git: 8666a62872de - releng/15.1 - kern: fix auditing of ptrace(2) syscall requests

The branch releng/15.1 has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=8666a62872def3356d42de5632f47cd33a804363

commit 8666a62872def3356d42de5632f47cd33a804363
Author:     Kyle Evans <kevans@FreeBSD.org>
AuthorDate: 2026-06-25 17:02:47 +0000
Commit:     Mark Johnston <markj@FreeBSD.org>
CommitDate: 2026-06-29 19:16:41 +0000

    kern: fix auditing of ptrace(2) syscall requests
    
    `error` here is the return value of syscall_thread_enter() rather than
    the syscall itself, so the committed audit records do not reflect
    reality.  This is less harmful than them recording an error when the
    operation actually succeeded, but it could still possibly be used to
    throw off IDS techniques with things like bsmtrace.
    
    Approved by:    so
    Security:       FreeBSD-SA-26:45.audit
    Security:       CVE-2026-49426
    Reviewed by:    des, kib, markj, csjp
    Differential Revision:  https://reviews.freebsd.org/D57847
---
 sys/kern/kern_sig.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c
index e48997ed966a..fed5b62ee1c7 100644
--- a/sys/kern/kern_sig.c
+++ b/sys/kern/kern_sig.c
@@ -2766,7 +2766,7 @@ ptrace_syscallreq(struct thread *td, struct proc *p,
 	td->td_errno = nerror;
 
 	if (audited)
-		AUDIT_SYSCALL_EXIT(error, td);
+		AUDIT_SYSCALL_EXIT(tsr->ts_ret.sr_error, td);
 	if (!sy_thr_static)
 		syscall_thread_exit(td, se);
 }