From 77a34079d8f3d63b61543bf3af93043f8674e4c4 Mon Sep 17 00:00:00 2001 From: Siddhesh Poyarekar Date: Tue, 3 Aug 2021 21:11:03 +0530 Subject: [PATCH] gaiconf_init: Avoid double-free in label and precedence lists labellist and precedencelist could get freed a second time if there are allocation failures, so set them to NULL to avoid a double-free. Reviewed-by: Arjun Shankar --- sysdeps/posix/getaddrinfo.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c index 838a68f022..43dfc6739e 100644 --- a/sysdeps/posix/getaddrinfo.c +++ b/sysdeps/posix/getaddrinfo.c @@ -2008,6 +2008,7 @@ gaiconf_init (void) l = l->next; } free_prefixlist (labellist); + labellist = NULL; /* Sort the entries so that the most specific ones are at the beginning. */ @@ -2046,6 +2047,7 @@ gaiconf_init (void) l = l->next; } free_prefixlist (precedencelist); + precedencelist = NULL; /* Sort the entries so that the most specific ones are at the beginning. */