PT-2026-8111 · Linux · Linux Kernel

Published 2026-01-01 · Updated 2026-05-26 · CVE-2026-23118

Positive Technologies (AI Summary)

CVSS v3.1

4.7

Medium

Base vector

AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Description The Linux kernel contains a flaw related to rxrpc, specifically a data-race warning and potential load/store tearing. The issue involves lockless accesses to ->last tx at, which can lead to inaccuracies in determining when to send keepalive packets. Additionally, tearing can occur on 32-bit architectures due to ->last tx at being a 64-bit value. The problem is addressed by switching to an unsigned integer for ->last tx at and storing only the least significant word of the time64 t.

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

Exploit

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

AZL-77691

CVE-2026-23118

ECHO-00E5-5A2E-D5FF

Affected Products

Linux Kernel

References · 23

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23118.json · Exploit
• https://osv.dev/vulnerability/CVE-2026-23118 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2026-23118 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-23118 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23118 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-23118 · Vendor Advisory
• https://git.kernel.org/stable/c/f8cf1368e0a5491b27189a695c36f64e48f3d19d · Patch
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2026-23118 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23118 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-77691 · Vendor Advisory
• https://git.kernel.org/stable/c/c08cf314191cd0f8699089715efb9eff030f0086 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-23118 · Vendor Advisory
• https://git.kernel.org/stable/c/5d5fe8bcd331f1e34e0943ec7c18432edfcf0e8b · Patch
• https://ubuntu.com/security/CVE-2026-23118 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-23118 · Security Note