{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-41149", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-01-11T12:33:33.672Z", "datePublished": "2025-01-11T12:35:33.428Z", "dateUpdated": "2026-08-05T11:35:22.867Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:35:22.867Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: avoid to reuse `hctx` not removed from cpuhp callback list\n\nIf the 'hctx' isn't removed from cpuhp callback list, we can't reuse it,\notherwise use-after-free may be triggered." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable path is generic block-layer hw-queue reallocation reached through local interfaces — sysfs queue reconfiguration, block ioctls/netlink, device reset, and suspend/resume — with no network-facing parser involved. Even the nvme-oF reconnect angle requires an already-established local block device, so the attack is local.\nAC:L - The reuse of a still-cpuhp-registered hctx is deterministic on any nr_hw_queues update, and the conditions that turn it into a free (allocation failure in blk_mq_init_hctx) or a concurrent callback are attacker-influenceable via memory pressure and repeated queue reconfiguration. Both sides of the race/window are driven by the attacker's own repeated operations.\nPR:L - An unprivileged local user can drive the queue-reallocation path indirectly — inducing NVMe controller resets through I/O timeouts and via logind-permitted suspend/resume (which also mass-offlines/onlines CPUs, walking the corrupted lists) — while supplying the memory pressure needed for the failing-init free. No root-only capability is strictly required for the influencing conditions.\nUI:N - No victim action is needed; the attacker triggers queue reallocation and the subsequent hotplug/list operations entirely through its own activity.\nS:U - The corruption is confined to kernel heap and kernel-global cpuhp instance lists within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The dangling hlist node lets an attacker reallocate the freed blk_mq_hw_ctx slab object and have the kernel traverse attacker-controlled list pointers and dereference hctx->queue in blk_mq_hctx_notify_dead(), yielding an arbitrary kernel-memory read primitive.\nI:H - hlist_add_head() writes a kernel pointer into the freed object and hlist_del() through a reallocated node is a write-what-where; the callback path additionally reaches q->mq_ops indirect calls from freed memory, enabling control-flow hijack and privilege escalation.\nA:H - A use-after-free on globally traversed cpuhp instance lists reliably produces list corruption, oopses, and kernel panics on the next CPU hotplug transition or block-queue setup/teardown." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "block/blk-mq.c" ], "versions": [ { "version": "58bf93580fec30d84a46be41171c5fad98b5cc70", "lessThan": "ee18012c80155f6809522804099621070c69ec72", "status": "affected", "versionType": "git" }, { "version": "c1291ea131d186296dc8d328a36c3caf38e8e159", "lessThan": "b5792c162dcf6197bf3d2de2be6c8169435b73d0", "status": "affected", "versionType": "git" }, { "version": "22465bbac53c821319089016f268a2437de9b00a", "lessThan": "85672ca9ceeaa1dcf2777a7048af5f4aee3fd02b", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "block/blk-mq.c" ], "versions": [ { "version": "6.12.6", "lessThan": "6.12.7", "status": "affected", "versionType": "semver" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.6", "versionEndExcluding": "6.12.7" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/ee18012c80155f6809522804099621070c69ec72" }, { "url": "https://git.kernel.org/stable/c/b5792c162dcf6197bf3d2de2be6c8169435b73d0" }, { "url": "https://git.kernel.org/stable/c/85672ca9ceeaa1dcf2777a7048af5f4aee3fd02b" } ], "title": "block: avoid to reuse `hctx` not removed from cpuhp callback list", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-41149", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2025-02-11T15:41:11.000102Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-11T15:45:20.309Z" } } ] } }