CVE-2026-53392 (GCVE-0-2026-53392)
Vulnerability from cvelistv5 – Published: 2026-07-19 12:01 – Updated: 2026-08-17 04:50
VLAI
EPSS
VEX
Title
NFSv4/flexfiles: reject zero filehandle version count
Summary
In the Linux kernel, the following vulnerability has been resolved:
NFSv4/flexfiles: reject zero filehandle version count
ff_layout_alloc_lseg() decodes the filehandle-version array count
from the flexfiles layout body. The value is used as the count for
kzalloc_objs(), and the current code only rejects NULL.
A zero count yields ZERO_SIZE_PTR, which can be stored in
dss_info->fh_versions even though later flexfiles paths assume that at
least one filehandle version exists.
Reject fh_count == 0 before the allocation, matching the existing zero
version_count validation in the flexfiles GETDEVICEINFO parser.
A QEMU/KASAN run with a malformed flexfiles layout hit:
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
RIP: 0010:ff_layout_encode_ff_layoutupdate.isra.0+0x15f/0x750
ff_layout_encode_layoutreturn+0x683/0x970
nfs4_xdr_enc_layoutreturn+0x278/0x3a0
Kernel panic - not syncing: Fatal exception
The patched kernel rejects the malformed layout without KASAN/oops/panic,
and a valid fh_count=1 regression still opens, reads, and unmounts cleanly.
Severity
7.5 (High)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
d67ae825a59d639e4d8b82413af84d854617a87e , < 9033591535c066726f5b505126ccb4068b98fa4f
(git)
Affected: d67ae825a59d639e4d8b82413af84d854617a87e , < 18cc6d57a14fa65ab2a2b52279f549041c4bc9cf (git) Affected: d67ae825a59d639e4d8b82413af84d854617a87e , < be7829715e341b42846437dd9e721005db59f0cc (git) Affected: d67ae825a59d639e4d8b82413af84d854617a87e , < eeabb9020721db6bc132e68eeae380b8d4fb4b04 (git) Affected: d67ae825a59d639e4d8b82413af84d854617a87e , < 7779c85028a0676fb190cde4f0c540f4f8e97761 (git) Affected: d67ae825a59d639e4d8b82413af84d854617a87e , < d8c90c7cc061265d5f2813a1f5c82ef2f4707e67 (git) Affected: d67ae825a59d639e4d8b82413af84d854617a87e , < 2131ed64b767ffa8bcdb3677d90f3964e39aabc8 (git) Affected: d67ae825a59d639e4d8b82413af84d854617a87e , < 2c6bb3c40bc24f6aa8dfbe6fe98c3ad6389203f2 (git) |
guessed | |
| Linux | Linux |
Affected:
4.0
Unaffected: 0 , < 4.0 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.38 , ≤ 6.18.* (semver) Unaffected: 7.1.3 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/nfs/flexfilelayout/flexfilelayout.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "9033591535c066726f5b505126ccb4068b98fa4f",
"status": "affected",
"version": "d67ae825a59d639e4d8b82413af84d854617a87e",
"versionType": "git"
},
{
"lessThan": "18cc6d57a14fa65ab2a2b52279f549041c4bc9cf",
"status": "affected",
"version": "d67ae825a59d639e4d8b82413af84d854617a87e",
"versionType": "git"
},
{
"lessThan": "be7829715e341b42846437dd9e721005db59f0cc",
"status": "affected",
"version": "d67ae825a59d639e4d8b82413af84d854617a87e",
"versionType": "git"
},
{
"lessThan": "eeabb9020721db6bc132e68eeae380b8d4fb4b04",
"status": "affected",
"version": "d67ae825a59d639e4d8b82413af84d854617a87e",
"versionType": "git"
},
{
"lessThan": "7779c85028a0676fb190cde4f0c540f4f8e97761",
"status": "affected",
"version": "d67ae825a59d639e4d8b82413af84d854617a87e",
"versionType": "git"
},
{
"lessThan": "d8c90c7cc061265d5f2813a1f5c82ef2f4707e67",
"status": "affected",
"version": "d67ae825a59d639e4d8b82413af84d854617a87e",
"versionType": "git"
},
{
"lessThan": "2131ed64b767ffa8bcdb3677d90f3964e39aabc8",
"status": "affected",
"version": "d67ae825a59d639e4d8b82413af84d854617a87e",
"versionType": "git"
},
{
"lessThan": "2c6bb3c40bc24f6aa8dfbe6fe98c3ad6389203f2",
"status": "affected",
"version": "d67ae825a59d639e4d8b82413af84d854617a87e",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/nfs/flexfilelayout/flexfilelayout.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.0"
},
{
"lessThan": "4.0",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.261",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.96",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.38",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.261",
"versionStartIncluding": "4.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.212",
"versionStartIncluding": "4.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.178",
"versionStartIncluding": "4.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.145",
"versionStartIncluding": "4.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.96",
"versionStartIncluding": "4.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.38",
"versionStartIncluding": "4.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1.3",
"versionStartIncluding": "4.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2",
