Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Correctly cap TLBI Range to the architural limit TLB Invalidation by Range has a fairly powerful way of encoding pretty large ranges in a small number of bits. This range can be based on an arbitrary VA, which means it is pretty easy for a guest to generate an overflow should the hypervisor be naive enough to add the range to the base... Make sure the range is capped to the limit dictated by the address bit that determines the VA range. For an IPA invalidation, this is further corrected down the line to ignore the upper range.
CVSS Score
HIGH
References
- https://git.kernel.org/stable/c/2de38f0448b45d27eba984fc0d9edb7a138972c2
- https://git.kernel.org/stable/c/566b1f08d983615f731cc693f2ad59db302c6b57
- https://git.kernel.org/stable/c/69a598288195947a1662b53de702eb6976af96b7
FAQ
What is CVE-2026-89911?
CVE-2026-89911 is a vulnerability with a CVSS score of 7.9 (HIGH). In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Correctly cap TLBI Range to the architural limit TLB Invalidation by Range has a fairly powerful way of encoding prett...
How severe is CVE-2026-89911?
CVE-2026-89911 has been rated HIGH with a CVSS base score of 7.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-89911?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.