Red Hat Security Advisory: kernel security update
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 31 Oct 2026, 11:08 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 26 Aug 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 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.