"versionStartIncluding": "4.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4/flexfiles: reject zero filehandle version count\n\nff_layout_alloc_lseg() decodes the filehandle-version array count\nfrom the flexfiles layout body. The value is used as the count for\nkzalloc_objs(), and the current code only rejects NULL.\n\nA zero count yields ZERO_SIZE_PTR, which can be stored in\ndss_info-\u003efh_versions even though later flexfiles paths assume that at\nleast one filehandle version exists.\n\nReject fh_count == 0 before the allocation, matching the existing zero\nversion_count validation in the flexfiles GETDEVICEINFO parser.\n\nA QEMU/KASAN run with a malformed flexfiles layout hit:\n\n KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]\n RIP: 0010:ff_layout_encode_ff_layoutupdate.isra.0+0x15f/0x750\n ff_layout_encode_layoutreturn+0x683/0x970\n nfs4_xdr_enc_layoutreturn+0x278/0x3a0\n Kernel panic - not syncing: Fatal exception\n\nThe patched kernel rejects the malformed layout without KASAN/oops/panic,\nand a valid fh_count=1 regression still opens, reads, and unmounts cleanly."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - The bug is in the NFSv4 pNFS flexfiles client parsing a malicious LAYOUTGET layout blob from the server over NFS/RPC; a remote attacker who controls or MITMs the NFS server delivers the crafted fh_count=0 response over the network.\nAC:L - Once a client is using flexfiles pNFS, the attacker fully controls the layout XDR and can set fh_count=0 to deterministically store ZERO_SIZE_PTR; a later I/O, layoutstats, or LAYOUTRETURN path dereferences fh_versions[0] and panics without races or special heap layout.\nPR:N - Exploitation requires no privileges on the victim host; the attacker only needs to be the (or impersonate) the NFS server sending protocol responses after normal client connection/authentication.\nUI:N - After an NFS pNFS flexfiles mount is established (common in enterprise/HPC NAS deployments), triggering the malformed layout and subsequent kernel panic requires no further victim action beyond routine file access on the already-mounted share.\nS:U - Impact is a kernel oops/panic on the NFS client host; it does not cross a VM, container, or IOMMU security boundary to affect a different authority.\nC:N - The failure mode is a NULL-pointer dereference at ZERO_SIZE_PTR (0x10) when accessing fh_versions[0]; KASAN confirms a faulting dereference with no successful out-of-bounds read or information leak to userspace.\nI:N - There is no memory corruption or successful write primitive\u2014only an invalid-pointer dereference that crashes the kernel before any integrity-changing operation completes.\nA:H - A confirmed KASAN null-ptr-deref in ff_layout_encode_ff_layoutupdate during LAYOUTRETURN encoding causes a fatal kernel exception/panic, fully denying availability of the client system."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T04:50:43.747Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/9033591535c066726f5b505126ccb4068b98fa4f"
},
{
"url": "https://git.kernel.org/stable/c/18cc6d57a14fa65ab2a2b52279f549041c4bc9cf"
},
{
"url": "https://git.kernel.org/stable/c/be7829715e341b42846437dd9e721005db59f0cc"
},
{
"url": "https://git.kernel.org/stable/c/eeabb9020721db6bc132e68eeae380b8d4fb4b04"
},
{
"url": "https://git.kernel.org/stable/c/7779c85028a0676fb190cde4f0c540f4f8e97761"
},
{
"url": "https://git.kernel.org/stable/c/d8c90c7cc061265d5f2813a1f5c82ef2f4707e67"
},
{
"url": "https://git.kernel.org/stable/c/2131ed64b767ffa8bcdb3677d90f3964e39aabc8"
},
{
"url": "https://git.kernel.org/stable/c/2c6bb3c40bc24f6aa8dfbe6fe98c3ad6389203f2"
}
],
"title": "NFSv4/flexfiles: reject zero filehandle version count",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-53392",
"datePublished": "2026-07-19T12:01:56.101Z",
"dateReserved": "2026-06-09T07:44:35.402Z",
"dateUpdated": "2026-08-17T04:50:43.747Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-53392",
"date": "2026-09-22",
"epss": "0.00529",
"percentile": "0.43702"
},
"microsoft_vex": {
"current_release_date": "2026-08-13T00:16:20.000Z",
"cve": "CVE-2026-53392",
"id": "msrc_CVE-2026-53392",
"initial_release_date": "2026-07-20T01:02:33.000Z",
"product_status:fixed": "1",
"product_status:known_affected": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "NFSv4/flexfiles: reject zero filehandle version count",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-53392.json",
"version": "3"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/nfs/flexfilelayout/flexfilelayout.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "9033591535c066726f5b505126ccb4068b98fa4f",
"status": "affected",
"version": "d67ae825a59d639e4d8b82413af84d854617a87e",
"versionType": "git"
},
{
"lessThan": "18cc6d57a14fa65ab2a2b52279f549041c4bc9cf",
"status": "affected",
"version": "d67ae825a59d639e4d8b82413af84d854617a87e",
"versionType": "git"
},
{
"lessThan": "be7829715e341b42846437dd9e721005db59f0cc",
"status": "affected",
"version": "d67ae825a59d639e4d8b82413af84d854617a87e",
"versionType": "git"
},
{
"lessThan": "eeabb9020721db6bc132e68eeae380b8d4fb4b04",
"status": "affected",
"version": "d67ae825a59d639e4d8b82413af84d854617a87e",
"versionType": "git"
},
{
"lessThan": "7779c85028a0676fb190cde4f0c540f4f8e97761",
"status": "affected",
