{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-46735", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-09-11T15:12:18.257Z", "datePublished": "2024-09-18T07:11:57.279Z", "dateUpdated": "2025-05-04T09:33:02.432Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T09:33:02.432Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nublk_drv: fix NULL pointer dereference in ublk_ctrl_start_recovery()\n\nWhen two UBLK_CMD_START_USER_RECOVERY commands are submitted, the\nfirst one sets 'ubq->ubq_daemon' to NULL, and the second one triggers\nWARN in ublk_queue_reinit() and subsequently a NULL pointer dereference\nissue.\n\nFix it by adding the check in ublk_ctrl_start_recovery() and return\nimmediately in case of zero 'ub->nr_queues_ready'.\n\n BUG: kernel NULL pointer dereference, address: 0000000000000028\n RIP: 0010:ublk_ctrl_start_recovery.constprop.0+0x82/0x180\n Call Trace:\n <TASK>\n ? __die+0x20/0x70\n ? page_fault_oops+0x75/0x170\n ? exc_page_fault+0x64/0x140\n ? asm_exc_page_fault+0x22/0x30\n ? ublk_ctrl_start_recovery.constprop.0+0x82/0x180\n ublk_ctrl_uring_cmd+0x4f7/0x6c0\n ? pick_next_task_idle+0x26/0x40\n io_uring_cmd+0x9a/0x1b0\n io_issue_sqe+0x193/0x3f0\n io_wq_submit_work+0x9b/0x390\n io_worker_handle_work+0x165/0x360\n io_wq_worker+0xcb/0x2f0\n ? finish_task_switch.isra.0+0x203/0x290\n ? finish_task_switch.isra.0+0x203/0x290\n ? __pfx_io_wq_worker+0x10/0x10\n ret_from_fork+0x2d/0x50\n ? __pfx_io_wq_worker+0x10/0x10\n ret_from_fork_asm+0x1a/0x30\n </TASK>"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/block/ublk_drv.c"], "versions": [{"version": "c732a852b419fa057b53657e2daaf9433940391c", "lessThan": "ca249435893dda766f3845c15ca77ca5672022d8", "status": "affected", "versionType": "git"}, {"version": "c732a852b419fa057b53657e2daaf9433940391c", "lessThan": "136a29d8112df4ea0a57f9602ddf3579e04089dc", "status": "affected", "versionType": "git"}, {"version": "c732a852b419fa057b53657e2daaf9433940391c", "lessThan": "7c890ef60bf417d3fe5c6f7a9f6cef0e1d77f74f", "status": "affected", "versionType": "git"}, {"version": "c732a852b419fa057b53657e2daaf9433940391c", "lessThan": "e58f5142f88320a5b1449f96a146f2f24615c5c7", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/block/ublk_drv.c"], "versions": [{"version": "6.1", "status": "affected"}, {"version": "0", "lessThan": "6.1", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.110", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.51", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.10.10", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.11", "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:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.1.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.6.51"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.10.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.11"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ca249435893dda766f3845c15ca77ca5672022d8"}, {"url": "https://git.kernel.org/stable/c/136a29d8112df4ea0a57f9602ddf3579e04089dc"}, {"url": "https://git.kernel.org/stable/c/7c890ef60bf417d3fe5c6f7a9f6cef0e1d77f74f"}, {"url": "https://git.kernel.org/stable/c/e58f5142f88320a5b1449f96a146f2f24615c5c7"}], "title": "ublk_drv: fix NULL pointer dereference in ublk_ctrl_start_recovery()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-09-29T14:53:03.707507Z", "id": "CVE-2024-46735", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-29T14:53:18.545Z"}}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FD34EEF6-E0F8-42D6-BF92-8EB851A6ADEC", "versionEndExcluding": "6.1.110", "versionStartIncluding": "6.1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E4529134-BAC4-4776-840B-304009E181A0", "versionEndExcluding": "6.6.51", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "ACDEE48C-137A-4731-90D0-A675865E1BED", "versionEndExcluding": "6.10.10", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*", "matchCriteriaId": "8B3CE743-2126-47A3-8B7C-822B502CF119", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*", "matchCriteriaId": "4DEB27E7-30AA-45CC-8934-B89263EF3551", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*", "matchCriteriaId": "E0005AEF-856E-47EB-BFE4-90C46899394D", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*", "matchCriteriaId": "39889A68-6D34-47A6-82FC-CD0BF23D6754", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:*", "matchCriteriaId": "B8383ABF-1457-401F-9B61-EE50F4C61F4F", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc6:*:*:*:*:*:*", "matchCriteriaId": "B77A9280-37E6-49AD-B559-5B23A3B1DC3D", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nublk_drv: fix NULL pointer dereference in ublk_ctrl_start_recovery()\n\nWhen two UBLK_CMD_START_USER_RECOVERY commands are submitted, the\nfirst one sets 'ubq->ubq_daemon' to NULL, and the second one triggers\nWARN in ublk_queue_reinit() and subsequently a NULL pointer dereference\nissue.