Red Hat Security Advisory: kpatch-patch-4_18_0-372_131_1, kpatch-patch-4_18_0-372_137_1
Affects Red HatSource GCVE Database
Not known to be exploited.
Data as of 5 Nov 2026, 19:20 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Exploitation evidence
Disclosed: evidence found.
CVE published 5 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
AI-suggested
Red Hat has released official live patch modules (kpatch) to fix this vulnerability for the affected kernel versions. Applying these patches and rebooting the system is required to remediate the issue. Users should follow the update instructions provided by Red Hat in their advisory and knowledge base article. No additional mitigation steps are indicated.
Description
A security vulnerability identified as CVE-2025-40248 affects the Linux kernel's vsock component in Red Hat Enterprise Linux 8.6. This vulnerability may lead to memory corruption. Red Hat has released multiple kpatch live patch modules targeting kernel version 4.18.0-372.131.1.el8_6 to address this issue. The patches require a system reboot to take effect. The update is rated as important by Red Hat Product Security.