--- /dev/null
+From 10f72dd232849d0142a0688bcc9aa71025f120a3 Mon Sep 17 00:00:00 2001
+From: erouault <erouault>
+Date: Fri, 2 Dec 2016 23:05:51 +0000
+Subject: [PATCH 2/4] * libtiff/tif_pixarlog.c, libtiff/tif_luv.c: fix
+ heap-based buffer overflow on generation of PixarLog / LUV compressed files,
+ with ColorMap, TransferFunction attached and nasty plays with bitspersample.
+ The fix for LUV has not been tested, but suffers from the same kind of issue
+ of PixarLog. Reported by Agostino Sarubbo. Fixes
+ http://bugzilla.maptools.org/show_bug.cgi?id=2604
+
+Upstream-Status: Backport
+
+CVE: CVE-2016-10269
+Signed-off-by: Rajkumar Veer <rveer@mvista.com>
+---
+ ChangeLog | 10 ++++++++++
+ libtiff/tif_luv.c | 18 ++++++++++++++----
+ libtiff/tif_pixarlog.c | 17 +++++++++++++++--
+ 3 files changed, 39 insertions(+), 6 deletions(-)
+
+diff --git a/ChangeLog b/ChangeLog
+index 2e913b6..0a2c2a7 100644
+--- a/ChangeLog
++++ b/ChangeLog
+@@ -1,4 +1,14 @@
+ 2016-12-03 Even Rouault <even.rouault at spatialys.com>
++
++ * libtiff/tif_pixarlog.c, libtiff/tif_luv.c: fix heap-based buffer
++ overflow on generation of PixarLog / LUV compressed files, with
++ ColorMap, TransferFunction attached and nasty plays with bitspersample.
++ The fix for LUV has not been tested, but suffers from the same kind
++ of issue of PixarLog.
++ Reported by Agostino Sarubbo.
++ Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2604
++
++2016-12-03 Even Rouault <even.rouault at spatialys.com>
+
+ * libtiff/tif_ojpeg.c: make OJPEGDecode() early exit in case of failure in
+ OJPEGPreDecode(). This will avoid a divide by zero, and potential other issues.
+diff --git a/libtiff/tif_luv.c b/libtiff/tif_luv.c
+index f68a9b1..e6783db 100644
+--- a/libtiff/tif_luv.c
++++ b/libtiff/tif_luv.c
+@@ -158,6 +158,7 @@
+ typedef struct logLuvState LogLuvState;
+
+ struct logLuvState {
++ int encoder_state; /* 1 if encoder correctly initialized */
+ int user_datafmt; /* user data format */
+ int encode_meth; /* encoding method */
+ int pixel_size; /* bytes per pixel */
+@@ -1552,6 +1553,7 @@ LogLuvSetupEncode(TIFF* tif)
+ td->td_photometric, "must be either LogLUV or LogL");
+ break;
+ }
++ sp->encoder_state = 1;
+ return (1);
+ notsupported:
+ TIFFErrorExt(tif->tif_clientdata, module,
+@@ -1563,19 +1565,27 @@ notsupported:
+ static void
+ LogLuvClose(TIFF* tif)
+ {
++ LogLuvState* sp = (LogLuvState*) tif->tif_data;
+ TIFFDirectory *td = &tif->tif_dir;
+
++ assert(sp != 0);
+ /*
+ * For consistency, we always want to write out the same
+ * bitspersample and sampleformat for our TIFF file,
+ * regardless of the data format being used by the application.
+ * Since this routine is called after tags have been set but
+ * before they have been recorded in the file, we reset them here.
++ * Note: this is really a nasty approach. See PixarLogClose
+ */
+- td->td_samplesperpixel =
+- (td->td_photometric == PHOTOMETRIC_LOGL) ? 1 : 3;
+- td->td_bitspersample = 16;
+- td->td_sampleformat = SAMPLEFORMAT_INT;
++ if( sp->encoder_state )
++ {
++ /* See PixarLogClose. Might avoid issues with tags whose size depends
++ * on those below, but not completely sure this is enough. */
++ td->td_samplesperpixel =
++ (td->td_photometric == PHOTOMETRIC_LOGL) ? 1 : 3;
++ td->td_bitspersample = 16;
++ td->td_sampleformat = SAMPLEFORMAT_INT;
++ }
+ }
+
+ static void
+diff --git a/libtiff/tif_pixarlog.c b/libtiff/tif_pixarlog.c
+index d1246c3..aa99bc9 100644
+--- a/libtiff/tif_pixarlog.c
++++ b/libtiff/tif_pixarlog.c
+@@ -1233,8 +1233,10 @@ PixarLogPostEncode(TIFF* tif)
+ static void
+ PixarLogClose(TIFF* tif)
+ {
++ PixarLogState* sp = (PixarLogState*) tif->tif_data;
+ TIFFDirectory *td = &tif->tif_dir;
+
++ assert(sp != 0);
+ /* In a really sneaky (and really incorrect, and untruthful, and
+ * troublesome, and error-prone) maneuver that completely goes against
+ * the spirit of TIFF, and breaks TIFF, on close, we covertly
+@@ -1243,8 +1245,19 @@ PixarLogClose(TIFF* tif)
+ * readers that don't know about PixarLog, or how to set
+ * the PIXARLOGDATFMT pseudo-tag.
+ */
+- td->td_bitspersample = 8;
+- td->td_sampleformat = SAMPLEFORMAT_UINT;
++
++ if (sp->state&PLSTATE_INIT) {
++ /* We test the state to avoid an issue such as in
++ * http://bugzilla.maptools.org/show_bug.cgi?id=2604
++ * What appends in that case is that the bitspersample is 1 and
++ * a TransferFunction is set. The size of the TransferFunction
++ * depends on 1<<bitspersample. So if we increase it, an access
++ * out of the buffer will happen at directory flushing.
++ * Another option would be to clear those targs.
++ */
++ td->td_bitspersample = 8;
++ td->td_sampleformat = SAMPLEFORMAT_UINT;
++ }
+ }
+
+ static void
+--
+1.9.1
+
