CVE-2026-80662

CVE-2026-80662 affects the CXL subsystem in the Linux kernel . The root cause is that CXL_HEADERLOG_SIZE was defined as SZ_512 (512 bytes), eight times the actual 64-byte on-device Header Log size in the CXL r4.0 RAS Capability Structure. This caused header_log_copy() to overread the 88-byte ioma...