# i3c: master: Fix info leak and UAF in device unregister path

CVE record · `CVE-2026-80952`

- **Identifiers:** `CVE-2026-80952`
- **State:** Confirmed
- **Severity:** CVSS 7.8 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, 19:42 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: `3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to before 334cfb5e285cece5dc49fb3fb8ea9b70b2cb5d7e` (git)
  - affected: `3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to before 109995153898454c7795c2c299fd0a0b57456a4b` (git)
  - affected: `3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to before c64daaaba08e490c8347ff60aacac4dd51249f91` (git)
  - affected: `3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to before ef72ff6650c4ebf2b444708d84df66db42f262d9` (git)
  - affected: `3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to before c16b6f25e0cc2dd1055dde1256cbf5a9e888cf49` (git)
  - affected: `3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to before 94fb9786d67a8f8b899e77381620f86bad94fdf7` (git)
  - affected: `3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to before 4837be0f9ac2efe5e83b35a696b6242c473d280c` (git)
  - affected: `3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 to before d2c743efd2d1ee64e94324664808f623dd865872` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.0`
  - unaffected: `before 5.0` (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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0013, the 2nd 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-2026-80952](https://www.cve.org/CVERecord?id=CVE-2026-80952)
- [NVD: CVE-2026-80952](https://nvd.nist.gov/vuln/detail/CVE-2026-80952)

### References from the CNA

- <https://git.kernel.org/stable/c/334cfb5e285cece5dc49fb3fb8ea9b70b2cb5d7e>
- <https://git.kernel.org/stable/c/109995153898454c7795c2c299fd0a0b57456a4b>
- <https://git.kernel.org/stable/c/c64daaaba08e490c8347ff60aacac4dd51249f91>
- <https://git.kernel.org/stable/c/ef72ff6650c4ebf2b444708d84df66db42f262d9>
- <https://git.kernel.org/stable/c/c16b6f25e0cc2dd1055dde1256cbf5a9e888cf49>
- <https://git.kernel.org/stable/c/94fb9786d67a8f8b899e77381620f86bad94fdf7>
- <https://git.kernel.org/stable/c/4837be0f9ac2efe5e83b35a696b6242c473d280c>
- <https://git.kernel.org/stable/c/d2c743efd2d1ee64e94324664808f623dd865872>

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-2026-80952>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80952/>. Everything for agents: <https://agentprime.io/llms.txt>.