CVE-2026-89954

linux: In the Linux kernel, the following vulnerability has been resolved: mtd: afs: validate v2 image info bounds The AFS...

CVE-2026-89954 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-89954, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
8.0
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0019
8th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
linux · Debian 12.15 (bookworm) 6.1.190-1 DEBIAN-CVE-2026-89954 Sep 23, 2026
linux · Debian 13.5 (trixie) 6.12.111-1 DEBIAN-CVE-2026-89954 Sep 23, 2026
linux · Debian 14 7.2.6-1 DEBIAN-CVE-2026-89954 Sep 23, 2026
linux-6.12 · Debian 12.15 (bookworm) 6.12.111-1~deb12u1 DEBIAN-CVE-2026-89954 Sep 23, 2026

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