PT-2026-34396 · Linux · Linux Kernel

CVE-2026-31491 · Published 2026-04-22 · Updated 2026-04-28

Positive Technologies (AI Summary)

CVSS v4.0

8.5

High

Base vector

AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the RDMA/irdma component where the operating system can pass U32 MAX for SQ, RQ, or SRQ size. This can lead to integer overflow and truncation of the SQ, RQ, or SRQ depth, causing the system to return a success status when the operation should have failed.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2026-31491

Affected Products

Linux Kernel

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31491.json · Exploit
• https://cve.org/CVERecord?id=CVE-2026-31491 · Security Note
• https://git.kernel.org/stable/c/e37afcb56ae070477741fe2d6e61fc0c542cce2d · Patch
• https://git.kernel.org/stable/c/3f08351de5ca4f2f724b86ad252fbc21289467e1 · Patch
• https://git.kernel.org/stable/c/cbd852f5700eb3f64392452faf693ac45cae8281 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-31491 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31491 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31491 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-31491 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31491 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31491 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-31491 · Vendor Advisory
• https://docs.bell-sw.com/security/cves/CVE-2026-31491 · Note
• https://twitter.com/CVEnew/status/2046979988251922885 · Twitter Post
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note