CVE-2026-98716KVM: SVM: Use the active VMCB's MSR bitmap when checking if MSR is intercepted
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 18, 2026
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Linux Linux linux:linux (from the name) | from b2ac58f90540e39324e7a29a7ad471407ae0bf48 before 74836ae4785b9754bb36d0b18fcc1dec4e5e98d2; from b2ac58f90540e39324e7a29a7ad471407ae0bf48 before 318ef696fa3c712e46bb62a1a828c3cd62f390c3; from b2ac58f90540e39324e7a29a7ad471407ae0bf48 before 55865b3ae03705aa39198783b9cb1f8b96eb44e4; from b2ac58f90540e39324e7a29a7ad471407ae0bf48 before 9e06bbb9ade7cdf28d4a3b5b14e5812881c8df85; f54d0bb8487d2f016fbc4f0e38ef9098f8eb8bd4; 89be8950bab799ddb9cc3777345e3c21bcb32dba; from 3.16.57 before 3.17; from 4.4.168 before 4.5 | CNA record |
References
- https://git.kernel.org/stable/c/74836ae4785b9754bb36d0b18fcc1dec4e5e98d2
- https://git.kernel.org/stable/c/318ef696fa3c712e46bb62a1a828c3cd62f390c3
- https://git.kernel.org/stable/c/55865b3ae03705aa39198783b9cb1f8b96eb44e4
- https://git.kernel.org/stable/c/9e06bbb9ade7cdf28d4a3b5b14e5812881c8df85
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.