The BUG_ON(axp->pid_count >= AUDIT_AUX_PIDS) check in audit_signal_info_syscall() will panic the kernel if the signal target pid array overflows, which is too severe for this situation.
Replace it with a WARN_ON_ONCE() and return of -EINVAL, instead. Signed-off-by: Ricardo Robaina <[email protected]> --- kernel/auditsc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 6610e667c728..2b9ce0b52511 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -2712,7 +2712,8 @@ int audit_signal_info_syscall(struct task_struct *t) axp->d.next = ctx->aux_pids; ctx->aux_pids = (void *)axp; } - BUG_ON(axp->pid_count >= AUDIT_AUX_PIDS); + if (WARN_ON_ONCE(axp->pid_count >= AUDIT_AUX_PIDS)) + return -EINVAL; axp->target_pid[axp->pid_count] = task_tgid_nr(t); axp->target_auid[axp->pid_count] = audit_get_loginuid(t); -- 2.53.0
