CVE-2026-31491 Details
Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Harden depth calculation functions An issue was exposed where OS can pass in U32_MAX for SQ/RQ/SRQ size. This can cause integer overflow and truncation of SQ/RQ/SRQ depth returning a success when it should have failed. Harden the functions to do all depth calculations and boundary checking in u64 sizes.
A vulnerability in the Linux kernel's RDMA/irdma component was introduced by improper handling of depth calculations for send queues (SQ), receive queues (RQ), and shared receive queues (SRQ). The issue arises because the operating system can send a value of U32_MAX for the sizes of these queues. This can lead to an integer overflow and a truncation of the depth values, causing the system to incorrectly report a successful operation when it should have failed. The vulnerability affects several versions of the Linux kernel.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been addressed. The official Linux kernel Git repository can be used to download the patched version.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/3f08351de5ca4f2f724b86ad252fbc21289467e1 | kernel.org | Patch |
| https://git.kernel.org/stable/c/cbd852f5700eb3f64392452faf693ac45cae8281 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e37afcb56ae070477741fe2d6e61fc0c542cce2d | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-190 | Integer Overflow or Wraparound | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.18.1, < 6.18.21 >= 6.19, < 6.19.11 6.18 - 7.0 rc1 7.0 rc2 7.0 rc3 7.0 rc4 7.0 rc5 7.0 rc6 7.0 rc7 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Apr 28, 2026 | Initial Analysis | [email protected] |
| Apr 22, 2026 | New CVE Received | kernel.org |