# smack: fix cred UAF in smack_file_send_sigiotask()

CVE record · `CVE-2026-80928`

- **Identifiers:** `CVE-2026-80928`
- **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: `3b11a1decef07c19443d24ae926982bc8ec9f4c0 to before a512366d84e134a9eefc2cc40eeb6e80e2ec162c` (git)
  - affected: `3b11a1decef07c19443d24ae926982bc8ec9f4c0 to before 7c7fe043f3099d0d35002b248967f75e55345b93` (git)
  - affected: `3b11a1decef07c19443d24ae926982bc8ec9f4c0 to before f9c7b1f2b9d8f4176d2632743f51400855978ace` (git)
  - affected: `3b11a1decef07c19443d24ae926982bc8ec9f4c0 to before b5bcf3adfa27279da4401ab8f1e1a706601a92be` (git)
  - affected: `3b11a1decef07c19443d24ae926982bc8ec9f4c0 to before ed64aa505875a3b4defd504ee8e59e1949246a62` (git)
  - affected: `3b11a1decef07c19443d24ae926982bc8ec9f4c0 to before b791401bf389a1546a830d2b381ca60fe94c7870` (git)
  - affected: `3b11a1decef07c19443d24ae926982bc8ec9f4c0 to before fedc88e38ce979a720cd2de042578cb5df3dc8de` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.29`
  - unaffected: `before 2.6.29` (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-2026-80928](https://www.cve.org/CVERecord?id=CVE-2026-80928)
- [NVD: CVE-2026-80928](https://nvd.nist.gov/vuln/detail/CVE-2026-80928)

### References from the CNA

- <https://git.kernel.org/stable/c/a512366d84e134a9eefc2cc40eeb6e80e2ec162c>
- <https://git.kernel.org/stable/c/7c7fe043f3099d0d35002b248967f75e55345b93>
- <https://git.kernel.org/stable/c/f9c7b1f2b9d8f4176d2632743f51400855978ace>
- <https://git.kernel.org/stable/c/b5bcf3adfa27279da4401ab8f1e1a706601a92be>
- <https://git.kernel.org/stable/c/ed64aa505875a3b4defd504ee8e59e1949246a62>
- <https://git.kernel.org/stable/c/b791401bf389a1546a830d2b381ca60fe94c7870>
- <https://git.kernel.org/stable/c/fedc88e38ce979a720cd2de042578cb5df3dc8de>

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-2026-80928>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80928/>. Everything for agents: <https://agentprime.io/llms.txt>.