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read_object_with_reference: don't read beyond the buffer

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Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Martin Koegler 2008-02-18 21:47:52 +01:00 committed by Junio C Hamano
parent e5fc9a0aea
commit 50974ec994
1 changed files with 2 additions and 1 deletions
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3
sha1_file.c
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@ -1943,7 +1943,8 @@ void *read_object_with_reference(const unsigned char *sha1,
}
ref_length = strlen(ref_type);
if (memcmp(buffer, ref_type, ref_length) ||
if (ref_length + 40 > isize ||
memcmp(buffer, ref_type, ref_length) ||
get_sha1_hex((char *) buffer + ref_length, actual_sha1)) {
free(buffer);
return NULL;