CVE-2025-40036 (GCVE-0-2025-40036)
Vulnerability from cvelistv5 – Published: 2025-10-28 11:48 – Updated: 2026-05-11 21:41
VLAI
EPSS
VEX
Title
misc: fastrpc: fix possible map leak in fastrpc_put_args
Summary
In the Linux kernel, the following vulnerability has been resolved:
misc: fastrpc: fix possible map leak in fastrpc_put_args
copy_to_user() failure would cause an early return without cleaning up
the fdlist, which has been updated by the DSP. This could lead to map
leak. Fix this by redirecting to a cleanup path on failure, ensuring
that all mapped buffers are properly released before returning.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 , < a085658264d0c8d4f795d4631f77d7289a021de9
(git)
Affected: c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 , < 3ad42dc66445df6977cf4be0c06f1a655299ce6c (git) Affected: c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 , < 78d33a041555db03903e8037fd053ed74fbd88cb (git) Affected: c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 , < c000f65f0ac93d9f9cc69a230d372f6ca93e4879 (git) Affected: c68cfb718c8f97b7f7a50ed66be5feb42d0c8988 , < da1ba64176e0138f2bfa96f9e43e8c3640d01e1e (git) |
guessed | |
| Linux | Linux |
Affected:
5.1
Unaffected: 0 , < 5.1 (semver) Unaffected: 6.1.156 , ≤ 6.1.* (semver) Unaffected: 6.6.112 , ≤ 6.6.* (semver) Unaffected: 6.12.53 , ≤ 6.12.* (semver) Unaffected: 6.17.3 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
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"product": "Linux",
"programFiles": [
"drivers/misc/fastrpc.c"
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},
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{
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"status": "unaffected",
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{
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},
{
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"version": "6.17.3",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.1",
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},
{
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},
{
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"versionStartIncluding": "5.1",
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
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"lang": "en",
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}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T21:41:14.519Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
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"url": "https://git.kernel.org/stable/c/a085658264d0c8d4f795d4631f77d7289a021de9"
},
{
"url": "https://git.kernel.org/stable/c/3ad42dc66445df6977cf4be0c06f1a655299ce6c"
},
{
"url": "https://git.kernel.org/stable/c/78d33a041555db03903e8037fd053ed74fbd88cb"
},
{
"url": "https://git.kernel.org/stable/c/c000f65f0ac93d9f9cc69a230d372f6ca93e4879"
},
{
"url": "https://git.kernel.org/stable/c/da1ba64176e0138f2bfa96f9e43e8c3640d01e1e"
}
],
"title": "misc: fastrpc: fix possible map leak in fastrpc_put_args",
"x_generator": {
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}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-40036",
"datePublished": "2025-10-28T11:48:17.630Z",
"dateReserved": "2025-04-16T07:20:57.153Z",
"dateUpdated": "2026-05-11T21:41:14.519Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2025-40036",
"date": "2026-10-08",
"epss": "0.00216",
"percentile": "0.10971"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
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"product": "Linux",
"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"version": "5.1"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.156",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.112",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.53",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.17.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
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{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: fix possible map leak in fastrpc_put_args\n\ncopy_to_user() failure would cause an early return without cleaning up\nthe fdlist, which has been updated by the DSP. This could lead to map\nleak. Fix this by redirecting to a cleanup path on failure, ensuring\nthat all mapped buffers are properly released before returning."
}
],
"id": "CVE-2025-40036",
"lastModified": "2026-06-17T09:21:09.517",
"metrics": {},
"published": "2025-10-28T12:15:37.487",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/c000f65f0ac93d9f9cc69a230d372f6ca93e4879"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/da1ba64176e0138f2bfa96f9e43e8c3640d01e1e"
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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},
"redhat_vex": {
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"current_release_date": "2026-06-30T10:13:24+00:00",
"cve": "CVE-2025-40036",
"id": "CVE-2025-40036",
"initial_release_date": "2025-10-28T00:00:00+00:00",
"product_status:known_not_affected": "274",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: misc: fastrpc: fix possible map leak in fastrpc_put_args",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40036.json",
"version": "3"
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"cve": "CVE-2025-40036",
"id": "CVE-2025-40036",
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"product_status:known_not_affected": "395",
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"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2025-40036",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-40036.json",
"version": "44"
}
}
}
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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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