CVE-2026-23114

A flaw was found in the Linux kernel's arm64 floating-point/SIMD state management. On systems with SVE but without SME support, a ptrace write to the NT_ARM_SVE regset can leave the tracee in an inconsistent state where SVE data is stored but the TIF_SVE flag is not set. This triggers a kernel warning in fpsimd_restore_current_state(), though the function self-corrects by setting the flag before any observable issue occurs.

This is a code quality issue that triggers a kernel warning but has no functional impact. The state inconsistency is automatically corrected by fpsimd_restore_current_state() before it can affect program execution. The fix ensures consistent flag setting during ptrace SVE register writes on arm64 systems without SME.

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.