{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-49880", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-05-01T14:05:17.239Z", "datePublished": "2025-05-01T14:10:27.947Z", "dateUpdated": "2025-05-04T08:47:40.387Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T08:47:40.387Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix warning in 'ext4_da_release_space'\n\nSyzkaller report issue as follows:\nEXT4-fs (loop0): Free/Dirty block details\nEXT4-fs (loop0): free_blocks=0\nEXT4-fs (loop0): dirty_blocks=0\nEXT4-fs (loop0): Block reservation details\nEXT4-fs (loop0): i_reserved_data_blocks=0\nEXT4-fs warning (device loop0): ext4_da_release_space:1527: ext4_da_release_space: ino 18, to_free 1 with only 0 reserved data blocks\n------------[ cut here ]------------\nWARNING: CPU: 0 PID: 92 at fs/ext4/inode.c:1528 ext4_da_release_space+0x25e/0x370 fs/ext4/inode.c:1524\nModules linked in:\nCPU: 0 PID: 92 Comm: kworker/u4:4 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022\nWorkqueue: writeback wb_workfn (flush-7:0)\nRIP: 0010:ext4_da_release_space+0x25e/0x370 fs/ext4/inode.c:1528\nRSP: 0018:ffffc900015f6c90 EFLAGS: 00010296\nRAX: 42215896cd52ea00 RBX: 0000000000000000 RCX: 42215896cd52ea00\nRDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000\nRBP: 1ffff1100e907d96 R08: ffffffff816aa79d R09: fffff520002bece5\nR10: fffff520002bece5 R11: 1ffff920002bece4 R12: ffff888021fd2000\nR13: ffff88807483ecb0 R14: 0000000000000001 R15: ffff88807483e740\nFS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005555569ba628 CR3: 000000000c88e000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n <TASK>\n ext4_es_remove_extent+0x1ab/0x260 fs/ext4/extents_status.c:1461\n mpage_release_unused_pages+0x24d/0xef0 fs/ext4/inode.c:1589\n ext4_writepages+0x12eb/0x3be0 fs/ext4/inode.c:2852\n do_writepages+0x3c3/0x680 mm/page-writeback.c:2469\n __writeback_single_inode+0xd1/0x670 fs/fs-writeback.c:1587\n writeback_sb_inodes+0xb3b/0x18f0 fs/fs-writeback.c:1870\n wb_writeback+0x41f/0x7b0 fs/fs-writeback.c:2044\n wb_do_writeback fs/fs-writeback.c:2187 [inline]\n wb_workfn+0x3cb/0xef0 fs/fs-writeback.c:2227\n process_one_work+0x877/0xdb0 kernel/workqueue.c:2289\n worker_thread+0xb14/0x1330 kernel/workqueue.c:2436\n kthread+0x266/0x300 kernel/kthread.c:376\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306\n </TASK>\n\nAbove issue may happens as follows:\next4_da_write_begin\n ext4_create_inline_data\n ext4_clear_inode_flag(inode, EXT4_INODE_EXTENTS);\n ext4_set_inode_flag(inode, EXT4_INODE_INLINE_DATA);\n__ext4_ioctl\n ext4_ext_migrate -> will lead to eh->eh_entries not zero, and set extent flag\next4_da_write_begin\n ext4_da_convert_inline_data_to_extent\n ext4_da_write_inline_data_begin\n ext4_da_map_blocks\n ext4_insert_delayed_block\n\t if (!ext4_es_scan_clu(inode, &ext4_es_is_delonly, lblk))\n\t if (!ext4_es_scan_clu(inode, &ext4_es_is_mapped, lblk))\n\t ext4_clu_mapped(inode, EXT4_B2C(sbi, lblk)); -> will return 1\n\t allocated = true;\n ext4_es_insert_delayed_block(inode, lblk, allocated);\next4_writepages\n mpage_map_and_submit_extent(handle, &mpd, &give_up_on_write); -> return -ENOSPC\n mpage_release_unused_pages(&mpd, give_up_on_write); -> give_up_on_write == 1\n ext4_es_remove_extent\n ext4_da_release_space(inode, reserved);\n if (unlikely(to_free > ei->i_reserved_data_blocks))\n\t -> to_free == 1 but ei->i_reserved_data_blocks == 0\n\t -> then trigger warning as above\n\nTo solve above issue, forbid inode do migrate which has inline data."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ext4/migrate.