Null Pointer Dereference in Linux Kernel Affecting Memory Management

CVE-2026-53334

What is CVE-2026-53334?

In the Linux kernel, a vulnerability exists in the DAMON_RECLAIM and DAMON_LRU_SORT functionalities that may lead to a null pointer dereference if memory allocation for the damon_ctx object fails. This issue is hypothesized to occur infrequently, as the necessary allocations tend to be minimal for standard setups. However, should an allocation failure occur, it could lead to serious errors in code execution by permitting dereferencing of a NULL pointer. To mitigate this risk, the code will now return an error instead of proceeding with a NULL context, thus enhancing the stability and robustness of memory management in the Linux kernel.

References