# mtd: afs: validate v2 image info bounds

CVE record · `CVE-2026-89954`

- **Identifiers:** `CVE-2026-89954`
- **State:** Confirmed
- **Severity:** CVSS 8.0 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 16 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 10:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `b7cf5e2830bbb128699d7635ce8404b7f605bc95 to before 1bec05a68414cf8d0cab6cb42445b8603f32ffc4` (git)
  - affected: `b7cf5e2830bbb128699d7635ce8404b7f605bc95 to before 3ad8ff12fd44b08af9212ac4883a7e29d2ab7348` (git)
  - affected: `b7cf5e2830bbb128699d7635ce8404b7f605bc95 to before 875daa3c750814ff2e2dc050239c390048f0bcd0` (git)
  - affected: `b7cf5e2830bbb128699d7635ce8404b7f605bc95 to before da740539e8f370767317e24615349b9342a6e773` (git)
  - affected: `b7cf5e2830bbb128699d7635ce8404b7f605bc95 to before 1edea8900ca3e405c1421d8b5c29f97107874f72` (git)
  - affected: `b7cf5e2830bbb128699d7635ce8404b7f605bc95 to before 18916f475057cbd2fb8ea6ae86e6b85884ad1d53` (git)
  - affected: `b7cf5e2830bbb128699d7635ce8404b7f605bc95 to before d14e6298139f58a87a87d7022e26a7f37f0ddce7` (git)
  - affected: `b7cf5e2830bbb128699d7635ce8404b7f605bc95 to before e9290031f736e99ad17c25c00311c92c266843b7` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.2`
  - unaffected: `before 5.2` (semver)
  - unaffected: `5.10.270 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.51 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.5 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 8.0 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0019, the 8th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 16 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89954](https://www.cve.org/CVERecord?id=CVE-2026-89954)
- [NVD: CVE-2026-89954](https://nvd.nist.gov/vuln/detail/CVE-2026-89954)

### References from the CNA

- <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>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-89954>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89954/>. Everything for agents: <https://agentprime.io/llms.txt>.