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Message-ID: <20240125070950.28673-1-ismael@iodev.co.uk>
Date: Thu, 25 Jan 2024 08:09:49 +0100
From: Ismael Luceno <ismael@...ev.co.uk>
To: musl@...ts.openwall.com
Cc: Rich Felker <dalias@...c.org>,
Ismael Luceno <ismael@...ev.co.uk>
Subject: [PATCH] fix avoidable segfault in catclose
catclose may be called with an invalid argument, particularly -1 may be
returned by catopen if there's an error.
Signed-off-by: Ismael Luceno <ismael@...ev.co.uk>
---
src/locale/catclose.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/locale/catclose.c b/src/locale/catclose.c
index 54e24dd2163b..af959a58dfb5 100644
--- a/src/locale/catclose.c
+++ b/src/locale/catclose.c
@@ -8,6 +8,8 @@
int catclose (nl_catd catd)
{
+ if (catd == (nl_catd)-1)
+ return -1;
char *map = (char *)catd;
munmap(map, V(map+8)+20);
return 0;
--
2.43.0
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