"version": "d67ae825a59d639e4d8b82413af84d854617a87e",
"versionType": "git"
},
{
"lessThan": "d8c90c7cc061265d5f2813a1f5c82ef2f4707e67",
"status": "affected",
"version": "d67ae825a59d639e4d8b82413af84d854617a87e",
"versionType": "git"
},
{
"lessThan": "2131ed64b767ffa8bcdb3677d90f3964e39aabc8",
"status": "affected",
"version": "d67ae825a59d639e4d8b82413af84d854617a87e",
"versionType": "git"
},
{
"lessThan": "2c6bb3c40bc24f6aa8dfbe6fe98c3ad6389203f2",
"status": "affected",
"version": "d67ae825a59d639e4d8b82413af84d854617a87e",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/nfs/flexfilelayout/flexfilelayout.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.0"
},
{
"lessThan": "4.0",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.261",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.96",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.38",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "BA4765C4-66A3-4552-91A6-D45CE0E7FD5C",
"versionEndExcluding": "5.10.261",
"versionStartIncluding": "4.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "8E99FB01-CD93-41AF-A653-3F450652B9A6",
"versionEndExcluding": "5.15.212",
"versionStartIncluding": "5.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "092233C7-F4E0-40C8-BD4D-A28FE50DFE20",
"versionEndExcluding": "6.1.178",
"versionStartIncluding": "5.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "7046B092-F810-4440-ACE6-60218518EECE",
"versionEndExcluding": "6.6.145",
"versionStartIncluding": "6.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "38A8100E-2B1A-462F-AEE9-8901B870FEF2",
"versionEndExcluding": "6.12.96",
"versionStartIncluding": "6.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "FA591B28-5D62-449E-BDBE-3C9391BF070A",
"versionEndExcluding": "6.18.38",
"versionStartIncluding": "6.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "9526B150-E2B3-4C6F-8AE5-1AF92B75AD9E",
"versionEndExcluding": "7.1.3",
"versionStartIncluding": "6.19",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4/flexfiles: reject zero filehandle version count\n\nff_layout_alloc_lseg() decodes the filehandle-version array count\nfrom the flexfiles layout body. The value is used as the count for\nkzalloc_objs(), and the current code only rejects NULL.\n\nA zero count yields ZERO_SIZE_PTR, which can be stored in\ndss_info-\u003efh_versions even though later flexfiles paths assume that at\nleast one filehandle version exists.\n\nReject fh_count == 0 before the allocation, matching the existing zero\nversion_count validation in the flexfiles GETDEVICEINFO parser.\n\nA QEMU/KASAN run with a malformed flexfiles layout hit:\n\n KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]\n RIP: 0010:ff_layout_encode_ff_layoutupdate.isra.0+0x15f/0x750\n ff_layout_encode_layoutreturn+0x683/0x970\n nfs4_xdr_enc_layoutreturn+0x278/0x3a0\n Kernel panic - not syncing: Fatal exception\n\nThe patched kernel rejects the malformed layout without KASAN/oops/panic,\nand a valid fh_count=1 regression still opens, reads, and unmounts cleanly."
}
],
"id": "CVE-2026-53392",
"lastModified": "2026-08-17T05:17:13.610",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
]
},
"published": "2026-07-19T12:16:50.260",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/18cc6d57a14fa65ab2a2b52279f549041c4bc9cf"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/2131ed64b767ffa8bcdb3677d90f3964e39aabc8"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/2c6bb3c40bc24f6aa8dfbe6fe98c3ad6389203f2"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/7779c85028a0676fb190cde4f0c540f4f8e97761"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/9033591535c066726f5b505126ccb4068b98fa4f"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/be7829715e341b42846437dd9e721005db59f0cc"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/d8c90c7cc061265d5f2813a1f5c82ef2f4707e67"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/eeabb9020721db6bc132e68eeae380b8d4fb4b04"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-476"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-09-04T08:03:20+00:00",
"cve": "CVE-2026-53392",
"id": "CVE-2026-53392",
"initial_release_date": "2026-07-19T00:00:00+00:00",
"product_status:fixed": "762",
"product_status:known_affected": "50",
"product_status:known_not_affected": "14",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: NFSv4/flexfiles: reject zero filehandle version count",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53392.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-16T00:10:40Z",
"cve": "CVE-2026-53392",
"id": "CVE-2026-53392",
"initial_release_date": "2026-07-19T17:36:04Z",
"product_status:first_fixed": "2",
"product_status:known_affected": "646",
"product_status:known_not_affected": "4",
"product_status:recommended": "380",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-53392",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-53392.json",
"version": "21"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…