264 lines
14 KiB
JSON
264 lines
14 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2025-40087",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2025-04-16T07:20:57.162Z",
|
|
"datePublished": "2025-10-30T09:47:56.675Z",
|
|
"dateUpdated": "2026-08-05T12:07:40.146Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-05T12:07:40.146Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: Define a proc_layoutcommit for the FlexFiles layout type\n\nAvoid a crash if a pNFS client should happen to send a LAYOUTCOMMIT\noperation on a FlexFiles layout."
|
|
}
|
|
],
|
|
"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 vulnerable code is in the in-kernel NFS server (nfsd), reached by processing an NFSv4.1 LAYOUTCOMMIT operation received in a COMPOUND RPC from a remote client over TCP port 2049. No local access to the server is required.\nAC:L - Triggering is fully deterministic — the attacker simply issues LAYOUTGET followed by LAYOUTCOMMIT with lc_layout_type=LAYOUT_FLEX_FILES, and the unconditional call through the NULL ops->proc_layoutcommit fires every time; there is no race, timing window, or memory-layout dependency.\nPR:N - With the default AUTH_SYS flavor nfsd performs no credential verification — the client asserts its own uid, and NFSD_MAY_OWNER_OVERRIDE in the fh_verify() check is satisfied by simply claiming the file owner's uid. Any host permitted to reach the export can drive the whole sequence without possessing credentials on the server.\nUI:N - The attacker performs the mount, session setup, LAYOUTGET and LAYOUTCOMMIT entirely on their own; no action by any user or administrator on the NFS server is needed once the export is online.\nS:U - The crash occurs in the nfsd kernel thread within the same security authority as the affected kernel; no VM, IOMMU, or sandbox boundary is crossed.\nC:N - The defect is a call through a NULL function pointer, not a read of out-of-bounds or freed memory; no kernel data or pointer values are disclosed to the remote client.\nI:N - No memory is written and no control-flow hijack is achievable — the target address is 0, which cannot be mapped by a remote attacker, so no file or kernel data is modified.\nA:H - The NULL dereference produces a kernel oops that kills the nfsd service thread (full panic when panic_on_oops is set) and leaks the export/stateid references held by nfsd4_layoutcommit(), rendering the NFS server unavailable; it can be re-triggered at will."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"fs/nfsd/flexfilelayout.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "9b9960a0ca4773e21c4b153ed355583946346b25",
|
|
"lessThan": "a75994dd879401c3e24ff51c2536559f1a53ea27",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "9b9960a0ca4773e21c4b153ed355583946346b25",
|
|
"lessThan": "34d187e020cbda112a6c6f094f0ca5e6a8672b75",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "9b9960a0ca4773e21c4b153ed355583946346b25",
|
|
"lessThan": "ba88a53d7f5df4191583abf214214efe0cda91d2",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "9b9960a0ca4773e21c4b153ed355583946346b25",
|
|
"lessThan": "da9129ef77786839a3ccd1d7afeeab790bceaa1d",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "9b9960a0ca4773e21c4b153ed355583946346b25",
|
|
"lessThan": "f7353208c91ab004e0179c5fb6c365b0f132f9f0",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "9b9960a0ca4773e21c4b153ed355583946346b25",
|
|
"lessThan": "a156af6a4dc38c2aa7c98e89520a70fb3b3e7df4",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "9b9960a0ca4773e21c4b153ed355583946346b25",
|
|
"lessThan": "785ec512afa80d0540f2ca797c0e56de747a6083",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "9b9960a0ca4773e21c4b153ed355583946346b25",
|
|
"lessThan": "4b47a8601b71ad98833b447d465592d847b4dc77",
|
|
"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/nfsd/flexfilelayout.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "4.8",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "4.8",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.4.301",
|
|
"lessThanOrEqual": "5.4.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.10.246",
|
|
"lessThanOrEqual": "5.10.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.15.196",
|
|
"lessThanOrEqual": "5.15.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.1.158",
|
|
"lessThanOrEqual": "6.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.114",
|
|
"lessThanOrEqual": "6.6.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.12.55",
|
|
"lessThanOrEqual": "6.12.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.17.5",
|
|
"lessThanOrEqual": "6.17.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.18",
|
|
"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": "4.8",
|
|
"versionEndExcluding": "5.4.301"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.8",
|
|
"versionEndExcluding": "5.10.246"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.8",
|
|
"versionEndExcluding": "5.15.196"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.8",
|
|
"versionEndExcluding": "6.1.158"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.8",
|
|
"versionEndExcluding": "6.6.114"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.8",
|
|
"versionEndExcluding": "6.12.55"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.8",
|
|
"versionEndExcluding": "6.17.5"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.8",
|
|
"versionEndExcluding": "6.18"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/a75994dd879401c3e24ff51c2536559f1a53ea27"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/34d187e020cbda112a6c6f094f0ca5e6a8672b75"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/ba88a53d7f5df4191583abf214214efe0cda91d2"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/da9129ef77786839a3ccd1d7afeeab790bceaa1d"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/f7353208c91ab004e0179c5fb6c365b0f132f9f0"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/a156af6a4dc38c2aa7c98e89520a70fb3b3e7df4"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/785ec512afa80d0540f2ca797c0e56de747a6083"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/4b47a8601b71ad98833b447d465592d847b4dc77"
|
|
}
|
|
],
|
|
"title": "NFSD: Define a proc_layoutcommit for the FlexFiles layout type",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
}
|
|
}
|
|
} |