CVE-2026-31492
RDMA/irdma: Initialize free_qp completion before using it
Description
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.
INFO
Published Date :
April 22, 2026, 2:16 p.m.
Last Modified :
April 22, 2026, 2:16 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Initialize free_qp completion before ib_copy_to_udata call.
- Apply the Linux kernel patch for RDMA/irdma.
- Update the Linux kernel to the patched version.
References to Advisories, Solutions, and Tools
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CVE-2026-31492.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-31492 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-31492
weaknesses.
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Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 22, 2026
Action Type Old Value New Value Added Description 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. Added Reference https://git.kernel.org/stable/c/11a95521fb93c91e2d4ef9d53dc80ef0a755549b Added Reference https://git.kernel.org/stable/c/3cb88c12461b71c7d9c604aa2e6a9a477ecfa147 Added Reference https://git.kernel.org/stable/c/ac1da7bd224d406b6f1b84414f0f652ab43b6bd8 Added Reference https://git.kernel.org/stable/c/af310407f79d5816fc0ab3638e1588b6193316dd Added Reference https://git.kernel.org/stable/c/cd1534c8f4984432382c240f6784408497f5bb0a Added Reference https://git.kernel.org/stable/c/f72996834f7bdefc2b95e3eec30447ee195df44e