On Tue, 28 Jul 2026 10:11:20 +0800, Jinjie Ruan wrote:
> Recently, a security issue related to orig_x0 was discovered and fixed
> in arm64, but there are still no test cases covering it. Seccomp,
> tracepoints, and audit can observe a stale value for x0 after a ptracer
> or SECCOMP_RET_TRACE modifies x0.
>
> As Kees suggested, this series adds two kselftests for arm64 that validate
> the orig_x0 re-synchronisation fix in ptrace, the first one is for ptrace
> update, the second one is for SECCOMP_RET_TRACE update.
>
> [...]
Applied to arm64 (for-next/selftests), thanks!
[1/2] kselftest/arm64: Add seccomp ptrace x0 bypass test
https://git.kernel.org/arm64/c/2fcbc4adf997
[2/2] kselftest/arm64: Add testcase for SECCOMP_RET_TRACE orig_x0 bypass
https://git.kernel.org/arm64/c/21e37da12071
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
