mirror of
git://slackware.nl/current.git
synced 2024-12-30 10:24:23 +01:00
25 lines
1.3 KiB
Diff
25 lines
1.3 KiB
Diff
diff --git a/extract.c b/extract.c
|
|
index c741b5f..e4a4c7b 100644
|
|
--- a/extract.c
|
|
+++ b/extract.c
|
|
@@ -2240,10 +2240,17 @@ static int test_compr_eb(__G__ eb, eb_size, compr_offset, test_uc_ebdata)
|
|
if (compr_offset < 4) /* field is not compressed: */
|
|
return PK_OK; /* do nothing and signal OK */
|
|
|
|
+ /* Return no/bad-data error status if any problem is found:
|
|
+ * 1. eb_size is too small to hold the uncompressed size
|
|
+ * (eb_ucsize). (Else extract eb_ucsize.)
|
|
+ * 2. eb_ucsize is zero (invalid). 2014-12-04 SMS.
|
|
+ * 3. eb_ucsize is positive, but eb_size is too small to hold
|
|
+ * the compressed data header.
|
|
+ */
|
|
if ((eb_size < (EB_UCSIZE_P + 4)) ||
|
|
- ((eb_ucsize = makelong(eb+(EB_HEADSIZE+EB_UCSIZE_P))) > 0L &&
|
|
- eb_size <= (compr_offset + EB_CMPRHEADLEN)))
|
|
- return IZ_EF_TRUNC; /* no compressed data! */
|
|
+ ((eb_ucsize = makelong( eb+ (EB_HEADSIZE+ EB_UCSIZE_P))) == 0L) ||
|
|
+ ((eb_ucsize > 0L) && (eb_size <= (compr_offset + EB_CMPRHEADLEN))))
|
|
+ return IZ_EF_TRUNC; /* no/bad compressed data! */
|
|
|
|
method = makeword(eb + (EB_HEADSIZE + compr_offset));
|
|
if ((method == STORED) && (eb_size != compr_offset + EB_CMPRHEADLEN + eb_ucsize))
|