PT-2025-49671 · Linux · Linux Kernel

Published 2025-12-09 · Updated 2026-02-24 · CVE-2023-53811

Positive Technologies (AI Summary)

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

Description The irdma driver within the Linux kernel could use a number of MSIX vectors exceeding the number of online CPUs plus one. This resulted in a kernel warning when attempting to update the affinity hint with a CPU mask greater than the maximum CPU IDs. The issue was addressed by capping the MSIX vectors to the number of online CPUs plus one.

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

Exploit

Related Identifiers

CVE-2023-53811

RHSA-2023:2458

RHSA-2023:2951

SUSE-SU-2026:0263-1

SUSE-SU-2026:0317-1

SUSE-SU-2026:0411-1

SUSE-SU-2026:0617-1

Affected Products

Linux Kernel

References · 976

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53811.json · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53811 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53811 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53811 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53811 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:0617-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53811 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:0411-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0263-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0317-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-53811 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53811 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-53811 · Vendor Advisory
• https://suse.com/security/cve/CVE-2023-53862 · Note
• https://bugzilla.suse.com/1255970 · Note