CVE-2026-89914

CRITICALCVSS 9.3/10

Last modified

CVE-2026-89914 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Sign-extend VA for range-based TLBI invalidation When the decode_range_tlbi() helper was moved to be used for S1 TLBIs, the required sign extension was omitted. Add it. As a result, special care must be taken to not overflow PA bits when this is used for S2 invalidation..

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Sign-extend VA for range-based TLBI invalidation When the decode_range_tlbi() helper was moved to be used for S1 TLBIs, the required sign extension was omitted. Add it. As a result, special care must be taken to not overflow PA bits when this is used for S2 invalidation.

Metrics

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 85bba00425ae0b4b30938ebfdde6d986e5423aff, < 72bce82c4171bf330919ff1b64dc0a36c254ec7d; >= 85bba00425ae0b4b30938ebfdde6d986e5423aff, < 3feb83918e30f0472e058224b926ebfe8a064fac; >= 85bba00425ae0b4b30938ebfdde6d986e5423aff, < 2393470085649f0b973ecceb26fe8fc71edde0c1
LinuxLinux6.16

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-89914?
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Sign-extend VA for range-based TLBI invalidation When the decode_range_tlbi() helper was moved to be used for S1 TLBIs, the required sign extension was omitted. Add it. As a result, special care must be taken to not overflow PA bits when this is used for S2 invalidation.
How severe is CVE-2026-89914?
CVE-2026-89914 has a CVSS score of 9.3/10 (CRITICAL severity).
How do I fix CVE-2026-89914?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST