1 Source:

     2 https://bugzilla.redhat.com/show_bug.cgi?id=1174851

     3 Info:

     4 http://www.ocert.org/advisories/ocert-2014-011.html

     5 

     6 --- a/extract.c	2009-03-14 02:32:52.000000000 +0100

     7 +++ b/extract.c	2014-12-05 22:43:13.000000000 +0100

     8 @@ -2221,10 +2234,17 @@ static int test_compr_eb(__G__ eb, eb_si

     9      if (compr_offset < 4)                /* field is not compressed: */

    10          return PK_OK;                    /* do nothing and signal OK */

    11  

    12 +    /* Return no/bad-data error status if any problem is found:

    13 +     *    1. eb_size is too small to hold the uncompressed size

    14 +     *       (eb_ucsize).  (Else extract eb_ucsize.)

    15 +     *    2. eb_ucsize is zero (invalid).  2014-12-04 SMS.

    16 +     *    3. eb_ucsize is positive, but eb_size is too small to hold

    17 +     *       the compressed data header.

    18 +     */

    19      if ((eb_size < (EB_UCSIZE_P + 4)) ||

    20 -        ((eb_ucsize = makelong(eb+(EB_HEADSIZE+EB_UCSIZE_P))) > 0L &&

    21 -         eb_size <= (compr_offset + EB_CMPRHEADLEN)))

    22 -        return IZ_EF_TRUNC;               /* no compressed data! */

    23 +     ((eb_ucsize = makelong( eb+ (EB_HEADSIZE+ EB_UCSIZE_P))) == 0L) ||

    24 +     ((eb_ucsize > 0L) && (eb_size <= (compr_offset + EB_CMPRHEADLEN))))

    25 +        return IZ_EF_TRUNC;             /* no/bad compressed data! */

    26  

    27      if (

    28  #ifdef INT_16BIT