Linux Kernel CVE-2025-71294

Apply kernel security updates: upgrade to Linux 6.12.75 or later, 6.18.16 or later, 6.19.6 or later, or 7.0 with patch applied. Patch commits are available at https://git.kernel.org/stable/c/276028fd9b60bbcc68796d1124b6b58298f4ca8a and mirror URLs. For systems that cannot immediately patch, mitigate by restricting local user access to affected systems via SELinux or AppArmor policies that prevent non-administrative users from triggering GPU initialization paths; this is a defense-in-depth measure but does not eliminate risk for multi-user systems. Alternatively, disable amdgpu driver loading entirely if GPU acceleration is not required (trade-off: loss of GPU functionality). If SDMA hardware is available and can be enabled in BIOS/UEFI, enabling it may prevent the NULL pointer condition, though this should be verified with your specific AMD GPU model and kernel version.