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gaiconf_init: Avoid double-free in label and precedence lists

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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 <arjun@redhat.com>
(cherry picked from commit 77a34079d8)
This commit is contained in:
Siddhesh Poyarekar 2021-08-03 21:11:03 +05:30
parent 3a48da47a9
commit a5bd2e10e0
1 changed files with 2 additions and 0 deletions
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2
sysdeps/posix/getaddrinfo.c
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@ -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. */