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CVE-2026-53359VulnerabilityPublished Updated

Red Hat Security Advisory: kpatch-patch-4_18_0-553_109_1, kpatch-patch-4_18_0-553_125_1, kpatch-patch-4_18_0-553_53_1

Affects Red HatSource GCVE Database

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Not known to be exploited.

Data as of 30 Oct 2026, 11:52 UTC

Severity
High

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS
1.3% chance of exploitation in 30 days – higher than 71% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  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), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 24 Oct 2026.

What to do

AI-suggested

Red Hat has released updated kpatch packages for Red Hat Enterprise Linux 8 that fix this vulnerability. Users should apply the provided kpatch updates for kernel-4.18.0-553.53.1.el8_10 as detailed in the Red Hat advisory (RHSA-2026:44004). Instructions for applying the update are available at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated or required beyond applying the official patch.

Description

A security vulnerability identified as CVE-2026-53359 affects the Red Hat Enterprise Linux 8 kernel, specifically the kpatch live patch module for kernel version 4.18.0-553.53.1.el8_10. The flaw is a use-after-free issue in the KVM x86 shadow paging implementation caused by an unexpected role. Red Hat has issued a security advisory with updated kpatch packages to address this vulnerability.

References

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