KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation walk_s1() and kvm_walk_nested_s2() expect to be called while holding kvm->srcu to guard against memslot changes. While this is generally the case, __kvm_at_s12() and __kvm_find_s1_desc_level() call into the respective walkers without taking kvm->srcu. Fix by acquiring kvm->srcu prior to the table walk in both instances.
CVE-2026-53277
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-53277
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "be04cebf3e78874627dc1042991d5d504464a5cc",
"lessThan": "0648b375aa951cc15d9e90f9ac4de71e0b51fa45",
"versionType": "git"
},
{
"status": "affected",
"version": "be04cebf3e78874627dc1042991d5d504464a5cc",
"lessThan": "97706097f9b851cfe55c3b00b083dfc2bcf542bc",
"versionType": "git"
},
{
"status": "affected",
"version": "be04cebf3e78874627dc1042991d5d504464a5cc",
"lessThan": "ec42b4ed1b072ea2d03f086061aa67bad6d8de39",
"versionType": "git"
},
{
"status": "affected",
"version": "be04cebf3e78874627dc1042991d5d504464a5cc",
"lessThan": "f2ca45b50d4216c9cc7ffabf50d9ad1932209251",
"versionType": "git"
}
],
"programFiles": [
"arch/arm64/kvm/at.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.12"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.12",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.36",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.13",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"arch/arm64/kvm/at.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-53277
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #46384 · Revision 1
- Added to Heist Feed
- Publisher date