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Fix bug #67326 fileinfo: cdf_read_short_sector insufficient boundary check

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Upstream fix 6d209c1c48.patch
Only revelant part applied
This commit is contained in:
Remi Collet 2014-06-03 11:05:00 +02:00 committed by Stanislav Malyshev
parent 2326401fc1
commit 52de149ebc
1 changed files with 2 additions and 2 deletions
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4
ext/fileinfo/libmagic/cdf.c
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@ -365,10 +365,10 @@ cdf_read_short_sector(const cdf_stream_t *sst, void *buf, size_t offs,
size_t ss = CDF_SHORT_SEC_SIZE(h);
size_t pos = CDF_SHORT_SEC_POS(h, id);
assert(ss == len);
if (pos > CDF_SEC_SIZE(h) * sst->sst_len) {
if (pos + len > CDF_SEC_SIZE(h) * sst->sst_len) {
DPRINTF(("Out of bounds read %" SIZE_T_FORMAT "u > %"
SIZE_T_FORMAT "u\n",
pos, CDF_SEC_SIZE(h) * sst->sst_len));
pos + len, CDF_SEC_SIZE(h) * sst->sst_len));
return -1;
}
(void)memcpy(((char *)buf) + offs,