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GNU C Library master sources branch master updated. glibc-2.27.9000-194-gbdc3009


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The branch, master has been updated
       via  bdc3009b8ff0effdbbfb05eb6b10966753cbf9b8 (commit)
      from  f9555d73121bd12f6fd50545868e6a33096b8164 (commit)

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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=bdc3009b8ff0effdbbfb05eb6b10966753cbf9b8

commit bdc3009b8ff0effdbbfb05eb6b10966753cbf9b8
Author: Francois Goichon <fgoichon@google.com>
Date:   Wed Mar 14 16:25:57 2018 -0400

    malloc: harden removal from unsorted list
    
    * malloc/malloc.c (_int_malloc): Added check before removing from
    unsorted list.

diff --git a/malloc/malloc.c b/malloc/malloc.c
index e229181..9614954 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -3775,6 +3775,8 @@ _int_malloc (mstate av, size_t bytes)
             }
 
           /* remove from unsorted list */
+          if (__glibc_unlikely (bck->fd != victim))
+            malloc_printerr ("malloc(): corrupted unsorted chunks 3");
           unsorted_chunks (av)->bk = bck;
           bck->fd = unsorted_chunks (av);
 

-----------------------------------------------------------------------

Summary of changes:
 malloc/malloc.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)


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