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CVE-2026-53359VulnerabilityPublished Updated

Red Hat Security Advisory: kpatch-patch-4_18_0-477_107_1, kpatch-patch-4_18_0-477_120_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 22 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 official kernel live patch modules (kpatch) for Red Hat Enterprise Linux 8.8 that fix this vulnerability. Users should apply the updated kpatch packages corresponding to their kernel version as detailed in the Red Hat advisory RHSA-2026:43847. Instructions for applying these updates are available at https://access.redhat.com/articles/11258. Since this is a live patch, it can be applied without rebooting the system. No additional mitigation steps are indicated by Red Hat.

Description

A security vulnerability identified as CVE-2026-53359 affects the Red Hat Enterprise Linux kernel version 4.18.0-477.97.1.el8_8. The issue is a use-after-free flaw in the KVM x86 shadow paging implementation caused by an unexpected role. This vulnerability is addressed by a kernel live patch module that can be applied using the kpatch utility. Red Hat has released updated kpatch packages to fix this flaw in multiple kernel patch versions for Red Hat Enterprise Linux 8.8. The vulnerability is rated as important by Red Hat Product Security.

References

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