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CVE-2025-40248VulnerabilityPublished Updated

Red Hat Security Advisory: kpatch-patch-5_14_0-570_17_1, kpatch-patch-5_14_0-570_39_1, and

Affects Red HatSource GCVE Database

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Not known to be exploited.

Data as of 5 Nov 2026, 19:19 UTC

Severity
High

Rated by Threat Radar · No CVSS score from NVD or the CNA

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 kpatch live patch modules to fix this vulnerability for kernel-5.14.0-570.17.1.el9_6 in Red Hat Enterprise Linux 9.6 Extended Update Support. Users should apply the provided updates and reboot their systems to ensure the patch is fully effective. Refer to Red Hat's article https://access.redhat.com/articles/11258 for detailed update instructions.

Description

A vulnerability identified as CVE-2025-40248 affects the Linux kernel's vsock component in Red Hat Enterprise Linux 9.6 Extended Update Support. This vulnerability may lead to memory corruption. Red Hat has issued live patch modules for kernel-5.14.0-570.17.1.el9_6 to address this issue. The update requires a system reboot to take effect.

References

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