Improper control of a resource through its lifetime in Linux kernel - CVE-2026-43095
Published: May 7, 2026
Vulnerability identifier: #VU130672
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-43095
CWE-ID: CWE-664
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource lifecycle management in sdca_irq_populate() IRQ handling when tearing down the sound card. A local user can trigger sound card teardown while IRQ handlers still hold references to the card and kcontrols to cause a denial of service.
The issue occurs because IRQs can persist after the sound card is removed, leading to crashes when stale references are used.
Affected software
Linux kernel
How to mitigate CVE-2026-43095
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3