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CVE-2026-74480VulnerabilityPublished 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 29 Oct 2026, 08:27 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS
0.5% chance of exploitation in 30 days – higher than 47% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 Sep 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 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Product Security Red HatAffected
  • Red Hat
  • Red Hat Enterprise Linux
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)
  • x86_64
Fixed in–

AI-suggested

Red Hat has released an official kernel update that addresses this vulnerability. Users should apply the updated kernel packages provided in Red Hat Enterprise Linux 8.6 Extended Life Cycle Long Life and AUS variants. A system reboot is required for the update to take effect. Red Hat recommends treating all kernel errata as security-relevant and advises against delaying updates to avoid exposure.

Description

A security vulnerability (CVE-2026-74480) exists in the Linux kernel's network bridge component, specifically related to the fast-leave behavior after deleting a port group. This issue affects Red Hat Enterprise Linux 8.6 variants. Red Hat has issued a security advisory and released an updated kernel package to address this vulnerability. The update requires a system reboot to take effect. The vulnerability is rated as having an Important security impact by Red Hat, and users are strongly advised to apply the update promptly.

References

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