[PATCH] libsdl2: fix CVE-2019-13616

[PATCH] libsdl2: fix CVE-2019-13616

[Yi Zhao]

Reference:
https://nvd.nist.gov/vuln/detail/CVE-2019-13616

Patch from:
https://hg.libsdl.org/SDL/rev/e7ba650a643a

Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
---
 ...538-validate-image-size-when-loading-BMP-.patch | 34 ++++++++++++++++++++++
 meta/recipes-graphics/libsdl2/libsdl2_2.0.10.bb    |  1 +
 2 files changed, 35 insertions(+)
 create mode 100644 meta/recipes-graphics/libsdl2/libsdl2/0001-Fixed-bug-4538-validate-image-size-when-loading-BMP-.patch

diff --git a/meta/recipes-graphics/libsdl2/libsdl2/0001-Fixed-bug-4538-validate-image-size-when-loading-BMP-.patch b/meta/recipes-graphics/libsdl2/libsdl2/0001-Fixed-bug-4538-validate-image-size-when-loading-BMP-.patch
new file mode 100644
index 0000000..674decc
--- /dev/null
+++ b/meta/recipes-graphics/libsdl2/libsdl2/0001-Fixed-bug-4538-validate-image-size-when-loading-BMP-.patch
@@ -0,0 +1,34 @@
+From 85138c1ec673e05263ae666baf61f79384daf7e0 Mon Sep 17 00:00:00 2001
+From: Sam Lantinga <slouken@libsdl.org>
+Date: Tue, 30 Jul 2019 11:00:00 -0700
+Subject: [PATCH] Fixed bug 4538 - validate image size when loading BMP files
+
+Upstream-Status: Backport
+[https://hg.libsdl.org/SDL/rev/e7ba650a643a]
+
+CVE: CVE-2019-13616
+
+Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
+---
+ src/video/SDL_bmp.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/src/video/SDL_bmp.c b/src/video/SDL_bmp.c
+index 0b68918..a06b0c9 100644
+--- a/src/video/SDL_bmp.c
++++ b/src/video/SDL_bmp.c
+@@ -226,6 +226,11 @@ SDL_LoadBMP_RW(SDL_RWops * src, int freesrc)
+             SDL_RWseek(src, (biSize - headerSize), RW_SEEK_CUR);
+         }
+     }
++    if (biWidth <= 0 || biHeight == 0) {
++        SDL_SetError("BMP file with bad dimensions (%dx%d)", biWidth, biHeight);
++        was_error = SDL_TRUE;
++        goto done;
++    }
+     if (biHeight < 0) {
+         topDown = SDL_TRUE;
+         biHeight = -biHeight;
+-- 
+2.7.4
+
diff --git a/meta/recipes-graphics/libsdl2/libsdl2_2.0.10.bb b/meta/recipes-graphics/libsdl2/libsdl2_2.0.10.bb
index 3a0654b..cdc8650 100644
--- a/meta/recipes-graphics/libsdl2/libsdl2_2.0.10.bb
+++ b/meta/recipes-graphics/libsdl2/libsdl2_2.0.10.bb
@@ -14,6 +14,7 @@ PROVIDES = "virtual/libsdl2"
 
 SRC_URI = "http://www.libsdl.org/release/SDL2-${PV}.tar.gz \
            file://more-gen-depends.patch \
+           file://0001-Fixed-bug-4538-validate-image-size-when-loading-BMP-.patch \
 "
 
 S = "${WORKDIR}/SDL2-${PV}"
-- 
2.7.4