CVE-2024-50016: 
Linux Kernel vulnerability analysis and mitigation

In the Linux kernel, a vulnerability (CVE-2024-50016) was discovered in the AMD display driver component. The issue involves potential integer overflow conditions in the linkdpcts functionality. The vulnerability was disclosed on October 21, 2024, and affects Linux kernel versions up to 6.6.55 and versions from 6.7 up to 6.10.14 (NVD).

The vulnerability stems from two integer overflow issues in the AMD display driver. First, the samplingrate variable was defined as uint8t but was being assigned an unsigned int value, which could lead to overflow. Second, the LINKQUALPATTERN_SET field, which has a size of 2 bits, could be assigned values greater than its maximum capacity of 4. The vulnerability has been assigned a CVSS v3.1 base score of 5.5 (Medium) with vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (NVD).

The vulnerability could lead to integer overflow conditions in the AMD display driver component. While there are no reported impacts on confidentiality or integrity, the vulnerability could potentially affect system availability through memory corruption or system crashes (NVD).

The vulnerability has been patched by changing the samplingrate variable type to uint32t and adding a boundary check for LINKQUALPATTERNSET values. The fix ensures that LINKQUALPATTERNSET is only assigned values less than or equal to PHYTESTPATTERNENDDP11. Users should update to Linux kernel version 6.6.55 or later, or apply the appropriate backported patches (Kernel Patch).