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "0de5ee103747fd3a24f1c010c79caabe35e8f0bb", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "c3bf1e95cfa7d950dc3c064d0c2e3d06b427bc63", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "890d738f569fa9412b70ba09f15407f17a52da20", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "72743d5598b9096950bbfd6a9b7f173d156eea97", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "5370b965b7a945bb8f48b9ee23d83a76a947902e", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "0a43c015e98121c91a76154edf42280ce1a8a883", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "89bee03d2fb8c54119b38ac6c24e7d60fae036b6", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "1b8f787ef547230a3249bcf897221ef0cc78481b", "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/ext4/migrate.c"], "versions": [{"version": "4.9.333", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.299", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.265", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.224", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.154", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.78", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0.8", "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": "4.9.333"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.14.299"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.19.265"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.4.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.10.154"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.15.78"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.0.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0de5ee103747fd3a24f1c010c79caabe35e8f0bb"}, {"url": "https://git.kernel.org/stable/c/c3bf1e95cfa7d950dc3c064d0c2e3d06b427bc63"}, {"url": "https://git.kernel.org/stable/c/890d738f569fa9412b70ba09f15407f17a52da20"}, {"url": "https://git.kernel.org/stable/c/72743d5598b9096950bbfd6a9b7f173d156eea97"}, {"url": "https://git.kernel.org/stable/c/5370b965b7a945bb8f48b9ee23d83a76a947902e"}, {"url": "https://git.kernel.org/stable/c/0a43c015e98121c91a76154edf42280ce1a8a883"}, {"url": "https://git.kernel.org/stable/c/89bee03d2fb8c54119b38ac6c24e7d60fae036b6"}, {"url": "https://git.kernel.org/stable/c/1b8f787ef547230a3249bcf897221ef0cc78481b"}], "title": "ext4: fix warning in 'ext4_da_release_space'", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BD342BE3-BDB3-4031-9F0B-DE4F90246387", "versionEndExcluding": "4.9.333", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "2FE9A829-20E8-4929-AE9B-02761322A926", "versionEndExcluding": "4.14.299", "versionStartIncluding": "4.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "ABED5D97-9B16-4CF6-86E3-D5F5C4358E35", "versionEndExcluding": "4.19.265", "versionStartIncluding": "4.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "1D67A077-EB45-4ADE-94CD-F9A76F6C319C", "versionEndExcluding": "5.4.224", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "475D097C-AB5A-4CF5-899F-413077854ABD", "versionEndExcluding": "5.10.154", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "AB8B27B9-B41B-42D5-AE67-0A89A8A8EEB1", "versionEndExcluding": "5.15.78", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "EC9A754E-625D-42F3-87A7-960D643E2867", "versionEndExcluding": "6.0.8", "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}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix warning in 'ext4_da_release_space'\n\nSyzkaller report issue as follows:\nEXT4-fs (loop0): Free/Dirty block details\nEXT4-fs (loop0): free_blocks=0\nEXT4-fs (loop0): dirty_blocks=0\nEXT4-fs (loop0): Block