# smb: client: avoid using uninitialized SIDs in cifs_posix_to_fattr()

CVE record · `CVE-2026-97554`

- **Identifiers:** `CVE-2026-97554`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 25 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 25 Sept 2026, 10:21 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: `9934430e2178d5164eb1ac91a9b092f9e7e64745 to before 1915b69e36906968e2b698699d0f219875ae846e` (git)
  - affected: `9934430e2178d5164eb1ac91a9b092f9e7e64745 to before 604feb3e8141bf11f5afd48d36d401fee5af9536` (git)
  - affected: `9934430e2178d5164eb1ac91a9b092f9e7e64745 to before 33106019c3be57b5fc6411cfaad6d98214a51265` (git)
  - affected: `9934430e2178d5164eb1ac91a9b092f9e7e64745 to before 2be31f252ade791b84f7164991f14436aed1d4b9` (git)
  - affected: `9934430e2178d5164eb1ac91a9b092f9e7e64745 to before c9a8b60ce140a68d172452f418137fc7ddbae7db` (git)
  - affected: `9934430e2178d5164eb1ac91a9b092f9e7e64745 to before da6e25842431982d5a53cf00d925b98c690f4467` (git)
  - affected: `dd80b98bdf0a4b3206739f3513b0518f27a7b4ef` (git)
  - affected: `d8e39c11f66125f49de55537a6efc8ecadf4a0f7` (git)
  - affected: `5.8.17 to before 5.9` (semver)
  - affected: `5.9.2 to before 5.10` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.10`
  - unaffected: `before 5.10` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.114 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.57 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.7 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:** 0.0021, the 11th percentile, on 12 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 25 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-97554](https://www.cve.org/CVERecord?id=CVE-2026-97554)
- [NVD: CVE-2026-97554](https://nvd.nist.gov/vuln/detail/CVE-2026-97554)

### References from the CNA

- <https://git.kernel.org/stable/c/1915b69e36906968e2b698699d0f219875ae846e>
- <https://git.kernel.org/stable/c/604feb3e8141bf11f5afd48d36d401fee5af9536>
- <https://git.kernel.org/stable/c/33106019c3be57b5fc6411cfaad6d98214a51265>
- <https://git.kernel.org/stable/c/2be31f252ade791b84f7164991f14436aed1d4b9>
- <https://git.kernel.org/stable/c/c9a8b60ce140a68d172452f418137fc7ddbae7db>
- <https://git.kernel.org/stable/c/da6e25842431982d5a53cf00d925b98c690f4467>

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-2026-97554>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-97554/>. Everything for agents: <https://agentprime.io/llms.txt>.