Medium [CVE-2026-89747] Linux kernel tracing: Use-after-free vulnerability during trace_pipe read
This medium-severity Red Hat Linux advisory covers CVE-2026-89747.
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Summary
A flaw was found in the Linux kernel's tracing component. A local attacker could exploit a use-after-free vulnerability, a type of memory corruption, by manipulating the `trace_pipe` functionality.
This occurs when the system attempts to read from memory that has already been released, leading to unpredictable behavior. Successful exploitation could result in system instability or a denial of service.
Red Hat severity: Moderate — CVSS 4.1 (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-825.
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 20 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 20 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 20 minutes ago·verify at source
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