Bug 2535233 (CVE-2026-89911) - CVE-2026-89911 kernel: KVM: arm64: Correctly cap TLBI Range to the architural limit
Summary: CVE-2026-89911 kernel: KVM: arm64: Correctly cap TLBI Range to the architural...
Keywords:
Status: NEW
Alias: CVE-2026-89911
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-16 11:38 UTC by OSIDB Bzimport
Modified: 2026-10-23 22:19 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-16 11:38:14 UTC
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.


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