\n\nFix it by adding the check in ublk_ctrl_start_recovery() and return\nimmediately in case of zero 'ub->nr_queues_ready'.\n\n BUG: kernel NULL pointer dereference, address: 0000000000000028\n RIP: 0010:ublk_ctrl_start_recovery.constprop.0+0x82/0x180\n Call Trace:\n <TASK>\n ? __die+0x20/0x70\n ? page_fault_oops+0x75/0x170\n ? exc_page_fault+0x64/0x140\n ? asm_exc_page_fault+0x22/0x30\n ? ublk_ctrl_start_recovery.constprop.0+0x82/0x180\n ublk_ctrl_uring_cmd+0x4f7/0x6c0\n ? pick_next_task_idle+0x26/0x40\n io_uring_cmd+0x9a/0x1b0\n io_issue_sqe+0x193/0x3f0\n io_wq_submit_work+0x9b/0x390\n io_worker_handle_work+0x165/0x360\n io_wq_worker+0xcb/0x2f0\n ? finish_task_switch.isra.0+0x203/0x290\n ? finish_task_switch.isra.0+0x203/0x290\n ? __pfx_io_wq_worker+0x10/0x10\n ret_from_fork+0x2d/0x50\n ? __pfx_io_wq_worker+0x10/0x10\n ret_from_fork_asm+0x1a/0x30\n </TASK>"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ublk_drv: se corrige la desreferencia de puntero NULL en ublk_ctrl_start_recovery() Cuando se env\u00edan dos comandos UBLK_CMD_START_USER_RECOVERY, el primero establece 'ubq-&gt;ubq_daemon' en NULL, y el segundo activa WARN en ublk_queue_reinit() y posteriormente un problema de desreferencia de puntero NULL. Arr\u00e9glelo agregando la comprobaci\u00f3n en ublk_ctrl_start_recovery() y regrese inmediatamente en caso de cero 'ub-&gt;nr_queues_ready'. ERROR: desreferencia de puntero NULL del kernel, direcci\u00f3n: 0000000000000028 RIP: 0010:ublk_ctrl_start_recovery.constprop.0+0x82/0x180 Call Trace: ? __die+0x20/0x70 ? page_fault_oops+0x75/0x170 ? exc_page_fault+0x64/0x140 ? asm_exc_page_fault+0x22/0x30 ? ublk_ctrl_start_recovery.constprop.0+0x82/0x180 ublk_ctrl_uring_cmd+0x4f7/0x6c0 ? pick_next_task_idle+0x26/0x40 io_uring_cmd+0x9a/0x1b0 io_issue_sqe+0x193/0x3f0 io_wq_submit_work+0x9b/0x390 io_worker_handle_work+0x165/0x360 io_wq_worker+0xcb/0x2f0 ? finish_task_switch.isra.0+0x203/0x290 ? finish_task_switch.isra.0+0x203/0x290 ? __pfx_io_wq_worker+0x10/0x10 ret_from_fork+0x2d/0x50 ? __pfx_io_wq_worker+0x10/0x10 ret_from_fork_asm+0x1a/0x30 "}], "id": "CVE-2024-46735", "lastModified": "2024-09-20T18:35:53.967", "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": "2024-09-18T08:15:03.057", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/136a29d8112df4ea0a57f9602ddf3579e04089dc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7c890ef60bf417d3fe5c6f7a9f6cef0e1d77f74f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ca249435893dda766f3845c15ca77ca5672022d8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e58f5142f88320a5b1449f96a146f2f24615c5c7"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ublk_drv: fix NULL pointer dereference in ublk_ctrl_start_recovery()", "id": "2313083", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2313083"}, "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:\nublk_drv: fix NULL pointer dereference in ublk_ctrl_start_recovery()\nWhen two UBLK_CMD_START_USER_RECOVERY commands are submitted, the\nfirst one sets 'ubq->ubq_daemon' to NULL, and the second one triggers\nWARN in ublk_queue_reinit() and subsequently a NULL pointer dereference\nissue.\nFix it by adding the check in ublk_ctrl_start_recovery() and return\nimmediately in case of zero 'ub->nr_queues_ready'.\nBUG: kernel NULL pointer dereference, address: 0000000000000028\nRIP: 0010:ublk_ctrl_start_recovery.constprop.0+0x82/0x180\nCall Trace:\n<TASK>\n? __die+0x20/0x70\n? page_fault_oops+0x75/0x170\n? exc_page_fault+0x64/0x140\n? asm_exc_page_fault+0x22/0x30\n? ublk_ctrl_start_recovery.constprop.0+0x82/0x180\nublk_ctrl_uring_cmd+0x4f7/0x6c0\n? pick_next_task_idle+0x26/0x40\nio_uring_cmd+0x9a/0x1b0\nio_issue_sqe+0x193/0x3f0\nio_wq_submit_work+0x9b/0x390\nio_worker_handle_work+0x165/0x360\nio_wq_worker+0xcb/0x2f0\n? finish_task_switch.isra.0+0x203/0x290\n? finish_task_switch.isra.0+0x203/0x290\n? __pfx_io_wq_worker+0x10/0x10\nret_from_fork+0x2d/0x50\n? __pfx_io_wq_worker+0x10/0x10\nret_from_fork_asm+0x1a/0x30\n</TASK>"], "name": "CVE-2024-46735", "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": "2024-09-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-46735\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-46735\nhttps://lore.kernel.org/linux-cve-announce/2024091832-CVE-2024-46735-fbce@gregkh/T"], "threat_severity": "Low"}