reservation details\nEXT4-fs (loop0): i_reserved_data_blocks=0\nEXT4-fs warning (device loop0): ext4_da_release_space:1527: ext4_da_release_space: ino 18, to_free 1 with only 0 reserved data blocks\n------------[ cut here ]------------\nWARNING: CPU: 0 PID: 92 at fs/ext4/inode.c:1528 ext4_da_release_space+0x25e/0x370 fs/ext4/inode.c:1524\nModules linked in:\nCPU: 0 PID: 92 Comm: kworker/u4:4 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022\nWorkqueue: writeback wb_workfn (flush-7:0)\nRIP: 0010:ext4_da_release_space+0x25e/0x370 fs/ext4/inode.c:1528\nRSP: 0018:ffffc900015f6c90 EFLAGS: 00010296\nRAX: 42215896cd52ea00 RBX: 0000000000000000 RCX: 42215896cd52ea00\nRDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000\nRBP: 1ffff1100e907d96 R08: ffffffff816aa79d R09: fffff520002bece5\nR10: fffff520002bece5 R11: 1ffff920002bece4 R12: ffff888021fd2000\nR13: ffff88807483ecb0 R14: 0000000000000001 R15: ffff88807483e740\nFS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005555569ba628 CR3: 000000000c88e000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n <TASK>\n ext4_es_remove_extent+0x1ab/0x260 fs/ext4/extents_status.c:1461\n mpage_release_unused_pages+0x24d/0xef0 fs/ext4/inode.c:1589\n ext4_writepages+0x12eb/0x3be0 fs/ext4/inode.c:2852\n do_writepages+0x3c3/0x680 mm/page-writeback.c:2469\n __writeback_single_inode+0xd1/0x670 fs/fs-writeback.c:1587\n writeback_sb_inodes+0xb3b/0x18f0 fs/fs-writeback.c:1870\n wb_writeback+0x41f/0x7b0 fs/fs-writeback.c:2044\n wb_do_writeback fs/fs-writeback.c:2187 [inline]\n wb_workfn+0x3cb/0xef0 fs/fs-writeback.c:2227\n process_one_work+0x877/0xdb0 kernel/workqueue.c:2289\n worker_thread+0xb14/0x1330 kernel/workqueue.c:2436\n kthread+0x266/0x300 kernel/kthread.c:376\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306\n </TASK>\n\nAbove issue may happens as follows:\next4_da_write_begin\n ext4_create_inline_data\n ext4_clear_inode_flag(inode, EXT4_INODE_EXTENTS);\n ext4_set_inode_flag(inode, EXT4_INODE_INLINE_DATA);\n__ext4_ioctl\n ext4_ext_migrate -> will lead to eh->eh_entries not zero, and set extent flag\next4_da_write_begin\n ext4_da_convert_inline_data_to_extent\n ext4_da_write_inline_data_begin\n ext4_da_map_blocks\n ext4_insert_delayed_block\n\t if (!ext4_es_scan_clu(inode, &ext4_es_is_delonly, lblk))\n\t if (!ext4_es_scan_clu(inode, &ext4_es_is_mapped, lblk))\n\t ext4_clu_mapped(inode, EXT4_B2C(sbi, lblk)); -> will return 1\n\t allocated = true;\n ext4_es_insert_delayed_block(inode, lblk, allocated);\next4_writepages\n mpage_map_and_submit_extent(handle, &mpd, &give_up_on_write); -> return -ENOSPC\n mpage_release_unused_pages(&mpd, give_up_on_write); -> give_up_on_write == 1\n ext4_es_remove_extent\n ext4_da_release_space(inode, reserved);\n if (unlikely(to_free > ei->i_reserved_data_blocks))\n\t -> to_free == 1 but ei->i_reserved_data_blocks == 0\n\t -> then trigger warning as above\n\nTo solve above issue, forbid inode do migrate which has inline data."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ext4: correcci\u00f3n de advertencia en 'ext4_da_release_space' Syzkaller informa del problema de la siguiente manera: EXT4-fs (loop0): Detalles del bloque libre/sucio EXT4-fs (loop0): free_blocks=0 EXT4-fs (loop0): dirty_blocks=0 EXT4-fs (loop0): Detalles de la reserva del bloque EXT4-fs (loop0): i_reserved_data_blocks=0 Advertencia de EXT4-fs (dispositivo loop0): ext4_da_release_space:1527: ext4_da_release_space: ino 18, to_free 1 con solo 0 bloques de datos reservados ------------[ cortar aqu\u00ed ]------------ ADVERTENCIA: CPU: 0 PID: 92 en fs/ext4/inode.c:1528 ext4_da_release_space+0x25e/0x370 