CVE-2025-40010 (GCVE-0-2025-40010)
Vulnerability from cvelistv5 – Published: 2025-10-20 15:26 – Updated: 2026-05-11 21:40
VLAI
EPSS
VEX
Title
afs: Fix potential null pointer dereference in afs_put_server
Summary
In the Linux kernel, the following vulnerability has been resolved:
afs: Fix potential null pointer dereference in afs_put_server
afs_put_server() accessed server->debug_id before the NULL check, which
could lead to a null pointer dereference. Move the debug_id assignment,
ensuring we never dereference a NULL server pointer.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
2757a4dc184997c66ef1de32636f73b9f21aac14 , < 7b8381f3c405b864a814d747e526e078c3ef4bc2
(git)
Affected: 2757a4dc184997c66ef1de32636f73b9f21aac14 , < cab278cead49a547ac84c3e185f446f381303eae (git) Affected: 2757a4dc184997c66ef1de32636f73b9f21aac14 , < a13dbc5e20c7284b82afe6f08debdecf51d2ca04 (git) Affected: 2757a4dc184997c66ef1de32636f73b9f21aac14 , < 41782c44bb8431c43043129ae42f2ba614938479 (git) Affected: 2757a4dc184997c66ef1de32636f73b9f21aac14 , < 9158c6bb245113d4966df9b2ba602197a379412e (git) |
guessed | |
| Linux | Linux |
Affected:
6.0
Unaffected: 0 , < 6.0 (semver) Unaffected: 6.1.155 , ≤ 6.1.* (semver) Unaffected: 6.6.109 , ≤ 6.6.* (semver) Unaffected: 6.12.50 , ≤ 6.12.* (semver) Unaffected: 6.16.10 , ≤ 6.16.* (semver) Unaffected: 6.17 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
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{
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"product": "Linux",
"programFiles": [
"fs/afs/server.c"
],
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"vendor": "Linux",
"versions": [
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"status": "affected",
"version": "2757a4dc184997c66ef1de32636f73b9f21aac14",
"versionType": "git"
},
{
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"status": "affected",
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"versionType": "git"
},
{
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"versionType": "git"
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{
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{
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"programFiles": [
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],
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"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
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"status": "unaffected",
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},
{
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"status": "unaffected",
"version": "6.6.109",
"versionType": "semver"
},
{
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"version": "6.12.50",
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},
{
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"status": "unaffected",
"version": "6.16.10",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.0",
"vulnerable": true
},
{
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},
{
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"versionEndExcluding": "6.17",
"versionStartIncluding": "6.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nafs: Fix potential null pointer dereference in afs_put_server\n\nafs_put_server() accessed server-\u003edebug_id before the NULL check, which\ncould lead to a null pointer dereference. Move the debug_id assignment,\nensuring we never dereference a NULL server pointer."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T21:40:44.043Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/7b8381f3c405b864a814d747e526e078c3ef4bc2"
},
{
"url": "https://git.kernel.org/stable/c/cab278cead49a547ac84c3e185f446f381303eae"
},
{
"url": "https://git.kernel.org/stable/c/a13dbc5e20c7284b82afe6f08debdecf51d2ca04"
},
{
"url": "https://git.kernel.org/stable/c/41782c44bb8431c43043129ae42f2ba614938479"
},
{
"url": "https://git.kernel.org/stable/c/9158c6bb245113d4966df9b2ba602197a379412e"
}
],
"title": "afs: Fix potential null pointer dereference in afs_put_server",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-40010",
"datePublished": "2025-10-20T15:26:55.874Z",
"dateReserved": "2025-04-16T07:20:57.151Z",
"dateUpdated": "2026-05-11T21:40:44.043Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2025-40010",
"date": "2026-09-19",
"epss": "0.00229",
"percentile": "0.1403"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/afs/server.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"version": "2757a4dc184997c66ef1de32636f73b9f21aac14",
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},
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"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.109",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.50",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.16.*",
"status": "unaffected",
"version": "6.16.10",
"versionType": "semver"
},
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}
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}
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"descriptions": [
{
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nafs: Fix potential null pointer dereference in afs_put_server\n\nafs_put_server() accessed server-\u003edebug_id before the NULL check, which\ncould lead to a null pointer dereference. Move the debug_id assignment,\nensuring we never dereference a NULL server pointer."
}
],
"id": "CVE-2025-40010",
"lastModified": "2026-06-17T09:21:06.930",
"metrics": {},
"published": "2025-10-20T16:15:37.700",
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},
{
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},
{
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{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
}
},
"redhat_vex": {
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"current_release_date": "2026-06-30T10:24:43+00:00",
"cve": "CVE-2025-40010",
"id": "CVE-2025-40010",
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"product_status:known_not_affected": "90",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: afs: Fix potential null pointer dereference in afs_put_server",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40010.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-11T01:56:53Z",
"cve": "CVE-2025-40010",
"id": "CVE-2025-40010",
"initial_release_date": "2025-10-20T23:27:34Z",
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"product_status:recommended": "310",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2025-40010",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-40010.json",
"version": "35"
}
}
}
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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.
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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.
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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.
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