Memory Allocation Flaw in Linux Kernel Affecting AMD Graphics Drivers

CVE-2026-53374

What is CVE-2026-53374?

A memory allocation flaw has been identified in the Linux kernel related to the AMD graphics drivers. Specifically, when the GART (Graphics Address Translation) table is allocated, it is not properly zero-initialized. As a result, when the Translation Lookaside Buffer (TLB) is utilized, it may speculatively load uninitialized entries, posing a risk that stale or garbage data could be accessed during subsequent operations. This behavior can lead to incorrect memory references and potential exploitation avenues. To mitigate this risk, the system now incorporates a memory wiping process immediately after allocation to ensure the integrity of the GART table.

References