fs/ext4/inode.c:1524 M\u00f3dulos vinculados: CPU: 0 PID: 92 Comm: kworker/u4:4 No contaminado 6.0.0-syzkaller-09423-g493ffd6605b2 #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 22/09/2022 Cola de trabajo: escritura diferida wb_workfn (flush-7:0) RIP: 0010:ext4_da_release_space+0x25e/0x370 fs/ext4/inode.c:1528 RSP: 0018:ffffc900015f6c90 EFLAGS: 00010296 RAX: 42215896cd52ea00 RBX: 0000000000000000 RCX: 42215896cd52ea00 RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000 RBP: 1ffff1100e907d96 R08: ffffffff816aa79d R09: fffff520002bece5 R10: fffff520002bece5 R11: 1ffff920002bece4 R12: ffff888021fd2000 R13: ffff88807483ecb0 R14: 0000000000000001 R15: ffff88807483e740FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555569ba628 CR3: 000000000c88e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Rastreo de llamadas: ext4_es_remove_extent+0x1ab/0x260 fs/ext4/extents_status.c:1461 mpage_release_unused_pages+0x24d/0xef0 fs/ext4/inode.c:1589 ext4_writepages+0x12eb/0x3be0 fs/ext4/inode.c:2852 do_writepages+0x3c3/0x680 mm/page-writeback.c:2469 __writeback_single_inode+0xd1/0x670 fs/fs-writeback.c:1587 writeback_sb_inodes+0xb3b/0x18f0 fs/fs-writeback.c:1870 wb_writeback+0x41f/0x7b0 fs/fs-writeback.c:2044 wb_do_writeback fs/fs-writeback.c:2187 [inline] wb_workfn+0x3cb/0xef0 fs/fs-writeback.c:2227 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 El problema anterior puede ocurrir de la siguiente manera: ext4_da_write_begin ext4_create_inline_data ext4_clear_inode_flag(inode, EXT4_INODE_EXTENTS); ext4_set_inode_flag(inode, EXT4_INODE_INLINE_DATA); __ext4_ioctl ext4_ext_migrate -&gt; har\u00e1 que eh-&gt;eh_entries no sea cero y establecer\u00e1 el indicador de extensi\u00f3n ext4_da_write_begin ext4_da_convert_inline_data_to_extent ext4_da_write_inline_data_begin ext4_da_map_blocks ext4_insert_delayed_block si (!ext4_es_scan_clu(inodo, &amp;ext4_es_is_delonly, lblk)) si (!ext4_es_scan_clu(inodo, &amp;ext4_es_is_mapped, lblk)) ext4_clu_mapped(inodo, EXT4_B2C(sbi, lblk)); -&gt; devolver\u00e1 1 asignado = verdadero; ext4_es_insert_delayed_block(inodo, lblk, asignado); ext4_writepages mpage_map_and_submit_extent(handle, &amp;mpd, &amp;give_up_on_write); -&gt; return -ENOSPC mpage_release_unused_pages(&amp;mpd, give_up_on_write); -&gt; give_up_on_write == 1 ext4_es_remove_extent ext4_da_release_space(inode, reserved); if (unlikely(to_free &gt; ei-&gt;i_reserved_data_blocks)) -&gt; to_free == 1 but ei-&gt;i_reserved_data_blocks == 0 -&gt; then trigger WARNING Como se indica arriba, para resolver el problema anterior, proh\u00edba migrar los inodes que tienen datos en l\u00ednea."}], "id": "CVE-2022-49880", "lastModified": "2025-05-07T13:21:17.940", "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": "2025-05-01T15:16:12.960", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0a43c015e98121c91a76154edf42280ce1a8a883"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0de5ee103747fd3a24f1c010c79caabe35e8f0bb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1b8f787ef547230a3249bcf897221ef0cc78481b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5370b965b7a945bb8f48b9ee23d83a76a947902e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/72743d5598b9096950bbfd6a9b7f173d156eea97"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/890d738f569fa9412b70ba09f15407f17a52da20"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/89bee03d2fb8c54119b38ac6c24e7d60fae036b6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c3bf1e95cfa7d950dc3c064d0c2e3d06b427bc63"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ext4: fix warning