ... Si el archivo de metadatos DAT est\u00e1 da\u00f1ado en el disco, existe un caso en el que req-&gt;pr_desc_bh es NULL y blocknr es 0 en nilfs_dat_commit_end() durante una operaci\u00f3n de \u00e1rbol b que actualiza en cascada los nodos ancestros del \u00e1rbol b, porque nilfs_dat_commit_alloc() para un bloque de nivel inferior puede inicializar el blocknr en la misma entrada DAT entre nilfs_dat_prepare_end() y nilfs_dat_commit_end(). Si esto sucede, nilfs_dat_commit_end() llama a nilfs_dat_commit_free() sin encabezados de b\u00fafer v\u00e1lidos en req-&gt;pr_desc_bh y req-&gt;pr_bitmap_bh, y provoca la desreferencia del puntero NULL anterior en la funci\u00f3n nilfs_palloc_commit_free_entry(), lo que provoca un bloqueo. Solucione este problema agregando una comprobaci\u00f3n NULL en req-&gt;pr_desc_bh y req-&gt;pr_bitmap_bh antes de nilfs_palloc_commit_free_entry() en nilfs_dat_commit_free(). Esto tambi\u00e9n llama a nilfs_error() en ese caso para notificar que hay un fallo fatal en los metadatos del sistema de archivos y evitar operaciones futuras."}], "id": "CVE-2022-49007", "lastModified": "2024-10-25T14:35:25.910", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "[email protected]", "type": "Primary"}]}, "published": "2024-10-21T20:15:12.197", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/165c7a3b27a3857ebf57f626b9f38b48b6792e68"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2f2c59506ae39496588ceb8b88bdbdbaed895d63"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/33021419fd81efd3d729a7f19341ba4b98fe66ce"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/381b84f60e549ea98cec4666c6c728b1b3318756"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9a130b72e6bd1fb07fc3cde839dc6fb53da76f07"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bc3fd3293887b4cf84a9109700faeb82de533c89"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e858917ab785afe83c14f5ac141301216ccda847"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f0a0ccda18d6fd826d7c7e7ad48a6ed61c20f8b4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: nilfs2: fix NULL pointer dereference in nilfs_palloc_commit_free_entry()", "id": "2320740", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2320740"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnilfs2: fix NULL pointer dereference in nilfs_palloc_commit_free_entry()\nSyzbot reported a null-ptr-deref bug:\nNILFS (loop0): segctord starting. Construction interval = 5 seconds, CP\nfrequency < 30 seconds\ngeneral protection fault, probably for non-canonical address\n0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]\nCPU: 1 PID: 3603 Comm: segctord Not tainted\n6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0\nHardware name: Google Compute Engine/Google Compute Engine, BIOS Google\n10/11/2022\nRIP: 0010:nilfs_palloc_commit_free_entry+0xe5/0x6b0\nfs/nilfs2/alloc.c:608\nCode: 00 00 00 00 fc ff df 80 3c 02 00 0f 85 cd 05 00 00 48 b8 00 00 00\n00 00 fc ff df 4c 8b 73 08 49 8d 7e 10 48 89 fa 48 c1 ea 03 <80> 3c 02\n00 0f 85 26 05 00 00 49 8b 46 10 be a6 00 00 00 48 c7 c7\nRSP: 0018:ffffc90003dff830 EFLAGS: 00010212\nRAX: dffffc0000000000 RBX: ffff88802594e218 RCX: 000000000000000d\nRDX: 0000000000000002 RSI: 0000000000002000 RDI: 0000000000000010\nRBP: ffff888071880222 R08: 0000000000000005 R09: 000000000000003f\nR10: 000000000000000d R11: 0000000000000000 R12: ffff888071880158\nR13: ffff88802594e220 R14: 0000000000000000 R15: 0000000000000004\nFS: 0000000000000000(0000) GS:ffff8880b9b00000(0000)\nknlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007fb1c08316a8 CR3: 0000000018560000 CR4: 0000000000350ee0\nCall Trace:\n<TASK>\nnilfs_dat_commit_free fs/nilfs2/dat.c:114 [inline]\nnilfs_dat_commit_end+0x464/0x5f0 fs/nilfs2/dat.c:193\nnilfs_dat_commit_update+0x26/0x40 fs/nilfs2/dat.c:236\nnilfs_btree_commit_update_v+0x87/0x4a0 fs/nilfs2/btree.c:1940\nnilfs_btree_commit_propagate_v fs/nilfs2/btree.c:2016 [inline]\nnilfs_btree_propagate_v fs/nilfs2/btree.c:2046 [inline]\nnilfs_btree_propagate+0xa00/0xd60 fs/nilfs2/btree.c:2088\nnilfs_bmap_propagate+0x73/0x170 fs/nilfs2/bmap.c:337\nnilfs_collect_file_data+0x45/0xd0 fs/nilfs2/segment.c:568\nnilfs_segctor_apply_buffers+0x14a/0x470 fs/nilfs2/segment.c:1018\nnilfs_segctor_scan_file+0x3f4/0x6f0 fs/nilfs2/segment.c:1067\nnilfs_segctor_collect_blocks fs/nilfs2/segment.c:1197 [inline]\nnilfs_segctor_collect fs/nilfs2/segment.c:1503 [inline]\nnilfs_segctor_do_construct+0x12fc/0x6af0 fs/nilfs2/segment.c:2045\nnilfs_segctor_construct+0x8e3/0xb30 fs/nilfs2/segment.c:2379\nnilfs_segctor_thread_construct fs/nilfs2/segment.c:2487 [inline]\nnilfs_segctor_thread+0x3c3/0xf30 fs/nilfs2/segment.c:2570\nkthread+0x2e4/0x3a0 kernel/kthread.c:376\nret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306\n</TASK>\n...\nIf DAT metadata file is corrupted on disk, there is a case where\nreq->pr_desc_bh is NULL and blocknr is 0 at nilfs_dat_commit_end() during\na b-tree operation that cascadingly updates ancestor nodes of the b-tree,\nbecause nilfs_dat_commit_alloc() for a lower level block can initialize\nthe blocknr on the same DAT entry between nilfs_dat_prepare_end() and\nnilfs_dat_commit_end().\nIf this happens, nilfs_dat_commit_end() calls nilfs_dat_commit_free()\nwithout valid buffer heads in req->pr_desc_bh and req->pr_bitmap_bh, and\ncauses the NULL pointer dereference above in\nnilfs_palloc_commit_free_entry() function, which leads to a crash.\nFix this by adding a NULL check on req->pr_desc_bh and req->pr_bitmap_bh\nbefore nilfs_palloc_commit_free_entry() in nilfs_dat_commit_free().\nThis also calls nilfs_error() in that case to notify that there is a fatal\nflaw in the filesystem metadata and prevent further operations."], "name": "CVE-2022-49007", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49007\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49007\nhttps://lore.kernel.org/linux-cve-announce/2024102151-CVE-2022-49007-c02b@gregkh/T"], "threat_severity": "Moderate"}