39 lines
1.7 KiB
Diff
39 lines
1.7 KiB
Diff
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# Prevent gdbm from storing uninitialized memory content
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# to database files. This patch improves security, as the
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# uninitialized memory might contain sensitive informations
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# from other applications.
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# https://bugzilla.redhat.com/show_bug.cgi?id=4457
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# http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=208927
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--- src/falloc.c.zeroheaders 2011-11-11 11:59:11.000000000 +0100
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+++ src/falloc.c 2011-11-14 17:34:32.487604027 +0100
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@@ -255,7 +255,7 @@ push_avail_block (GDBM_FILE dbf)
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/* Split the header block. */
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- temp = (avail_block *) malloc (av_size);
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+ temp = (avail_block *) calloc (1, av_size);
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if (temp == NULL) _gdbm_fatal (dbf, _("malloc error"));
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/* Set the size to be correct AFTER the pop_avail_block. */
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temp->size = dbf->header->avail.size;
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--- src/gdbmopen.c.zeroheaders 2011-11-11 19:39:42.000000000 +0100
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+++ src/gdbmopen.c 2011-11-14 17:33:24.867608650 +0100
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@@ -264,7 +264,7 @@ gdbm_open (const char *file, int block_s
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(dbf->header->block_size - sizeof (hash_bucket))
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/ sizeof (bucket_element) + 1;
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dbf->header->bucket_size = dbf->header->block_size;
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- dbf->bucket = (hash_bucket *) malloc (dbf->header->bucket_size);
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+ dbf->bucket = (hash_bucket *) calloc (1, dbf->header->bucket_size);
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if (dbf->bucket == NULL)
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{
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gdbm_close (dbf);
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@@ -456,7 +456,7 @@ _gdbm_init_cache(GDBM_FILE dbf, size_t s
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for(index = 0; index < size; index++)
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{
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(dbf->bucket_cache[index]).ca_bucket
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- = (hash_bucket *) malloc (dbf->header->bucket_size);
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+ = (hash_bucket *) calloc (1, dbf->header->bucket_size);
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if ((dbf->bucket_cache[index]).ca_bucket == NULL)
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{
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gdbm_errno = GDBM_MALLOC_ERROR;
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