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    Contents of /trunk/ghostscript-gpl/patches/ghostscript-gpl-8.71-jbig2dec-nullderef.patch

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    Revision 1374 - (show annotations) (download)
    Wed Jun 29 12:17:32 2011 UTC (12 years, 10 months ago) by niro
    File size: 1787 byte(s) 
    added fedora patches
    1 diff -up ghostscript-8.71/jbig2dec/jbig2_symbol_dict.c.jbig2dec-nullderef ghostscript-8.71/jbig2dec/jbig2_symbol_dict.c
    2 --- ghostscript-8.71/jbig2dec/jbig2_symbol_dict.c.jbig2dec-nullderef 2009-05-29 07:48:44.000000000 +0100
    3 +++ ghostscript-8.71/jbig2dec/jbig2_symbol_dict.c 2010-02-17 12:06:42.040614797 +0000
    4 @@ -367,6 +367,11 @@ jbig2_decode_symbol_dict(Jbig2Ctx *ctx,
    5 memcpy(region_params.gbat, params->sdat, sdat_bytes);
    6
    7 image = jbig2_image_new(ctx, SYMWIDTH, HCHEIGHT);
    8 + if (image == NULL) {
    9 + jbig2_error(ctx, JBIG2_SEVERITY_FATAL, segment->number,
    10 + "failed to allocate image storage");
    11 + return NULL;
    12 + }
    13
    14 code = jbig2_decode_generic_region(ctx, segment, &region_params,
    15 as, image, GB_stats);
    16 @@ -517,6 +522,11 @@ jbig2_decode_symbol_dict(Jbig2Ctx *ctx,
    17 ID, RDX, RDY);
    18
    19 image = jbig2_image_new(ctx, SYMWIDTH, HCHEIGHT);
    20 + if (image == NULL) {
    21 + jbig2_error(ctx, JBIG2_SEVERITY_FATAL, segment->number,
    22 + "failed to allocate image storage");
    23 + return NULL;
    24 + }
    25
    26 /* Table 18 */
    27 rparams.GRTEMPLATE = params->SDRTEMPLATE;
    28 @@ -635,6 +645,16 @@ jbig2_decode_symbol_dict(Jbig2Ctx *ctx,
    29 for (j = HCFIRSTSYM; j < NSYMSDECODED; j++) {
    30 Jbig2Image *glyph;
    31 glyph = jbig2_image_new(ctx, SDNEWSYMWIDTHS[j], HCHEIGHT);
    32 + if (glyph == NULL) {
    33 + jbig2_error(ctx, JBIG2_SEVERITY_FATAL, segment->number,
    34 + "error allocating image storage for glyph");
    35 + while (--j >= HCFIRSTSYM) {
    36 + jbig2_image_release(ctx, SDNEWSYMS->glyphs[j]);
    37 + SDNEWSYMS->glyphs[j] = NULL;
    38 + }
    39 + jbig2_image_release(ctx, image);
    40 + return NULL;
    41 + }
    42 jbig2_image_compose(ctx, glyph, image,
    43 -x, 0, JBIG2_COMPOSE_REPLACE);
    44 x += SDNEWSYMWIDTHS[j];