VulnerabilityPublished 17 Sep 2026Updated 20 Oct 2026

CVE-2026-92484: Linux kernel · cxl/region: Fix use-after-free in find_pos_and_ways() error path

Affects Linux kernelSource GCVE Database

Not known to be exploited.

Data as of 26 Oct 2026, 17:16 UTC

Severity

Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 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.

What to do

Affected software

Product	Affected	Fixed in
Ubuntu 26.04 LTSlinux`pkg:deb/ubuntu/linux?arch=source&distro=resolute`Other threats	Affected 6.17.0-5.5 – 7.0.0-38.38 23 affected builds	Fixed in–
Ubuntu 26.04 LTSlinux-aws`pkg:deb/ubuntu/linux-aws?arch=source&distro=resolute`Other threats	Affected 6.17.0-1002.2 – 7.0.0-1014.14 15 affected builds	Fixed in–
Ubuntu 26.04 LTSlinux-azure`pkg:deb/ubuntu/linux-azure?arch=source&distro=resolute`Other threats	Affected 6.17.0-1003.3 – 7.0.0-1017.17 15 affected builds	Fixed in–
Ubuntu 26.04 LTSlinux-azure-fde`pkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resolute`Other threats	Affected 7.0.0-1003.3 – 7.0.0-1016.16 9 affected builds	Fixed in–
Ubuntu 26.04 LTSlinux-gcp`pkg:deb/ubuntu/linux-gcp?arch=source&distro=resolute`Other threats	Affected 6.17.0-1002.2 – 7.0.0-1014.14 13 affected builds	Fixed in–
Ubuntu 26.04 LTSlinux-gke`pkg:deb/ubuntu/linux-gke?arch=source&distro=resolute`Other threats	Affected 7.0.0-1002.3 – 7.0.0-1008.9 6 affected builds	Fixed in–

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

AI-suggested

A fix has been implemented in the Linux kernel to address this use-after-free vulnerability by changing the order of reference release and error logging. Users should apply the official kernel updates that include this fix. Since this is a kernel-level issue, updating to a patched kernel version is the recommended remediation. Patch status is not explicitly stated in the provided data; therefore, users should consult the vendor or distribution advisory for the exact fixed versions and update accordingly.

Description

A use-after-free vulnerability was identified and resolved in the Linux kernel's cxl/region component, specifically in the find_pos_and_ways() error path. The issue occurs because the error path releases its reference to a switch decoder before logging an error message that includes the decoder's name. If this released reference is the last one, the decoder may be freed before the error message accesses its name, leading to a use-after-free condition. The fix involves dropping the reference after the error message is reported.

Impact

This vulnerability could lead to use-after-free conditions in the kernel, potentially causing system instability or crashes. The information does not specify exploitation in the wild or further impact such as privilege escalation or code execution. The severity is assessed as medium based on the nature of the flaw and its potential to affect kernel stability.

Summary

The Linux kernel contained a use-after-free vulnerability in the cxl/region subsystem within the find_pos_and_ways() error handling path. The vulnerability arises when the error path releases its reference to a switch decoder prior to logging an error message that references the decoder's name. If the released reference is the last one, the decoder object can be freed prematurely, causing the error message to access freed memory. This flaw was addressed by modifying the code to drop the reference only after the error message has been logged, preventing use-after-free.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 24 Oct 2026, 22:59 UTC

Technical details

References

Community reviews

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