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CVE-2026-64507VulnerabilityPublished

Red Hat Security Advisory: kernel security update

Affects Linux kernelSource GCVE Database

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Mentioned vulnerabilities

Not known to be exploited.

Data as of 29 Oct 2026, 08:27 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS
0.2% chance of exploitation in 30 days – higher than 13% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Oct 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 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Product Security Red HatAffected
  • Red Hat
  • Red Hat Enterprise Linux
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)
Fixed in–

AI-suggested

A security update for the kernel packages is available and should be applied promptly. The update includes the necessary fixes for CVE-2026-64507 and CVE-2026-64508. Red Hat recommends rebooting the system after applying the update for the changes to take effect. Users should follow the instructions in the Red Hat advisory and treat all kernel errata as security-relevant.

Description

Red Hat issued a moderate severity security advisory for the Linux kernel addressing two vulnerabilities related to BPF JIT hardening and x86 bug mitigations. The update includes support for hardening against JIT spraying (CVE-2026-64508) and enabling IBPB flush on BPF JIT allocation (CVE-2026-64507). These fixes improve kernel security by mitigating potential attack vectors involving the BPF Just-In-Time compiler. The update requires a system reboot to take effect and is applicable to Red Hat Enterprise Linux 10.0 Extended Update Support and related products.

References

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