Red Hat Security Advisory: kernel security update
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 29 Oct 2026, 08:27 UTC
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
Disclosed: evidence found.
CVE published 1 Sep 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 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Product Security Red Hat | Affected
| 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.