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33 lines
1.1 KiB
33 lines
1.1 KiB
3 years ago
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commit a5bd2e10e0c25b80286dc36068e22a4cb4893af0
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Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
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Date: Tue Aug 3 21:11:03 2021 +0530
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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
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are allocation failures, so set them to NULL to avoid a double-free.
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Reviewed-by: Arjun Shankar <arjun@redhat.com>
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(cherry picked from commit 77a34079d8f3d63b61543bf3af93043f8674e4c4)
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diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
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index 838a68f0229b5aa8..43dfc6739e350a58 100644
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--- a/sysdeps/posix/getaddrinfo.c
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+++ b/sysdeps/posix/getaddrinfo.c
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@@ -2008,6 +2008,7 @@ gaiconf_init (void)
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l = l->next;
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}
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free_prefixlist (labellist);
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+ labellist = NULL;
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/* Sort the entries so that the most specific ones are at
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the beginning. */
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@@ -2046,6 +2047,7 @@ gaiconf_init (void)
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l = l->next;
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}
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free_prefixlist (precedencelist);
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+ precedencelist = NULL;
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/* Sort the entries so that the most specific ones are at
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the beginning. */
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