CVE-2026-89509

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A NULL pointer dereference occurs in the alloc and bind() function within the ionic driver. This happens because the driver was not adapted to the requirements of rdma zalloc drv obj(), which expects drivers implementing counter operations to embed struct rdma counter in a driver-specific struct, register its size via INIT RDMA OBJ SIZE, and provide a counter init callback. When size rdma counter is unset, rdma zalloc drv obj() allocates zero bytes, leading to the crash.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.