# USB: serial: option: fix slab OOB read in interrupt URB callback

CVE record · `CVE-2026-80827`

- **Identifiers:** `CVE-2026-80827`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 4 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 4 Sept 2026, 15:54 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: `58cfe9113e485f7e04bd0eac4fc4251b330af501 to before fbe60fd2abc8a5561f39719a41ad9a01b5d8e567` (git)
  - affected: `58cfe9113e485f7e04bd0eac4fc4251b330af501 to before 94e5525697b9e91ddc4071129874120a50a4f342` (git)
  - affected: `58cfe9113e485f7e04bd0eac4fc4251b330af501 to before 6b8cf5422c7e96ed5b22a8368eff663f3f98b8ec` (git)
  - affected: `58cfe9113e485f7e04bd0eac4fc4251b330af501 to before 030e3a73d3c3aa67c44454649e984d6383cdb7d3` (git)
  - affected: `58cfe9113e485f7e04bd0eac4fc4251b330af501 to before 060db7d48af1e650643c8b8319111a9ea2ce4486` (git)
  - affected: `58cfe9113e485f7e04bd0eac4fc4251b330af501 to before 2ef5560387f2c0713cee975be2b24b281bd90f3e` (git)
  - affected: `58cfe9113e485f7e04bd0eac4fc4251b330af501 to before a72a13c83a652516a0e469d275b81d29a7429049` (git)
  - affected: `58cfe9113e485f7e04bd0eac4fc4251b330af501 to before d762aef4eba354066be21a5d88eb2066e282f4c9` (git)
  - affected: `58cfe9113e485f7e04bd0eac4fc4251b330af501 to before 885d802f544ca7bfa8f3984d94233cce715bb6b3` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.12`
  - unaffected: `before 2.6.12` (semver)
  - unaffected: `5.10.269 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.220 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.187 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.156 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.108 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.49 to 6.18.*, inclusive` (semver)
  - unaffected: `7.1.13 to 7.1.*, inclusive` (semver)
  - unaffected: `7.2.3 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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0019, the 9th 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 4 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-80827](https://www.cve.org/CVERecord?id=CVE-2026-80827)
- [NVD: CVE-2026-80827](https://nvd.nist.gov/vuln/detail/CVE-2026-80827)

### References from the CNA

- <https://git.kernel.org/stable/c/fbe60fd2abc8a5561f39719a41ad9a01b5d8e567>
- <https://git.kernel.org/stable/c/94e5525697b9e91ddc4071129874120a50a4f342>
- <https://git.kernel.org/stable/c/6b8cf5422c7e96ed5b22a8368eff663f3f98b8ec>
- <https://git.kernel.org/stable/c/030e3a73d3c3aa67c44454649e984d6383cdb7d3>
- <https://git.kernel.org/stable/c/060db7d48af1e650643c8b8319111a9ea2ce4486>
- <https://git.kernel.org/stable/c/2ef5560387f2c0713cee975be2b24b281bd90f3e>
- <https://git.kernel.org/stable/c/a72a13c83a652516a0e469d275b81d29a7429049>
- <https://git.kernel.org/stable/c/d762aef4eba354066be21a5d88eb2066e282f4c9>
- <https://git.kernel.org/stable/c/885d802f544ca7bfa8f3984d94233cce715bb6b3>

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-2026-80827>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80827/>. Everything for agents: <https://agentprime.io/llms.txt>.