NULL pointer dereference in Linux kernel - CVE-2026-64478
Published: July 27, 2026
Vulnerability identifier: #VU139456
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-2026-64478
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to cause a denial of service.
The vulnerability exists due to a null pointer dereference in snd_dualsense_ih_match() when handling repeated device disconnect and reconnect events. A local attacker can trigger a controller disconnect race to cause a denial of service.
The issue can occur when a weak physical connection causes rapid hotplug activity during USB device teardown.
Affected software
Linux kernel
How to mitigate CVE-2026-64478
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/4246dd043b7a4f8e3bc1d2896e81d11220610eda
- https://git.kernel.org/stable/c/4566bf8ae9dbfe81bdc2ff1702d59db8a233b06e
- https://git.kernel.org/stable/c/662a1d7b5affc424ea4f4bc20dd99be29e687886
- https://git.kernel.org/stable/c/7693c0cc415f3a16a7a3355f245474a5e661be4e
- https://git.kernel.org/stable/c/a263eb12cbe2e208e6e637df0f9b0be9a484158e
- https://git.kernel.org/stable/c/a47ecd904c51ae6a42957feb3cf2f4266adee2e5
- https://git.kernel.org/stable/c/c1da6d3f45036fa63672ee04ad97cb526b40b987
- https://git.kernel.org/stable/c/e4c66a149c408e44e60bfec3fabf08b6b7abbc60