CVE-2026-43459

A flaw was found in the Linux kernel's sound subsystem (ASoC). When a sound card is unbound while an audio stream is active, a timing issue can lead to a use-after-free vulnerability. This occurs because certain resources are freed before all pending operations are completed. A local attacker could exploit this flaw to cause a system crash, leading to a denial of service.

Red Hat acknowledges the upstream Linux kernel correction for «ASoC» as described in COMMENT_ZERO. Fixes are delivered through standard kernel errata for supported products. Operational exposure depends on whether this subsystem or driver is active in your configuration.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.