# media: cec: stm32: prevent out-of-bounds write on RX overflow

CVE record · `CVE-2026-89725`

- **Identifiers:** `CVE-2026-89725`
- **State:** Confirmed
- **Severity:** CVSS 8.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:46 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: `d69ae57453c80a2193bcdb3fd762efbec447eecf to before f2499b720ea9b874d58770885c6c2e8445a8c3ef` (git)
  - affected: `d69ae57453c80a2193bcdb3fd762efbec447eecf to before 3df1a4026662121011187247897fe95fd84e8a3a` (git)
  - affected: `d69ae57453c80a2193bcdb3fd762efbec447eecf to before 37ac45f7d6e3a6a5dcf6452a0b7bad9a543e8344` (git)
  - affected: `d69ae57453c80a2193bcdb3fd762efbec447eecf to before 1b4fdefd788db990d1805feb5c7b2388de791ecd` (git)
  - affected: `d69ae57453c80a2193bcdb3fd762efbec447eecf to before c3edd7fb8e3692423a702705509947fc9c30b3d1` (git)
  - affected: `d69ae57453c80a2193bcdb3fd762efbec447eecf to before 0c260d3f97e52978a8c769bb095ac0901333a3ac` (git)
  - affected: `d69ae57453c80a2193bcdb3fd762efbec447eecf to before a85ce3b175615c2e13bc01e8a1b6b6b6910fde57` (git)
  - affected: `d69ae57453c80a2193bcdb3fd762efbec447eecf to before fb9dda38d4b9e90db07ed9a0ee2d35bf85494035` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.13`
  - unaffected: `before 4.13` (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: `6.12.109 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.50 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.4 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0026, the 18th percentile, on 14 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 11 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89725](https://www.cve.org/CVERecord?id=CVE-2026-89725)
- [NVD: CVE-2026-89725](https://nvd.nist.gov/vuln/detail/CVE-2026-89725)

### References from the CNA

- <https://git.kernel.org/stable/c/f2499b720ea9b874d58770885c6c2e8445a8c3ef>
- <https://git.kernel.org/stable/c/3df1a4026662121011187247897fe95fd84e8a3a>
- <https://git.kernel.org/stable/c/37ac45f7d6e3a6a5dcf6452a0b7bad9a543e8344>
- <https://git.kernel.org/stable/c/1b4fdefd788db990d1805feb5c7b2388de791ecd>
- <https://git.kernel.org/stable/c/c3edd7fb8e3692423a702705509947fc9c30b3d1>
- <https://git.kernel.org/stable/c/0c260d3f97e52978a8c769bb095ac0901333a3ac>
- <https://git.kernel.org/stable/c/a85ce3b175615c2e13bc01e8a1b6b6b6910fde57>
- <https://git.kernel.org/stable/c/fb9dda38d4b9e90db07ed9a0ee2d35bf85494035>

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-2026-89725>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89725/>. Everything for agents: <https://agentprime.io/llms.txt>.