CVE-2026-53032

A flaw was found in the Linux kernel's Berkeley Packet Filter (BPF) subsystem. This vulnerability occurs in the map_kptr_match_type function when a scalar register is stored into a kernel pointer (kptr) slot. Due to an incorrect order of checks, the system attempts to access a null pointer, specifically a BPF Type Format (BTF) definition that does not exist for scalar registers. This null pointer dereference can lead to a system crash, resulting in a Denial of Service (DoS).

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.