Red Hat Security Advisory: kernel-rt security update
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 29 Oct 2026, 10:37 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 17 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
Public exploit code: GitHub proofs of concept
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), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
AI-suggested
Red Hat has released an official security update for the kernel-rt package that addresses this vulnerability. Users should apply the update for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions and Extended Life Cycle 9.2 as soon as possible and reboot the system to activate the fix. Red Hat recommends treating all kernel errata as security-relevant and advises against delaying updates.
Description
A security update for the Red Hat kernel-rt package addresses a vulnerability in the kernel's network scheduler action API (act_api). The flaw involves improper handling of action lifecycle freeing, which has been corrected by using RCU with deferred freeing. This update is rated as important by Red Hat and affects Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. The system must be rebooted after applying the update for the fix to take effect.