CVE-2026-89954

Last refreshed2026-10-19

Status: UPDATED | Advisory ID: CVE-2026-89954

Key Details

CVE	CVE-2026-89954
CVSS Score / Version	8.0 (High) / CVSS v3.1
Updated	2026-10-19
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; 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:

mtd: afs: validate v2 image info bounds

The AFS v2 parser uses footer[8] to locate the image information block

inside the current erase block, then uses the image information

region_count to walk entries from a fixed local array. The footer offset

and region count come from flash contents and are not checked against the

erase block or the local image-info array before use.

Reject v2 entries whose image information offset would underflow the

erase block calculation, and reject region counts that cannot fit in the

local image-info array before walking region entries. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-89954
CVE	https://www.cve.org/CVERecord?id=CVE-2026-89954

Source

Reference

NVD

CVE