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

CVE record · `CVE-2026-92507`

- **Identifiers:** `CVE-2026-92507`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **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: `91a7c58fce065506fd98954d27694e5d83c96638 to before df0e9efe61ca706a07b1c9bf93fcb9032455efc4` (git)
  - affected: `91a7c58fce065506fd98954d27694e5d83c96638 to before 7647363fa02046da681acc3c827d9f301c06e0e7` (git)
  - affected: `91a7c58fce065506fd98954d27694e5d83c96638 to before d9c0daf9362aad2aeed1d9c5536d108772a8d31c` (git)
  - affected: `91a7c58fce065506fd98954d27694e5d83c96638 to before 66d65f36d39759e9f62dc746dc71d862f20f827f` (git)
  - affected: `91a7c58fce065506fd98954d27694e5d83c96638 to before c06f2856a1d7e75a5ff247fc05224aa2452e7265` (git)
  - affected: `91a7c58fce065506fd98954d27694e5d83c96638 to before 8b90e701342275f414e36e7421c502237df241ad` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.10`
  - unaffected: `before 5.10` (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

- 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:** 0.0016, the 5th 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-2026-92507](https://www.cve.org/CVERecord?id=CVE-2026-92507)
- [NVD: CVE-2026-92507](https://nvd.nist.gov/vuln/detail/CVE-2026-92507)

### References from the CNA

- <https://git.kernel.org/stable/c/df0e9efe61ca706a07b1c9bf93fcb9032455efc4>
- <https://git.kernel.org/stable/c/7647363fa02046da681acc3c827d9f301c06e0e7>
- <https://git.kernel.org/stable/c/d9c0daf9362aad2aeed1d9c5536d108772a8d31c>
- <https://git.kernel.org/stable/c/66d65f36d39759e9f62dc746dc71d862f20f827f>
- <https://git.kernel.org/stable/c/c06f2856a1d7e75a5ff247fc05224aa2452e7265>
- <https://git.kernel.org/stable/c/8b90e701342275f414e36e7421c502237df241ad>

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-2026-92507>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-92507/>. Everything for agents: <https://agentprime.io/llms.txt>.