diff options
| author | Ed Maste <emaste@FreeBSD.org> | 2026-05-26 13:24:36 +0000 |
|---|---|---|
| committer | Ed Maste <emaste@FreeBSD.org> | 2026-05-26 19:18:56 +0000 |
| commit | b9d16b7fd2fa6bc4b3e8364804cbdc1b76ebe8a5 (patch) | |
| tree | 7d5a87bf19db2a78fdd60d8e72481ffce6347761 /sys/kern | |
| parent | c564074c9aaa8a3f9273de3cb802edcb3e2e2a40 (diff) | |
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/kern_sig.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c index 9be7c82ee98b..e48997ed966a 100644 --- a/sys/kern/kern_sig.c +++ b/sys/kern/kern_sig.c @@ -2038,6 +2038,16 @@ kern_sigqueue(struct thread *td, pid_t pid, int signumf, union sigval *value) if (pid <= 0) return (EINVAL); + /* + * A process in capability mode can send signals only to itself. + */ + if (pid != td->td_proc->p_pid) { + if (CAP_TRACING(td)) + ktrcapfail(CAPFAIL_SIGNAL, &signum); + if (IN_CAPABILITY_MODE(td)) + return (ECAPMODE); + } + if ((signumf & __SIGQUEUE_TID) == 0) { if ((p = pfind_any(pid)) == NULL) return (ESRCH); |