KVM: arm64: Sign-extend VA for range-based TLBI invalidation (CVE-2026-89914) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-89914

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

Answer in brief

CVE-2026-89914 records a Unknown severity vulnerability in KVM: arm64: Sign-extend VA for range-based TLBI invalidation. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 16, 2026Updated Sep 16, 2026Source checked Sep 16, 2026First seen by HOL Sep 16, 2026Material review Sep 16, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=85bba00425ae0b4b30938ebfdde6d986e5423aff <72bce82c4171bf330919ff1b64dc0a36c254ec7d \|\| >=85bba00425ae0b4b30938ebfdde6d986e5423aff <3feb83918e30f0472e058224b926ebfe8a064fac \|\| >=85bba00425ae0b4b30938ebfdde6d986e5423aff <2393470085649f0b973ecceb26fe8fc71edde0c1	72bce82c4171bf330919ff1b64dc0a36c254ec7d, 3feb83918e30f0472e058224b926ebfe8a064fac, 2393470085649f0b973ecceb26fe8fc71edde0c1
Linux/Linuxgeneric	6.16	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 72bce82c4171bf330919ff1b64dc0a36c254ec7d if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 16, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.