svn commit: r303300 - stable/11/usr.bin/bsdiff/bspatch
Xin LI
delphij at FreeBSD.org
Mon Jul 25 14:52:13 UTC 2016
Author: delphij
Date: Mon Jul 25 14:52:12 2016
New Revision: 303300
URL: https://svnweb.freebsd.org/changeset/base/303300
Log:
Fix bspatch heap overflow vulnerability.
Obtained from: Chromium
Reported by: Lu Tung-Pin
Security: FreeBSD-SA-16:25.bspatch
Approved by: re (so@ blanket)
Modified:
stable/11/usr.bin/bsdiff/bspatch/bspatch.c
Modified: stable/11/usr.bin/bsdiff/bspatch/bspatch.c
==============================================================================
--- stable/11/usr.bin/bsdiff/bspatch/bspatch.c Mon Jul 25 14:49:15 2016 (r303299)
+++ stable/11/usr.bin/bsdiff/bspatch/bspatch.c Mon Jul 25 14:52:12 2016 (r303300)
@@ -164,6 +164,10 @@ int main(int argc,char * argv[])
}
/* Sanity-check */
+ if ((ctrl[0] < 0) || (ctrl[1] < 0))
+ errx(1,"Corrupt patch\n");
+
+ /* Sanity-check */
if(newpos+ctrl[0]>newsize)
errx(1,"Corrupt patch\n");
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