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CVE-2026-74581VulnerabilityPublished Updated

Red Hat Security Advisory: kernel security update

Affects Linux kernelSource GCVE Database

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Not known to be exploited.

Data as of 31 Oct 2026, 11:08 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Aug 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 30 Oct 2026.

What to do

AI-suggested

Red Hat has released an updated kernel package that addresses this vulnerability. Users should apply the security update as provided in Red Hat Advisory RHSA-2026:59994 and reboot their systems to ensure the fix takes effect. Red Hat strongly recommends treating all kernel updates as security-relevant and advises against delaying the application of this update.

Description

A use-after-free vulnerability exists in the Linux kernel's IPv6 networking code due to a stale pointer in fib6_rule_suppress. This flaw is identified as CVE-2026-74581 and affects Red Hat Enterprise Linux 8.4 variants. The vulnerability is rated as having high severity by the source. A security update addressing this issue has been released by Red Hat, and applying the update requires a system reboot.

References

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