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vuln-cve/data/2024/53xxx/CVE-2024-53136.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2024-53136",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-11-19T17:17:24.996Z",
"datePublished": "2024-12-04T14:20:41.634Z",
"dateUpdated": "2026-08-05T11:44:00.526Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-08-05T11:44:00.526Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: revert \"mm: shmem: fix data-race in shmem_getattr()\"\n\nRevert d949d1d14fa2 (\"mm: shmem: fix data-race in shmem_getattr()\") as\nsuggested by Chuck [1]. It is causing deadlocks when accessing tmpfs over\nNFS.\n\nAs Hugh commented, \"added just to silence a syzbot sanitizer splat: added\nwhere there has never been any practical problem\"."
}
],
"metrics": [
{
"cvssV3_1": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 7.5,
"baseSeverity": "HIGH"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - The deadlock is triggered by nfsd processing NFS RPCs from a remote client over TCP/2049 against a tmpfs export — `nfsd_setattr()`/`nfsd_create()`/`nfsd_unlink()`/`nfsd_rename()` hold `i_rwsem` for write and then call `vfs_getattr()` on the same inode. A remote NFS client issuing a single CREATE or SETATTR hangs the server.\nAC:L - This is a deterministic recursive rwsem acquisition (`down_write` then `down_read` on the same lock by the same task), not a race — every metadata-modifying NFS operation on a tmpfs export deadlocks 100% of the time on the first attempt.\nPR:N - NFSv3/NFSv4 with AUTH_SYS performs no cryptographic authentication — a client permitted by the export simply asserts a UID, so no credentials on the server are required; a world-writable or anon-squashed tmpfs export lets an entirely unauthenticated remote peer reach `fh_fill_pre_attrs()` under the held inode lock.\nUI:N - The attacker sends the NFS request directly; no action by a local user or administrator is needed at exploit time, only the pre-existing tmpfs export configuration.\nS:U - The deadlocked task, the held `i_rwsem`, and all resulting hangs are within the kernel's own security authority; no boundary between security scopes is crossed.\nC:N - The bug is a lock-ordering/recursion deadlock with no out-of-bounds access, no freed-memory reuse, and no data returned to the attacker — nothing is disclosed.\nI:N - No memory corruption or unauthorized modification occurs; the operation simply never completes, so no data is written incorrectly.\nA:H - The nfsd thread blocks unkillably in `TASK_UNINTERRUPTIBLE` while holding the inode's `i_rwsem` forever, wedging every further access to that inode from both NFS clients and local processes and exhausting nfsd threads — a permanent, unrecoverable denial of service requiring a reboot."
}
]
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"mm/shmem.c"
],
"versions": [
{
"version": "9fb9703cd43ee20a6de8ccdef991677b7274cec0",
"lessThan": "36b537e8f302f670c7cf35d88a3a294443e32d52",
"status": "affected",
"versionType": "git"
},
{
"version": "7cc30ada84323be19395094d567579536e0d187e",
"lessThan": "a3c65022d89d5baa2cea8e87a6de983ea305f14c",
"status": "affected",
"versionType": "git"
},
{
"version": "bda1a99a0dd644f31a87d636ac624eeb975cb65a",
"lessThan": "57cc8d253099d1b8627f0fb487ee011d9158ccc9",
"status": "affected",
"versionType": "git"
},
{
"version": "3d9528484480e8f4979b3a347930ed383be99f89",
"lessThan": "d3f9d88c2c03b2646ace336236adca19f7697bd3",
"status": "affected",
"versionType": "git"
},
{
"version": "82cae1e30bd940253593c2d4f16d88343d1358f4",
"lessThan": "5874c1150e77296565ad6e495ef41fbf87570d14",
"status": "affected",
"versionType": "git"
},
{
"version": "edd1f905050686fdc4cfe233d818469fdf7d5ff8",
"lessThan": "64e67e8694252c1bf01b802ee911be3fee62c36b",
"status": "affected",
"versionType": "git"
},
{
"version": "ffd56612566bc23877c8f45def2801f3324a222a",
"lessThan": "901dc2ad7c3789fa87dc3956f6697c5d62d5cf7e",
"status": "affected",
"versionType": "git"
},
{
"version": "d949d1d14fa281ace388b1de978e8f2cd52875cf",
"lessThan": "d1aa0c04294e29883d65eac6c2f72fe95cc7c049",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"mm/shmem.c"
],
"versions": [
{
"version": "4.19.323",
"lessThan": "4.19.325",
"status": "affected",
"versionType": "semver"
},
{
"version": "5.4.285",
"lessThan": "5.4.287",
"status": "affected",
"versionType": "semver"
},
{
"version": "5.10.229",
"lessThan": "5.10.231",
"status": "affected",
"versionType": "semver"
},
{
"version": "5.15.171",
"lessThan": "5.15.174",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.1.116",
"lessThan": "6.1.119",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.6.60",
"lessThan": "6.6.63",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.11.7",
"lessThan": "6.11.10",
"status": "affected",
"versionType": "semver"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.19.323",
"versionEndExcluding": "4.19.325"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.4.285",
"versionEndExcluding": "5.4.287"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10.229",
"versionEndExcluding": "5.10.231"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.15.171",
"versionEndExcluding": "5.15.174"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.1.116",
"versionEndExcluding": "6.1.119"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.6.60",
"versionEndExcluding": "6.6.63"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.11.7",
"versionEndExcluding": "6.11.10"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/36b537e8f302f670c7cf35d88a3a294443e32d52"
},
{
"url": "https://git.kernel.org/stable/c/a3c65022d89d5baa2cea8e87a6de983ea305f14c"
},
{
"url": "https://git.kernel.org/stable/c/57cc8d253099d1b8627f0fb487ee011d9158ccc9"
},
{
"url": "https://git.kernel.org/stable/c/d3f9d88c2c03b2646ace336236adca19f7697bd3"
},
{
"url": "https://git.kernel.org/stable/c/5874c1150e77296565ad6e495ef41fbf87570d14"
},
{
"url": "https://git.kernel.org/stable/c/64e67e8694252c1bf01b802ee911be3fee62c36b"
},
{
"url": "https://git.kernel.org/stable/c/901dc2ad7c3789fa87dc3956f6697c5d62d5cf7e"
},
{
"url": "https://git.kernel.org/stable/c/d1aa0c04294e29883d65eac6c2f72fe95cc7c049"
}
],
"title": "mm: revert \"mm: shmem: fix data-race in shmem_getattr()\"",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"title": "CVE Program Container",
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2025-11-03T22:29:39.267Z"
}
}
]
}
}
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