CVE-2026-89954mtd: afs: validate v2 image info bounds
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.0 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from b7cf5e2830bbb128699d7635ce8404b7f605bc95 before 1bec05a68414cf8d0cab6cb42445b8603f32ffc4; from b7cf5e2830bbb128699d7635ce8404b7f605bc95 before 3ad8ff12fd44b08af9212ac4883a7e29d2ab7348; from b7cf5e2830bbb128699d7635ce8404b7f605bc95 before 875daa3c750814ff2e2dc050239c390048f0bcd0; from b7cf5e2830bbb128699d7635ce8404b7f605bc95 before da740539e8f370767317e24615349b9342a6e773; from b7cf5e2830bbb128699d7635ce8404b7f605bc95 before 1edea8900ca3e405c1421d8b5c29f97107874f72; from b7cf5e2830bbb128699d7635ce8404b7f605bc95 before 18916f475057cbd2fb8ea6ae86e6b85884ad1d53; from b7cf5e2830bbb128699d7635ce8404b7f605bc95 before d14e6298139f58a87a87d7022e26a7f37f0ddce7; from b7cf5e2830bbb128699d7635ce8404b7f605bc95 before e9290031f736e99ad17c25c00311c92c266843b7 | CNA record |
References
- https://git.kernel.org/stable/c/1bec05a68414cf8d0cab6cb42445b8603f32ffc4
- https://git.kernel.org/stable/c/3ad8ff12fd44b08af9212ac4883a7e29d2ab7348
- https://git.kernel.org/stable/c/875daa3c750814ff2e2dc050239c390048f0bcd0
- https://git.kernel.org/stable/c/da740539e8f370767317e24615349b9342a6e773
- https://git.kernel.org/stable/c/1edea8900ca3e405c1421d8b5c29f97107874f72
- https://git.kernel.org/stable/c/18916f475057cbd2fb8ea6ae86e6b85884ad1d53
- https://git.kernel.org/stable/c/d14e6298139f58a87a87d7022e26a7f37f0ddce7
- https://git.kernel.org/stable/c/e9290031f736e99ad17c25c00311c92c266843b7
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.