Red Hat Security Advisory: kernel security, bug fix, and enhancement update
Affects Red Hat kernel security,Source 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 4 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 update for the kernel packages in RHEL 7 Extended Lifecycle Support that includes the fix for CVE-2026-74480. Users should apply the update promptly following Red Hat's guidance and reboot their systems to activate the patch. Red Hat recommends treating all kernel errata as security-relevant and advises against delaying updates to avoid exposure to known vulnerabilities.
Description
A security update for the Linux kernel in Red Hat Enterprise Linux 7 Extended Lifecycle Support addresses a vulnerability identified as CVE-2026-74480. The issue involves the network bridge component where fast-leave behavior is stopped after deleting a port group. Additionally, a bug fix addresses a NULL pointer dereference in nft_rbtree_lookup. The update is rated as important by Red Hat and requires a system reboot to take effect.