File gaiconf-init-double-free.patch of Package glibc

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File gaiconf-init-double-free.patch of Package glibc (Revision cf79a1c9661f46fa4c0f10bc8ebeda61)

Currently displaying revision cf79a1c9661f46fa4c0f10bc8ebeda61 , Show latest

From 77a34079d8f3d63b61543bf3af93043f8674e4c4 Mon Sep 17 00:00:00 2001
From: Siddhesh Poyarekar <siddhesh@sourceware.org>
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 <arjun@redhat.com>
---
 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.  */
-- 
2.32.0

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File gaiconf-init-double-free.patch of Package glibc (Revision cf79a1c9661f46fa4c0f10bc8ebeda61)

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