CVE-2024-26649

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: drm/amdgpu: corrige el puntero nulo al cargar el firmware rlc. Si el firmware RLC no es válido debido a un tamaño de encabezado incorrecto, el puntero al firmware rlc se libera en la función amdgpu_ucode_request. Habrá un error de puntero nulo en el uso posterior. Así que omita la validación para solucionarlo.

A vulnerability was found in the drm/amdgpu driver of Linux Kernel, causing null pointer dereference when attempting to load RLC (Run-Length Coding) firmware. This issue arises if the firmware has an incorrect header size, causing premature release of the firmware pointer in amdgpu_ucode_request(), subsequently attempts to use the nullified pointer result in errors.

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix the null pointer when load rlc firmware If the RLC firmware is invalid because of wrong header size, the pointer to the rlc firmware is released in function amdgpu_ucode_request. There will be a null pointer error in subsequent use. So skip validation to fix it.

Alon Zahavi discovered that the NVMe-oF/TCP subsystem in the Linux kernel did not properly validate H2C PDU data, leading to a null pointer dereference vulnerability. A remote attacker could use this to cause a denial of service. Sander Wiebing, Alvise de Faveri Tron, Herbert Bos, and Cristiano Giuffrida discovered that the Linux kernel mitigations for the initial Branch History Injection vulnerability were insufficient for Intel processors. A local attacker could potentially use this to expose sensitive information.