CVE-2026-89954mtd: afs: validate v2 image info bounds
- 8.0HighCVSS base score
- 0.18%Exploitation in 30 daysEPSS · top 92% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 5 days later
· 5 days later
Published
- 33 days later
· 33 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.0 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H |
| NVDNVD · Received | 3.1 | High8.0 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H |
- EPSS (exploitation in 30 days)
- 0.18% · top 92% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.0.
Affected products
- affected b7cf5e2830bbb128699d7635ce8404b7f605bc95 – < 1bec05a68414cf8d0cab6cb42445b8603f32ffc4
- affected b7cf5e2830bbb128699d7635ce8404b7f605bc95 – < 3ad8ff12fd44b08af9212ac4883a7e29d2ab7348
- affected b7cf5e2830bbb128699d7635ce8404b7f605bc95 – < 875daa3c750814ff2e2dc050239c390048f0bcd0
- affected b7cf5e2830bbb128699d7635ce8404b7f605bc95 – < da740539e8f370767317e24615349b9342a6e773
- affected b7cf5e2830bbb128699d7635ce8404b7f605bc95 – < 1edea8900ca3e405c1421d8b5c29f97107874f72
- affected b7cf5e2830bbb128699d7635ce8404b7f605bc95 – < 18916f475057cbd2fb8ea6ae86e6b85884ad1d53
- affected b7cf5e2830bbb128699d7635ce8404b7f605bc95 – < d14e6298139f58a87a87d7022e26a7f37f0ddce7
- affected b7cf5e2830bbb128699d7635ce8404b7f605bc95 – < e9290031f736e99ad17c25c00311c92c266843b7
- affected 5.2
- unaffected < 5.2
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.51 – ≤ 6.18.*
- unaffected 7.2.5 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/1bec05a68414cf8d0cab6cb42445b8603f32ffc4 (opens in a new tab)
- https://git.kernel.org/stable/c/3ad8ff12fd44b08af9212ac4883a7e29d2ab7348 (opens in a new tab)
- https://git.kernel.org/stable/c/875daa3c750814ff2e2dc050239c390048f0bcd0 (opens in a new tab)
- https://git.kernel.org/stable/c/da740539e8f370767317e24615349b9342a6e773 (opens in a new tab)
- https://git.kernel.org/stable/c/1edea8900ca3e405c1421d8b5c29f97107874f72 (opens in a new tab)
- https://git.kernel.org/stable/c/18916f475057cbd2fb8ea6ae86e6b85884ad1d53 (opens in a new tab)
- https://git.kernel.org/stable/c/d14e6298139f58a87a87d7022e26a7f37f0ddce7 (opens in a new tab)
- https://git.kernel.org/stable/c/e9290031f736e99ad17c25c00311c92c266843b7 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-80554 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-89954)Record last updated .