CVE-2026-89911

Last refreshed2026-10-19

Status: UPDATED | Advisory ID: CVE-2026-89911

Key Details

CVE	CVE-2026-89911
CVSS Score / Version	7.9 (High) / CVSS v3.1
Updated	2026-10-19
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is changed; confidentiality impact is low; integrity impact is low; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

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. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-89911
CVE	https://www.cve.org/CVERecord?id=CVE-2026-89911

Source

Reference

NVD

CVE