NULL pointer dereference in Linux kernel - CVE-2026-64488
Published: July 27, 2026
Vulnerability identifier: #VU139449
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-2026-64488
CWE-ID: CWE-476
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 a NULL pointer dereference in sound/aoa/fabrics/layout.c when handling control creation failures in layout_attached_codec(). A local user can trigger a memory allocation failure that leads to dereferencing a NULL control pointer to cause a denial of service.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-64488
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.100-1
linux (Debian package) - update to 6.12.100-1
External References
- https://git.kernel.org/stable/c/2ee9c46fd2dcd529cef18e37636ee12f5c3dbedd
- https://git.kernel.org/stable/c/8df560fefe6fed6a20b7e06720eeaeccec349ac0
- https://git.kernel.org/stable/c/b0154ebc6dc552c389a574b1e221d728e10346e7
- https://git.kernel.org/stable/c/d62624fe256b2d0d13454c78cbfc70ff5d954dc7
- https://git.kernel.org/stable/c/d73067e2bbf3775a495d9f38e38d0a3cf53ee790
- https://git.kernel.org/stable/c/e47f2a341adbac001b6f5d0211b0cd1c1668637b
- https://git.kernel.org/stable/c/e5e8c4508d95af82f9b4d065f658e5476a8e9bc8
- https://git.kernel.org/stable/c/fd786466889e4a6e6de0f4462bd0068edea63960