[1/5] tiff: patch CVE-2026-4775

diff --git a/meta/recipes-multimedia/libtiff/tiff/CVE-2026-4775.patch b/meta/recipes-multimedia/libtiff/tiff/CVE-2026-4775.patch
new file mode 100644
index 0000000000..1f3c026b28
--- /dev/null
+++ b/meta/recipes-multimedia/libtiff/tiff/CVE-2026-4775.patch
@@ -0,0 +1,55 @@ 
+From 782a11d6b5b61c6dc21e714950a4af5bf89f023c Mon Sep 17 00:00:00 2001
+From: Even Rouault <even.rouault@spatialys.com>
+Date: Sun, 22 Feb 2026 23:32:47 +0100
+Subject: [PATCH] TIFFReadRGBAImage(): prevent integer overflow and later heap
+ overflow on images with huge width in YCbCr tile decoding functions
+
+Fixes https://gitlab.com/libtiff/libtiff/-/issues/787
+
+CVE: CVE-2026-4775
+Upstream-Status: Backport [https://gitlab.com/libtiff/libtiff/-/commit/782a11d6b5b61c6dc21e714950a4af5bf89f023c]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ libtiff/tif_getimage.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/libtiff/tif_getimage.c b/libtiff/tif_getimage.c
+index 4543ddda..fa82d091 100644
+--- a/libtiff/tif_getimage.c
++++ b/libtiff/tif_getimage.c
+@@ -2216,7 +2216,7 @@ DECLAREContigPutFunc(putcontig8bitYCbCr44tile)
+     uint32_t *cp1 = cp + w + toskew;
+     uint32_t *cp2 = cp1 + w + toskew;
+     uint32_t *cp3 = cp2 + w + toskew;
+-    int32_t incr = 3 * w + 4 * toskew;
++    const tmsize_t incr = 3 * (tmsize_t)w + 4 * (tmsize_t)toskew;
+ 
+     (void)y;
+     /* adjust fromskew */
+@@ -2356,7 +2356,7 @@ DECLAREContigPutFunc(putcontig8bitYCbCr44tile)
+ DECLAREContigPutFunc(putcontig8bitYCbCr42tile)
+ {
+     uint32_t *cp1 = cp + w + toskew;
+-    int32_t incr = 2 * toskew + w;
++    const tmsize_t incr = 2 * (tmsize_t)toskew + w;
+ 
+     (void)y;
+     fromskew = (fromskew / 4) * (4 * 2 + 2);
+@@ -2512,7 +2512,7 @@ DECLAREContigPutFunc(putcontig8bitYCbCr41tile)
+ DECLAREContigPutFunc(putcontig8bitYCbCr22tile)
+ {
+     uint32_t *cp2;
+-    int32_t incr = 2 * toskew + w;
++    const tmsize_t incr = 2 * (tmsize_t)toskew + w;
+     (void)y;
+     fromskew = (fromskew / 2) * (2 * 2 + 2);
+     cp2 = cp + w + toskew;
+@@ -2615,7 +2615,7 @@ DECLAREContigPutFunc(putcontig8bitYCbCr21tile)
+ DECLAREContigPutFunc(putcontig8bitYCbCr12tile)
+ {
+     uint32_t *cp2;
+-    int32_t incr = 2 * toskew + w;
++    const tmsize_t incr = 2 * (tmsize_t)toskew + w;
+     (void)y;
+     fromskew = (fromskew / 1) * (1 * 2 + 2);
+     cp2 = cp + w + toskew;
diff --git a/meta/recipes-multimedia/libtiff/tiff_4.7.1.bb b/meta/recipes-multimedia/libtiff/tiff_4.7.1.bb
index 0d4b3a4abd..750565e11c 100644
--- a/meta/recipes-multimedia/libtiff/tiff_4.7.1.bb
+++ b/meta/recipes-multimedia/libtiff/tiff_4.7.1.bb
@@ -9,6 +9,7 @@  LIC_FILES_CHKSUM = "file://LICENSE.md;md5=4ab490c3088a0acff254eb2f8c577547"
 CVE_PRODUCT = "libtiff"
 
 SRC_URI = "http://download.osgeo.org/libtiff/tiff-${PV}.tar.gz \
+        file://CVE-2026-4775.patch \
 	   "
 
 SRC_URI[sha256sum] = "f698d94f3103da8ca7438d84e0344e453fe0ba3b7486e04c5bf7a9a3fabe9b69"