# CVE-2026-31492: RDMA/irdma: Initialize free_qp completion before using it

Status: published. Published: 2026-04-22. Updated: 2026-11-05.

In the Linux kernel, the following vulnerability has been resolved:

RDMA/irdma: Initialize free_qp completion before using it

In irdma_create_qp, if ib_copy_to_udata fails, it will call
irdma_destroy_qp to clean up which will attempt to wait on
the free_qp completion, which is not initialized yet. Fix this
by initializing the completion before the ib_copy_to_udata call.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ b48c24c2d710cf34810c555dcef883a3d35a9c08; < ac1da7bd224d406b6f1b84414f0f652ab43b6bd8 (affected, git); ≥ b48c24c2d710cf34810c555dcef883a3d35a9c08; < af310407f79d5816fc0ab3638e1588b6193316dd (affected, git); ≥ b48c24c2d710cf34810c555dcef883a3d35a9c08; < cd1534c8f4984432382c240f6784408497f5bb0a (affected, git); ≥ b48c24c2d710cf34810c555dcef883a3d35a9c08; < 3cb88c12461b71c7d9c604aa2e6a9a477ecfa147 (affected, git); ≥ b48c24c2d710cf34810c555dcef883a3d35a9c08; < f72996834f7bdefc2b95e3eec30447ee195df44e (affected, git); ≥ b48c24c2d710cf34810c555dcef883a3d35a9c08; < 11a95521fb93c91e2d4ef9d53dc80ef0a755549b (affected, git). Source: CNA: Linux
- Linux / Linux: 5.14 (affected); ≥ 0; < 5.14 (unaffected, semver); ≥ 6.1.168; ≤ 6.1.* (unaffected, semver); ≥ 6.6.131; ≤ 6.6.* (unaffected, semver); ≥ 6.12.80; ≤ 6.12.* (unaffected, semver); ≥ 6.18.21; ≤ 6.18.* (unaffected, semver); ≥ 6.19.11; ≤ 6.19.* (unaffected, semver); ≥ 7.0; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.12% as of 2026-11-05; percentile 2.04%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: Not reported

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://git.kernel.org/stable/c/ac1da7bd224d406b6f1b84414f0f652ab43b6bd8 (CNA: Linux)

- https://git.kernel.org/stable/c/af310407f79d5816fc0ab3638e1588b6193316dd (CNA: Linux)

- https://git.kernel.org/stable/c/cd1534c8f4984432382c240f6784408497f5bb0a (CNA: Linux)

- https://git.kernel.org/stable/c/3cb88c12461b71c7d9c604aa2e6a9a477ecfa147 (CNA: Linux)

- https://git.kernel.org/stable/c/f72996834f7bdefc2b95e3eec30447ee195df44e (CNA: Linux)

- https://git.kernel.org/stable/c/11a95521fb93c91e2d4ef9d53dc80ef0a755549b (CNA: Linux)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2026-31492; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-31492; retrieved 2026-11-05; source updated Not reported

Revision: a26e515c63023b2bcfb1288c775c615f08c64f1af93d0d4a0edd7eec499cdfde

Canonical: https://y2.dev/cve/CVE-2026-31492

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