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Red Hat Bugzilla – Attachment 831461 Details for
Bug 1036495
CVE-2013-6045 openjpeg: heap-based buffer overflows
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[patch]
proposed patch 1
segfault0.patch (text/plain), 857 bytes, created by
Murray McAllister
on 2013-12-02 07:34:01 UTC
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Description:
proposed patch 1
Filename:
MIME Type:
Creator:
Murray McAllister
Created:
2013-12-02 07:34:01 UTC
Size:
857 bytes
patch
obsolete
>Index: openjpeg-1.5.1/libopenjpeg/j2k.c >=================================================================== >--- openjpeg-1.5.1.orig/libopenjpeg/j2k.c 2013-01-01 01:01:01.000000000 +0000 >+++ openjpeg-1.5.1/libopenjpeg/j2k.c 2013-01-01 01:01:01.000000000 +0000 >@@ -1067,6 +1067,17 @@ static void j2k_read_poc(opj_j2k_t *j2k) > tcp->POC = 1; > len = cio_read(cio, 2); /* Lpoc */ > numpchgs = (len - 2) / (5 + 2 * (numcomps <= 256 ? 1 : 2)); >+ >+ { >+ /* old_poc < 0 "just in case" */ >+ int maxpocs = (sizeof(tcp->pocs)/sizeof(tcp->pocs[0])); >+ if ((old_poc < 0) || ((numpchgs + old_poc) >= maxpocs)) { >+ opj_event_msg(j2k->cinfo, EVT_ERROR, >+ "JPWL: bad number of progression order changes (%d out of a maximum of %d)\n", >+ (numpchgs + old_poc), maxpocs); >+ return; >+ } >+ } > > for (i = old_poc; i < numpchgs + old_poc; i++) { > opj_poc_t *poc;
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