# smb/server: fix session leak in ksmbd_session_register()

CVE record · `CVE-2026-90152`

- **Identifiers:** `CVE-2026-90152`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:06 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: `f623f627ad2b1dc215ab3b0df53fb05cfd3a1c3b to before 869807cdd5599c289c21d40f36a504d72a0d23c6` (git)
  - affected: `f5c779b7ddbda30866cf2a27c63e34158f858c73 to before 988f99bfddda4e2d1da5f6e98b237dd85e123cee` (git)
  - affected: `f5c779b7ddbda30866cf2a27c63e34158f858c73 to before 03a22a003f41b182245e6c71fe565e277cff7094` (git)
  - affected: `f5c779b7ddbda30866cf2a27c63e34158f858c73 to before b967a595fb735d313a8676b2ca6a4cba38506482` (git)
  - affected: `f5c779b7ddbda30866cf2a27c63e34158f858c73 to before 55c677619084f9c9fa4146d933cc8ccafc924c87` (git)
  - affected: `f5c779b7ddbda30866cf2a27c63e34158f858c73 to before 99b25b046e47e4904373cfeb445c5483f1633d88` (git)
  - affected: `708c304b583d789957399dd8237f212cf8ad1e4d` (git)
  - affected: `d270631c21e68fb8016d6e231d022d7023a2df6f` (git)
  - affected: `02f41d88f15d6b7d523e52cc3f87488f57e9265b` (git)
  - affected: `6.1.29 to before 6.1.191` (semver)
  - affected: `5.15.145 to before 5.16` (semver)
  - affected: `6.2.16 to before 6.3` (semver)
  - and 1 more
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.4`
  - unaffected: `before 6.4` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 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:** 0.0022, the 11th percentile, on 13 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 17 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-90152](https://www.cve.org/CVERecord?id=CVE-2026-90152)
- [NVD: CVE-2026-90152](https://nvd.nist.gov/vuln/detail/CVE-2026-90152)

### References from the CNA

- <https://git.kernel.org/stable/c/869807cdd5599c289c21d40f36a504d72a0d23c6>
- <https://git.kernel.org/stable/c/988f99bfddda4e2d1da5f6e98b237dd85e123cee>
- <https://git.kernel.org/stable/c/03a22a003f41b182245e6c71fe565e277cff7094>
- <https://git.kernel.org/stable/c/b967a595fb735d313a8676b2ca6a4cba38506482>
- <https://git.kernel.org/stable/c/55c677619084f9c9fa4146d933cc8ccafc924c87>
- <https://git.kernel.org/stable/c/99b25b046e47e4904373cfeb445c5483f1633d88>

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-2026-90152>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90152/>. Everything for agents: <https://agentprime.io/llms.txt>.