CVE-2026-53346

kernel: rust: arm64: set uwtable llvm module flag for CONFIG_UNWIND_TABLES

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Severity

Unknown

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · July 1, 2026

Updated · July 2, 2026

Description

A flaw was found in the Linux kernel. A bug in the Rust compiler's handling of unwind tables for ARM64 architecture can lead to incorrect debugging information for kernel AddressSanitizer (KASAN) constructors. When a specific security feature (CONFIG_UNWIND_PATCH_PAC_INTO_SCS) is enabled, this error causes a mismatch in how instructions are patched during boot. This mismatch results in the system failing to boot, leading to a denial of service.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-125 · Out-of-bounds Read