{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-50119", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.948Z", "datePublished": "2024-11-05T17:10:49.261Z", "dateUpdated": "2026-08-05T11:41:47.758Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:41:47.758Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix warning when destroy 'cifs_io_request_pool'\n\nThere's a issue as follows:\nWARNING: CPU: 1 PID: 27826 at mm/slub.c:4698 free_large_kmalloc+0xac/0xe0\nRIP: 0010:free_large_kmalloc+0xac/0xe0\nCall Trace:\n \n ? __warn+0xea/0x330\n mempool_destroy+0x13f/0x1d0\n init_cifs+0xa50/0xff0 [cifs]\n do_one_initcall+0xdc/0x550\n do_init_module+0x22d/0x6b0\n load_module+0x4e96/0x5ff0\n init_module_from_file+0xcd/0x130\n idempotent_init_module+0x330/0x620\n __x64_sys_finit_module+0xb3/0x110\n do_syscall_64+0xc1/0x1d0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nObviously, 'cifs_io_request_pool' is not created by mempool_create().\nSo just use mempool_exit() to revert 'cifs_io_request_pool'." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable code runs only during cifs module initialization, reached via a local `finit_module()` or via local filesystem-autoload triggered by a `mount -t cifs` / `fsopen(\"cifs\")` syscall. No remote peer data is involved.\nAC:H - The buggy `mempool_destroy()` is only reached when `kmem_cache_create(\"cifs_io_subrequest\")` or the subrequest mempool init fails while the preceding cifs_io_request allocations succeeded; the attacker can create memory/percpu pressure and retry the autoload repeatedly, but cannot force that specific one-shot init allocation to fail at will.\nPR:L - `__request_module()` contains no capability check, and `do_new_mount()` calls `get_fs_type()` (triggering `request_module(\"fs-cifs\")`) before any `FS_USERNS_MOUNT` check, gated only by `may_mount()` = `ns_capable(CAP_SYS_ADMIN)` — satisfiable by an unprivileged user via `unshare -Urm`, so no real root is needed.\nUI:N - The attacker drives the module load and the memory-pressure conditions entirely from their own process; no action by any other user is required.\nS:U - The corruption is confined to kernel memory managed by the same security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - `folio_put()` on the bogus folio can drop an unrelated live page's refcount to zero, returning a still-in-use page to the allocator; reallocation of that page exposes its residual contents, giving an arbitrary-read-class disclosure primitive.\nI:H - The stray `folio_put()` and `lruvec_stat_mod_folio()` corrupt refcounts and accounting of memory the kernel never allocated here; a page freed while still mapped is a page-level use-after-free, the classic basis for page-table spraying and privilege escalation.\nA:H - The path unconditionally hits `WARN_ON_ONCE` in `free_large_kmalloc()` (a panic on `panic_on_warn` systems), and the resulting page-refcount corruption leads to oopses or a panic once the wrongly-freed page is reused." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/smb/client/cifsfs.c" ], "versions": [ { "version": "edea94a69730b74a8867bbafe742c3fc4e580722", "lessThan": "726416a253c51037636ecc65ad3dada3d02dcaea", "status": "affected", "versionType": "git" }, { "version": "edea94a69730b74a8867bbafe742c3fc4e580722", "lessThan": "2ce1007f42b8a6a0814386cb056feb28dc6d6091", "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/smb/client/cifsfs.c" ], "versions": [ { "version": "6.10", "status": "affected" }, { "version": "0", "lessThan": "6.10", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.6", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12", "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": "6.10", "versionEndExcluding": "6.11.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/726416a253c51037636ecc65ad3dada3d02dcaea" }, { "url": "https://git.kernel.org/stable/c/2ce1007f42b8a6a0814386cb056feb28dc6d6091" } ], "title": "cifs: fix warning when destroy 'cifs_io_request_pool'", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-50119", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2025-10-01T20:21:43.395219Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "description": "CWE-noinfo Not enough information" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T20:27:16.497Z" } } ] } }