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8210866: Improve JPEG processing

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Reviewed-by: serb, psadhukhan, rhalade
This commit is contained in:
Phil Race 2018-10-08 12:53:53 -07:00
parent f8e1bfc6c1
commit 8d5c5cb94a
1 changed files with 7 additions and 0 deletions
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7
src/java.desktop/share/native/libjavajpeg/jmemmgr.c
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@ -406,6 +406,9 @@ alloc_sarray (j_common_ptr cinfo, int pool_id,
JDIMENSION rowsperchunk, currow, i; JDIMENSION rowsperchunk, currow, i;
long ltemp; long ltemp;
if (samplesperrow == 0) {
ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);
}
/* Calculate max # of rows allowed in one allocation chunk */ /* Calculate max # of rows allowed in one allocation chunk */
ltemp = (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr)) / ltemp = (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr)) /
((long) samplesperrow * SIZEOF(JSAMPLE)); ((long) samplesperrow * SIZEOF(JSAMPLE));
@ -454,6 +457,10 @@ alloc_barray (j_common_ptr cinfo, int pool_id,
JDIMENSION rowsperchunk, currow, i; JDIMENSION rowsperchunk, currow, i;
long ltemp; long ltemp;
if (blocksperrow == 0) {
ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);
}
/* Calculate max # of rows allowed in one allocation chunk */ /* Calculate max # of rows allowed in one allocation chunk */
ltemp = (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr)) / ltemp = (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr)) /
((long) blocksperrow * SIZEOF(JBLOCK)); ((long) blocksperrow * SIZEOF(JBLOCK));