tiff: fix CVE-2025-9900

A flaw was found in Libtiff. This vulnerability is a "write-what-where"
condition, triggered when the library processes a specially crafted TIFF
image file.[EOL][EOL]By providing an abnormally large image height value
in the file's metadata, an attacker can trick the library into writing
attacker-controlled color data to an arbitrary memory location. This
memory corruption can be exploited to cause a denial of service (application
crash) or to achieve arbitrary code execution with the permissions of the user.

Reference:
https://nvd.nist.gov/vuln/detail/CVE-2025-9900

Upstream patch:
https://gitlab.com/libtiff/libtiff/-/commit/3e0dcf0ec651638b2bd849b2e6f3124b36890d99

(From OE-Core rev: c1303b8eb4e85a031a175867361876a256bfb763)

Signed-off-by: Yogita Urade <yogita.urade@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

2 files changed, 55 insertions, 0 deletions

diff --git a/meta/recipes-multimedia/libtiff/tiff/CVE-2025-9900.patch b/meta/recipes-multimedia/libtiff/tiff/CVE-2025-9900.patch
new file mode 100644
index 0000000000..97858163e2
--- /dev/null
+++ b/meta/recipes-multimedia/libtiff/tiff/CVE-2025-9900.patch
@@ -0,0 +1,54 @@
+From 3e0dcf0ec651638b2bd849b2e6f3124b36890d99 Mon Sep 17 00:00:00 2001
+From: Su Laus <sulau@freenet.de>
+Date: Wed, 11 Jun 2025 19:45:19 +0000
+Subject: [PATCH] tif_getimage.c: Fix buffer underflow crash for less raster
+ rows at TIFFReadRGBAImageOriented()
+
+CVE: CVE-2025-9900
+Upstream-Status: Backport [https://gitlab.com/libtiff/libtiff/-/commit/3e0dcf0ec651638b2bd849b2e6f3124b36890d99]
+
+Signed-off-by: Yogita Urade <yogita.urade@windriver.com>
+---
+ libtiff/tif_getimage.c | 20 +++++++++++++++++---
+ 1 file changed, 17 insertions(+), 3 deletions(-)
+
+diff --git a/libtiff/tif_getimage.c b/libtiff/tif_getimage.c
+index 3c9fc4f..fc8b22e 100644
+--- a/libtiff/tif_getimage.c
++++ b/libtiff/tif_getimage.c
+@@ -600,6 +600,22 @@ int TIFFRGBAImageGet(TIFFRGBAImage *img, uint32_t *raster, uint32_t w,
+             "No \"put\" routine setupl; probably can not handle image format");
+         return (0);
+     }
++    /* Verify raster width and height against image width and height. */
++    if (h > img->height)
++    {
++        /* Adapt parameters to read only available lines and put image at
++         * the bottom of the raster. */
++        raster += (size_t)(h - img->height) * w;
++        h = img->height;
++    }
++    if (w > img->width)
++    {
++        TIFFWarningExtR(img->tif, TIFFFileName(img->tif),
++                        "Raster width of %d shall not be larger than image "
++                        "width of %d -> raster width adapted for reading",
++                        w, img->width);
++        w = img->width;
++    }
+     return (*img->get)(img, raster, w, h);
+ }
+
+@@ -617,9 +633,7 @@ int TIFFReadRGBAImageOriented(TIFF *tif, uint32_t rwidth, uint32_t rheight,
+     if (TIFFRGBAImageOK(tif, emsg) && TIFFRGBAImageBegin(&img, tif, stop, emsg))
+     {
+         img.req_orientation = (uint16_t)orientation;
+-        /* XXX verify rwidth and rheight against width and height */
+-        ok = TIFFRGBAImageGet(&img, raster + (rheight - img.height) * rwidth,
+-                              rwidth, img.height);
++        ok = TIFFRGBAImageGet(&img, raster, rwidth, rheight);
+         TIFFRGBAImageEnd(&img);
+     }
+     else
+--
+2.40.0
diff --git a/meta/recipes-multimedia/libtiff/tiff_4.6.0.bb b/meta/recipes-multimedia/libtiff/tiff_4.6.0.bb
index 6bf7010ba2..1d3d08ff9d 100644
--- a/meta/recipes-multimedia/libtiff/tiff_4.6.0.bb
+++ b/meta/recipes-multimedia/libtiff/tiff_4.6.0.bb
@@ -17,6 +17,7 @@ SRC_URI = "http://download.osgeo.org/libtiff/tiff-${PV}.tar.gz \
            file://CVE-2023-52355-0002.patch \
            file://CVE-2023-52356.patch \
            file://CVE-2024-7006.patch \
+           file://CVE-2025-9900.patch \
            "
 
 SRC_URI[sha256sum] = "88b3979e6d5c7e32b50d7ec72fb15af724f6ab2cbf7e10880c360a77e4b5d99a"