VulnerabilityPublished 22 Oct 2026Updated 26 Oct 2026

CVE-2025-22063: kernel security, bug fix, and enhancement update

Affects Linux kernelSource GCVE Database

Not known to be exploited : upgrade to 5.14.0-687.60.1.el9_8 soon.

Data as of 26 Oct 2026, 23:30 UTC

Severity

High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Patch: Available – fixed in 5.14.0-687.60.1.el9_8

Exploitation evidence

Disclosed: evidence found.
CVE published 22 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

almalinux-9

What to do

Upgrade the AlmaLinux to 5.14.0-687.60.1.el9_8.

Patches and advisories

access.redhat.com/errata/RHSA-2026:87805 (opens in a new tab)

Affected software

Product	Affected	Fixed in
AlmaLinux 9kernel	Affected <5.14.0-687.60.1.el9_8	Fixed in 5.14.0-687.60.1.el9_8
AlmaLinux 9kernel-64k	Affected <5.14.0-687.60.1.el9_8	Fixed in 5.14.0-687.60.1.el9_8
AlmaLinux 9kernel-64k-core	Affected <5.14.0-687.60.1.el9_8	Fixed in 5.14.0-687.60.1.el9_8
AlmaLinux 9kernel-64k-debug	Affected <5.14.0-687.60.1.el9_8	Fixed in 5.14.0-687.60.1.el9_8
AlmaLinux 9kernel-64k-debug-core	Affected <5.14.0-687.60.1.el9_8	Fixed in 5.14.0-687.60.1.el9_8
AlmaLinux 9kernel-64k-debug-devel	Affected <5.14.0-687.60.1.el9_8	Fixed in 5.14.0-687.60.1.el9_8

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A patch is available in kernel version 5.14.0-687.60.1.el9_8 and later. Users should apply the update provided by Red Hat Enterprise Linux 9 promptly and reboot the system to ensure the fixes take effect. Red Hat recommends treating all kernel errata as security-relevant and advises against delaying updates to reduce exposure.

Description

A security update for the Linux kernel addresses multiple vulnerabilities including a NULL pointer exception caused by CALIPSO on IPv4 sockets (CVE-2025-22063). The update also fixes other kernel-related security issues and bugs. The affected kernel versions are those prior to 5.14.0-687.60.1.el9_8. Red Hat has released a patch that must be applied and requires a system reboot. The update is rated as having an Important security impact by Red Hat.

Impact

The vulnerabilities fixed include a NULL pointer exception that could potentially cause kernel crashes or denial of service, and other kernel bugs that may affect system stability and security. Red Hat rates the overall security impact of this update as Important, indicating a significant risk if left unpatched. No known exploits in the wild have been reported for these issues at this time.

Summary

This update for the Linux kernel fixes several security vulnerabilities, notably CVE-2025-22063 which is a NULL pointer exception caused by CALIPSO on IPv4 sockets. Additional fixes address other kernel components such as calipso functions for AF_INET sockets, ALSA firmware load teardown, vmxnet3 packet handling, overlay filesystem access checks, and XFS filesystem issues. The update also includes bug fixes and enhancements for kernel stability. The fixed kernel version is 5.14.0-687.60.1.el9_8, with all earlier versions affected. Red Hat Enterprise Linux 9 users are advised to update promptly.

References

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