CVE-2026-53346

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

Description A bug in the rustc compiler causes the -Cforce-unwind-tables=y flag to emit the uwtable annotation only for functions and not for the module. Consequently, compiler-generated functions, such as asan.module ctor, do not receive the uwtable annotation. When CONFIG UNWIND PATCH PAC INTO SCS is enabled, this results in incorrect dwarf information for kasan constructors, leading the SCS boot patching code to patch the constructor illegally. Specifically, the paciasp instruction is patched while the autiasp instruction is not, causing a system crash during boot when the constructor is called via the do ctors() function in the init/main.c file.

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