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Red Hat Bugzilla – Attachment 156803 Details for
Bug 243888
CVE-2006-4168 libexif integer overflow
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[patch]
proposed patch from 0.6.16
cve-2007-4168.txt (text/plain), 779 bytes, created by
Mark J. Cox
on 2007-06-12 16:02:58 UTC
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Description:
proposed patch from 0.6.16
Filename:
MIME Type:
Creator:
Mark J. Cox
Created:
2007-06-12 16:02:58 UTC
Size:
779 bytes
patch
obsolete
> >--- libexif-0.6.15/libexif/exif-data.c 2007-05-23 16:06:37.037242000 +0200 >+++ libexif-0.6.16/libexif/exif-data.c 2007-06-12 15:01:54.000000000 +0200 >@@ -167,13 +167,18 @@ > "Loading entry 0x%x ('%s')...", entry->tag, > exif_tag_get_name (entry->tag)); > >+ /* {0,1,2,4,8} x { 0x00000000 .. 0xffffffff } >+ * -> { 0x000000000 .. 0x7fffffff8 } */ >+ s = exif_format_get_size(entry->format) * entry->components; >+ if (s < entry->components) { >+ return 0; >+ } >+ if (0 == s) >+ return 0; > /* > * Size? If bigger than 4 bytes, the actual data is not > * in the entry but somewhere else (offset). > */ >- s = exif_format_get_size (entry->format) * entry->components; >- if (!s) >- return 0; > if (s > 4) > doff = exif_get_long (d + offset + 8, data->priv->order); > else > >
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