Medium [CVE-2026-80952] Linux kernel: Information leak and Use-After-Free in i3c master device unregistration
This medium-severity Red Hat Linux advisory covers CVE-2026-80952 affecting Red Hat OpenShift Container Platform 4.
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Summary
A flaw was found in the Linux kernel's i3c master component. During device unregistration, a race condition can occur where the device descriptor is prematurely cleared.
This can lead to an information leak, exposing kernel stack contents in the generated modalias. Additionally, this flaw could result in a potential use-after-free vulnerability, which might allow an attacker to execute arbitrary code or cause a denial of service.
Red Hat severity: Moderate — CVSS 6 (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:H/A:H). Weakness: CWE-824.
Affected Red Hat products: Red Hat OpenShift Container Platform 4. Red Hat does not currently list a fixing RHSA for this CVE.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 29 minutes ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 29 minutes ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 29 minutes ago·verify at source
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