Red Hat Security Advisory: kpatch-patch-5_14_0-427_13_1, kpatch-patch-5_14_0-427_31_1, and
Affects Red HatSource GCVE Database
Not known to be exploited.
Data as of 5 Nov 2026, 14:50 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Exploitation evidence
Disclosed: evidence found.
CVE published 8 Jan 2025
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 to address this vulnerability. Users should apply the kpatch-patch updates for kernel-5.14.0-427.13.1.el9_4 as provided by Red Hat. A system reboot is required for the update to take effect. No additional mitigation steps are indicated beyond applying the official patches and rebooting.
Description
A race condition vulnerability in the Multipath TCP (mptcp) implementation of the Linux kernel affects Red Hat Enterprise Linux 9.4 Extended Update Support. The flaw occurs during subflow creation in the mptcp_rcv_space_adjust function. Red Hat has released live patch modules for kernel-5.14.0-427.13.1.el9_4 to address this issue. The update requires a system reboot to take effect.