CVE-2026-31492: Linux kernel · RDMA/irdma: Initialize free_qp completion before using it
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in f72996834f7bdefc2b95e3eec30447ee195df44e : update Linux kernel when convenient.
Data as of 5 Nov 2026, 22:19 UTC
Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-11-05.
- Patch
- Available – fixed in f72996834f7bdefc2b95e3eec30447ee195df44e, cd1534c8f4984432382c240f6784408497f5bb0a, af310407f79d5816fc0ab3638e1588b6193316dd +3
Exploitation evidence
Disclosed: evidence found.
CVE published 22 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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AI-suggested
A fix is available in the Linux kernel as indicated by the fixed commit versions. Users should update to a kernel version that includes these fixes to remediate the issue.
Description
A vulnerability in the Linux kernel's RDMA irdma driver was fixed by ensuring the free_qp completion is initialized before use. The flaw occurred in the irdma_create_qp function where, if ib_copy_to_udata failed, cleanup via irdma_destroy_qp would wait on an uninitialized free_qp completion, potentially causing undefined behavior.
References
- git.kernel.org/stable/c/ac1da7bd224d406b6f1b84414f0f652ab43b6bd8 (opens in a new tab)
- git.kernel.org/stable/c/af310407f79d5816fc0ab3638e1588b6193316dd (opens in a new tab)
- git.kernel.org/stable/c/cd1534c8f4984432382c240f6784408497f5bb0a (opens in a new tab)
- git.kernel.org/stable/c/3cb88c12461b71c7d9c604aa2e6a9a477ecfa147 (opens in a new tab)
- git.kernel.org/stable/c/f72996834f7bdefc2b95e3eec30447ee195df44e (opens in a new tab)
- git.kernel.org/stable/c/11a95521fb93c91e2d4ef9d53dc80ef0a755549b (opens in a new tab)