3 files changed, 12 insertions, 1 deletions

diff --git a/UPDATING b/UPDATING
index cf50259626e6..fb129b8cbfb6 100644
--- a/UPDATING
+++ b/UPDATING
@@ -8,6 +8,10 @@ Items affecting the ports and packages system can be found in
 /usr/ports/UPDATING.  Please read that file before running
 portupgrade.
 
+20100920:	p14	FreeBSD-SA-10:08.bzip2
+	Fix an integer overflow in RLE length parsing when decompressing
+	corrupt bzip2 data.
+
 20100713:	p13	FreeBSD-SA-10:07.mbuf
 	Correctly copy the M_RDONLY flag when duplicating a reference
 	to an mbuf external buffer.
diff --git a/contrib/bzip2/decompress.c b/contrib/bzip2/decompress.c
index bba5e0fa36dc..af1d4d09afb9 100644
--- a/contrib/bzip2/decompress.c
+++ b/contrib/bzip2/decompress.c
@@ -381,6 +381,13 @@ Int32 BZ2_decompress ( DState* s )
             es = -1;
             N = 1;
             do {
+               /* Check that N doesn't get too big, so that es doesn't
+                  go negative.  The maximum value that can be
+                  RUNA/RUNB encoded is equal to the block size (post
+                  the initial RLE), viz, 900k, so bounding N at 2
+                  million should guard against overflow without
+                  rejecting any legitimate inputs. */
+               if (N >= 2*1024*1024) RETURN(BZ_DATA_ERROR);
                if (nextSym == BZ_RUNA) es = es + (0+1) * N; else
                if (nextSym == BZ_RUNB) es = es + (1+1) * N;
                N = N * 2;
diff --git a/sys/conf/newvers.sh b/sys/conf/newvers.sh
index 4838401d220f..833a9c08ea0e 100644
--- a/sys/conf/newvers.sh
+++ b/sys/conf/newvers.sh
@@ -32,7 +32,7 @@
 
 TYPE="FreeBSD"
 REVISION="7.1"
-BRANCH="RELEASE-p13"
+BRANCH="RELEASE-p14"
 if [ "X${BRANCH_OVERRIDE}" != "X" ]; then
 	BRANCH=${BRANCH_OVERRIDE}
 fi