CVE-2025-40266 (GCVE-0-2025-40266)
Vulnerability from cvelistv5
Published
2025-12-04 16:08
Modified
2025-12-04 16:08
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
KVM: arm64: Check the untrusted offset in FF-A memory share
Verify the offset to prevent OOB access in the hypervisor
FF-A buffer in case an untrusted large enough value
[U32_MAX - sizeof(struct ffa_composite_mem_region) + 1, U32_MAX]
is set from the host kernel.
References
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"arch/arm64/kvm/hyp/nvhe/ffa.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"versionType": "git"
},
{
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"status": "affected",
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},
{
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}
]
},
{
"defaultStatus": "affected",
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"programFiles": [
"arch/arm64/kvm/hyp/nvhe/ffa.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"version": "6.6.118",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.12.60",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.17.10",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
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],
"cpeApplicability": [
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}
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"negate": false,
"operator": "OR"
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],
"descriptions": [
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Check the untrusted offset in FF-A memory share\n\nVerify the offset to prevent OOB access in the hypervisor\nFF-A buffer in case an untrusted large enough value\n[U32_MAX - sizeof(struct ffa_composite_mem_region) + 1, U32_MAX]\nis set from the host kernel."
}
],
"providerMetadata": {
"dateUpdated": "2025-12-04T16:08:25.392Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"references": [
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"url": "https://git.kernel.org/stable/c/fc3139d9f4c1fe1c7d5f25f99676bd8e9c6a1041"
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{
"url": "https://git.kernel.org/stable/c/bc1909ef38788f2ee3d8011d70bf029948433051"
},
{
"url": "https://git.kernel.org/stable/c/f9f1aed6c8a3427900da3121e1868124854569c3"
},
{
"url": "https://git.kernel.org/stable/c/103e17aac09cdd358133f9e00998b75d6c1f1518"
}
],
"title": "KVM: arm64: Check the untrusted offset in FF-A memory share",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
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"cveId": "CVE-2025-40266",
"datePublished": "2025-12-04T16:08:25.392Z",
"dateReserved": "2025-04-16T07:20:57.183Z",
"dateUpdated": "2025-12-04T16:08:25.392Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
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}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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