KVM: SVM: Use the active VMCB's MSR bitmap when checking if MSR is intercepted
In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Use the active VMCB's MSR bitmap when checking if MSR is intercepted Use the MSR permission bitmap of the active VMCB instead of assuming that KVM is always using vmcb02's bitmap when L2 is active, as KVM uses msrpm02 if and only if L1 wants to intercept MSR accesses, i.e. if and only if KVM needs to merge msprm01 with msrpm12. Don't bother tracking the virtual address of the bitmap that's being used, as __va() is cheap on x86, and caching the virtual address would introduce yet another source of potentially stale information.
CVE-2026-98716
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-2026-98716
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": "b2ac58f90540e39324e7a29a7ad471407ae0bf48",
"lessThan": "84da7a0e92207444d9cbfe69965e17db29008f27",
"versionType": "git"
},
{
"status": "affected",
"version": "b2ac58f90540e39324e7a29a7ad471407ae0bf48",
"lessThan": "74836ae4785b9754bb36d0b18fcc1dec4e5e98d2",
"versionType": "git"
},
{
"status": "affected",
"version": "b2ac58f90540e39324e7a29a7ad471407ae0bf48",
"lessThan": "318ef696fa3c712e46bb62a1a828c3cd62f390c3",
"versionType": "git"
},
{
"status": "affected",
"version": "b2ac58f90540e39324e7a29a7ad471407ae0bf48",
"lessThan": "55865b3ae03705aa39198783b9cb1f8b96eb44e4",
"versionType": "git"
},
{
"status": "affected",
"version": "b2ac58f90540e39324e7a29a7ad471407ae0bf48",
"lessThan": "9e06bbb9ade7cdf28d4a3b5b14e5812881c8df85",
"versionType": "git"
},
{
"status": "affected",
"version": "f54d0bb8487d2f016fbc4f0e38ef9098f8eb8bd4",
"versionType": "git"
},
{
"status": "affected",
"version": "89be8950bab799ddb9cc3777345e3c21bcb32dba",
"versionType": "git"
},
{
"status": "affected",
"version": "3.16.57",
"lessThan": "3.17",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.4.168",
"lessThan": "4.5",
"versionType": "semver"
}
],
"programFiles": [
"arch/x86/kvm/svm/svm.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.16"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.16",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.56",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.10",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"arch/x86/kvm/svm/svm.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98716
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48925 · Revision 1
- Added to Heist Feed
- Publisher date