CVE-2026-98716
Full vulnerability record from the local CVENow database.
Description
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.
Severity
Not scored
CVSS score
Not available
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-10-18 16:17:25.150000
Last modified
2026-10-30 13:21:20.837000
View original CVE JSON
{
"id": "CVE-2026-98716",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-10-18T16:17:25.150",
"lastModified": "2026-10-30T13:21:20.837",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: SVM: Use the active VMCB's MSR bitmap when checking if MSR is intercepted\n\nUse the MSR permission bitmap of the active VMCB instead of assuming that\nKVM is always using vmcb02's bitmap when L2 is active, as KVM uses msrpm02\nif and only if L1 wants to intercept MSR accesses, i.e. if and only if KVM\nneeds to merge msprm01 with msrpm12.\n\nDon't bother tracking the virtual address of the bitmap that's being used,\nas __va() is cheap on x86, and caching the virtual address would introduce\nyet another source of potentially stale information."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"arch/x86/kvm/svm/svm.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "b2ac58f90540e39324e7a29a7ad471407ae0bf48",
"lessThan": "001c78bc64389cabe4f9015ab3942ec9c3592caa",
"versionType": "git",
"status": "affected"
},
{
"version": "b2ac58f90540e39324e7a29a7ad471407ae0bf48",
"lessThan": "552a110c403f1a61eba0bf71519c6585d9d4242d",
"versionType": "git",
"status": "affected"
},
{
"version": "b2ac58f90540e39324e7a29a7ad471407ae0bf48",
"lessThan": "0e79ebf6f92a7d15187aede44204fa04b93e474c",
"versionType": "git",
"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",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"arch/x86/kvm/svm/svm.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "4.16",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.16",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.10.273",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.224",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.191",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.160",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.113",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.56",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.2.10",
"lessThanOrEqual": "7.2.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.3",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {},
"references": [
{
"url": "https://git.kernel.org/stable/c/001c78bc64389cabe4f9015ab3942ec9c3592caa",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/0e79ebf6f92a7d15187aede44204fa04b93e474c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/318ef696fa3c712e46bb62a1a828c3cd62f390c3",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/552a110c403f1a61eba0bf71519c6585d9d4242d",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/55865b3ae03705aa39198783b9cb1f8b96eb44e4",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/74836ae4785b9754bb36d0b18fcc1dec4e5e98d2",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/84da7a0e92207444d9cbfe69965e17db29008f27",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/9e06bbb9ade7cdf28d4a3b5b14e5812881c8df85",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}