in 'ext4_da_release_space'", "id": "2363510", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2363510"}, "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"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\next4: fix warning in 'ext4_da_release_space'\nSyzkaller report issue as follows:\nEXT4-fs (loop0): Free/Dirty block details\nEXT4-fs (loop0): free_blocks=0\nEXT4-fs (loop0): dirty_blocks=0\nEXT4-fs (loop0): Block reservation details\nEXT4-fs (loop0): i_reserved_data_blocks=0\nEXT4-fs warning (device loop0): ext4_da_release_space:1527: ext4_da_release_space: ino 18, to_free 1 with only 0 reserved data blocks\n------------[ cut here ]------------\nWARNING: CPU: 0 PID: 92 at fs/ext4/inode.c:1528 ext4_da_release_space+0x25e/0x370 fs/ext4/inode.c:1524\nModules linked in:\nCPU: 0 PID: 92 Comm: kworker/u4:4 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022\nWorkqueue: writeback wb_workfn (flush-7:0)\nRIP: 0010:ext4_da_release_space+0x25e/0x370 fs/ext4/inode.c:1528\nRSP: 0018:ffffc900015f6c90 EFLAGS: 00010296\nRAX: 42215896cd52ea00 RBX: 0000000000000000 RCX: 42215896cd52ea00\nRDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000\nRBP: 1ffff1100e907d96 R08: ffffffff816aa79d R09: fffff520002bece5\nR10: fffff520002bece5 R11: 1ffff920002bece4 R12: ffff888021fd2000\nR13: ffff88807483ecb0 R14: 0000000000000001 R15: ffff88807483e740\nFS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005555569ba628 CR3: 000000000c88e000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n<TASK>\next4_es_remove_extent+0x1ab/0x260 fs/ext4/extents_status.c:1461\nmpage_release_unused_pages+0x24d/0xef0 fs/ext4/inode.c:1589\next4_writepages+0x12eb/0x3be0 fs/ext4/inode.c:2852\ndo_writepages+0x3c3/0x680 mm/page-writeback.c:2469\n__writeback_single_inode+0xd1/0x670 fs/fs-writeback.c:1587\nwriteback_sb_inodes+0xb3b/0x18f0 fs/fs-writeback.c:1870\nwb_writeback+0x41f/0x7b0 fs/fs-writeback.c:2044\nwb_do_writeback fs/fs-writeback.c:2187 [inline]\nwb_workfn+0x3cb/0xef0 fs/fs-writeback.c:2227\nprocess_one_work+0x877/0xdb0 kernel/workqueue.c:2289\nworker_thread+0xb14/0x1330 kernel/workqueue.c:2436\nkthread+0x266/0x300 kernel/kthread.c:376\nret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306\n</TASK>\nAbove issue may happens as follows:\next4_da_write_begin\next4_create_inline_data\next4_clear_inode_flag(inode, EXT4_INODE_EXTENTS);\next4_set_inode_flag(inode, EXT4_INODE_INLINE_DATA);\n__ext4_ioctl\next4_ext_migrate -> will lead to eh->eh_entries not zero, and set extent flag\next4_da_write_begin\next4_da_convert_inline_data_to_extent\next4_da_write_inline_data_begin\next4_da_map_blocks\next4_insert_delayed_block\nif (!ext4_es_scan_clu(inode, &ext4_es_is_delonly, lblk))\nif (!ext4_es_scan_clu(inode, &ext4_es_is_mapped, lblk))\next4_clu_mapped(inode, EXT4_B2C(sbi, lblk)); -> will return 1\nallocated = true;\next4_es_insert_delayed_block(inode, lblk, allocated);\next4_writepages\nmpage_map_and_submit_extent(handle, &mpd, &give_up_on_write); -> return -ENOSPC\nmpage_release_unused_pages(&mpd, give_up_on_write); -> give_up_on_write == 1\next4_es_remove_extent\next4_da_release_space(inode, reserved);\nif (unlikely(to_free > ei->i_reserved_data_blocks))\n-> to_free == 1 but ei->i_reserved_data_blocks == 0\n-> then trigger warning as above\nTo solve above issue, forbid inode do migrate which has inline data."], "name": "CVE-2022-49880", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49880\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49880\nhttps://lore.kernel.org/linux-cve-announce/2025050154-CVE-2022-49880-709b@gregkh/T"], "threat_severity": "Moderate"}