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[PATCH] hurd: '_hurd_raise_signal' checks signal number is valid
From: |
Ludovic Courtès |
Subject: |
[PATCH] hurd: '_hurd_raise_signal' checks signal number is valid |
Date: |
Tue, 13 Oct 2020 23:16:57 +0200 |
Previously, 'pthread_kill (pthread_self (), -1)' would wrongfully
succeed:
https://lists.gnu.org/archive/html/guix-devel/2020-10/msg00152.html
Reported-by: Jan Nieuwenhuizen <janneke@gnu.org>
---
hurd/hurd-raise.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hurd/hurd-raise.c b/hurd/hurd-raise.c
index d53fd417d2..58b4ffcc83 100644
--- a/hurd/hurd-raise.c
+++ b/hurd/hurd-raise.c
@@ -28,6 +28,9 @@ int
_hurd_raise_signal (struct hurd_sigstate *ss,
int signo, const struct hurd_signal_detail *detail)
{
+ if (signo < 1 || signo >= _NSIG)
+ return EINVAL;
+
if (ss == NULL)
{
ss = _hurd_self_sigstate ();
--
2.28.0