Medium [CVE-2026-80981] Linux kernel: Use-after-free in net/smc component can lead to memory corruption
This medium-severity Red Hat Linux advisory covers CVE-2026-80981 affecting Red Hat OpenShift Container Platform 4.
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Summary
A flaw was found in the Linux kernel's net/smc component. A local attacker could exploit a use-after-free vulnerability in the `smc_llc_srv_add_link()` function, where a freed memory region is improperly accessed.
This can lead to memory corruption and potentially result in a denial of service (DoS). Red Hat severity: Moderate — CVSS 5.2 (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:H).
Weakness: CWE-825. 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 17 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 17 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 17 minutes ago·verify at source
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