# RDMA/core: Fix potential use after free in counter_release()

CVE record · `CVE-2026-92509`

- **Identifiers:** `CVE-2026-92509`
- **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:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:10 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: `99fa331dc8629be55ac7a0cca0dc56492070ddac to before 5eb0c57a8b568eb08f464861d84d518a2af939ac` (git)
  - affected: `99fa331dc8629be55ac7a0cca0dc56492070ddac to before d5cc211e8c39e46f357d30a092d683e84d560de9` (git)
  - affected: `99fa331dc8629be55ac7a0cca0dc56492070ddac to before 2f0c6705e26ba92c0c6b0b0908a2d3f35a039d5b` (git)
  - affected: `99fa331dc8629be55ac7a0cca0dc56492070ddac to before 8c013e3a8d8273da4d47bf1c27f016a3551996f5` (git)
  - affected: `99fa331dc8629be55ac7a0cca0dc56492070ddac to before 64c72390d8407ea86de712a477c796b07d37abc4` (git)
  - affected: `99fa331dc8629be55ac7a0cca0dc56492070ddac to before 235ef2d0e750885c29340b0fc40620a7a4f52e12` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.3`
  - unaffected: `before 5.3` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 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:** 0.0017, the 6th 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-2026-92509](https://www.cve.org/CVERecord?id=CVE-2026-92509)
- [NVD: CVE-2026-92509](https://nvd.nist.gov/vuln/detail/CVE-2026-92509)

### References from the CNA

- <https://git.kernel.org/stable/c/5eb0c57a8b568eb08f464861d84d518a2af939ac>
- <https://git.kernel.org/stable/c/d5cc211e8c39e46f357d30a092d683e84d560de9>
- <https://git.kernel.org/stable/c/2f0c6705e26ba92c0c6b0b0908a2d3f35a039d5b>
- <https://git.kernel.org/stable/c/8c013e3a8d8273da4d47bf1c27f016a3551996f5>
- <https://git.kernel.org/stable/c/64c72390d8407ea86de712a477c796b07d37abc4>
- <https://git.kernel.org/stable/c/235ef2d0e750885c29340b0fc40620a7a4f52e12>

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-2026-92509>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-92509/>. Everything for agents: <https://agentprime.io/llms.txt>.