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path: root/unzip/unzip-6.0-overflow.patch
blob: 1750796e0bd116d10764cfd81e0d42c1a2140dd2 (plain)
    1 diff --git a/extract.c b/extract.c
    2 index a0a4929..9ef80b3 100644
    3 --- a/extract.c
    4 +++ b/extract.c
    5 @@ -2214,6 +2214,7 @@ static int test_compr_eb(__G__ eb, eb_size, compr_offset, test_uc_ebdata)
    6      ulg eb_ucsize;
    7      uch *eb_ucptr;
    8      int r;
    9 +    ush method;
   10  
   11      if (compr_offset < 4)                /* field is not compressed: */
   12          return PK_OK;                    /* do nothing and signal OK */
   13 @@ -2223,6 +2224,12 @@ static int test_compr_eb(__G__ eb, eb_size, compr_offset, test_uc_ebdata)
   14           eb_size <= (compr_offset + EB_CMPRHEADLEN)))
   15          return IZ_EF_TRUNC;               /* no compressed data! */
   16  
   17 +    method = makeword(eb + (EB_HEADSIZE + compr_offset));
   18 +    if ((method == STORED) && (eb_size - compr_offset != eb_ucsize))
   19 +        return PK_ERR;            /* compressed & uncompressed
   20 +                                   * should match in STORED
   21 +                                   * method */
   22 +
   23      if (
   24  #ifdef INT_16BIT
   25          (((ulg)(extent)eb_ucsize) != eb_ucsize) ||

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