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21 lines
808 B
Diff
21 lines
808 B
Diff
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Fix CVE-2007-2721 (heap corruption in jpc_qcx_getcompparms()).
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Copied from Fedora.
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http://pkgs.fedoraproject.org/cgit/rpms/jasper.git/tree/patch-libjasper-stepsizes-overflow.diff
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--- jasper-1.900.1.orig/src/libjasper/jpc/jpc_cs.c 2007-01-19 22:43:07.000000000 +0100
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+++ jasper-1.900.1/src/libjasper/jpc/jpc_cs.c 2007-04-06 01:29:02.000000000 +0200
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@@ -982,7 +982,10 @@ static int jpc_qcx_getcompparms(jpc_qcxc
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compparms->numstepsizes = (len - n) / 2;
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break;
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}
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- if (compparms->numstepsizes > 0) {
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+ if (compparms->numstepsizes > 3 * JPC_MAXRLVLS + 1) {
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+ jpc_qcx_destroycompparms(compparms);
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+ return -1;
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+ } else if (compparms->numstepsizes > 0) {
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compparms->stepsizes = jas_malloc(compparms->numstepsizes *
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sizeof(uint_fast16_t));
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assert(compparms->stepsizes);
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