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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 10 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 AppStream (v. 10)
  • Red Hat Enterprise Linux BaseOS (v. 10)
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
Fixed in–

AI-suggested

Red Hat has released updated kernel packages for Red Hat Enterprise Linux 10 that address this vulnerability. Users should apply the provided kernel update and reboot their systems to activate the fix. Red Hat strongly advises against delaying this update to avoid exposure to potential risks.

Description

A security update for the Linux kernel in Red Hat Enterprise Linux 10 addresses a vulnerability identified as CVE-2026-74480. The issue involves the network bridge component and specifically the handling of fast-leave behavior after deleting a port group. Red Hat has rated this update as Important and recommends applying the update and rebooting the system to ensure the fix takes effect.

References

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