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
Ubuntu
linux-oem-6.17 (Ubuntu package)
Ubuntu
linux-oem-6.17 (Ubuntu package)
How to mitigate CVE-2026-43095
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux-oem-6.17 (Ubuntu package) - update to 6.17.0-1033.33
linux-oem-6.17 (Ubuntu package) - update to 6.17.0-1033.33