NULL pointer dereference in Linux kernel - CVE-2026-43436
Published: May 8, 2026
Vulnerability identifier: #VU130752
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-43436
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local attacker to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in scarlett2_find_fc_interface() in the ALSA usb-audio driver when parsing a malformed USB descriptor for Scarlett2 mixer interfaces. A local attacker can provide a specially crafted USB descriptor to cause a denial of service.
How to mitigate CVE-2026-43436
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/3d4f23885e4b90347c9a1d779af6e79a99b5172a
- https://git.kernel.org/stable/c/3d542cf3c4c854cdf5d58049771f68926b9eb2b9
- https://git.kernel.org/stable/c/b014cc945baba75816cda0cf8934be87c9ed4947
- https://git.kernel.org/stable/c/b267255c15d2a5b90c4e926146aa155e5161e264
- https://git.kernel.org/stable/c/c5c5a6c53cf3b658f1d4512dfa61f3cd25bc34ba
- https://git.kernel.org/stable/c/df1d8abf36ca3681c21a6809eaa9a1e01ef897a6