by Kastro
Paper/Archive/CVE-2026-89914

CVE-2026-89914

Linux Linux — KVM: arm64: Sign-extend VA for range-based TLBI invalidation

EPSS 0.2%CVSS 9.3
critical.is priorityof 100
30
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 9.1.091 × 201.8No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Linux85bba00425ae0b4b30938ebfdde6d986e5423aff – < 72bce82c4171bf330919ff1b64dc0a36c254ec7d72bce82c4171bf330919ff1b64dc0a36c254ec7dCNA
Linux85bba00425ae0b4b30938ebfdde6d986e5423aff – < 3feb83918e30f0472e058224b926ebfe8a064fac3feb83918e30f0472e058224b926ebfe8a064facCNA
Linux85bba00425ae0b4b30938ebfdde6d986e5423aff – < 2393470085649f0b973ecceb26fe8fc71edde0c12393470085649f0b973ecceb26fe8fc71edde0c1CNA
Linux6.166.18.51CNA

Scores by source

Linux (CNA)9.3CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References

refgit.kernel.org/stable/c/72bce82c4171bf330919ff1b64dc0a36c254ec7drefgit.kernel.org/stable/c/3feb83918e30f0472e058224b926ebfe8a064facrefgit.kernel.org/stable/c/2393470085649f0b973ecceb26fe8fc71edde0c1