From c622bdd7133d31d7fbefe87fb38187f0aea4b592 Mon Sep 17 00:00:00 2001 From: Armin Kuster Date: Fri, 29 Jan 2016 12:35:16 -0800 Subject: qemu: Security fix CVE-2015-8504 CVE-2015-8504 Qemu: ui: vnc: avoid floating point exception Signed-off-by: Armin Kuster Signed-off-by: Richard Purdie --- .../recipes-devtools/qemu/qemu/CVE-2015-8504.patch | 51 ++++++++++++++++++++++ meta/recipes-devtools/qemu/qemu_2.4.0.bb | 1 + 2 files changed, 52 insertions(+) create mode 100644 meta/recipes-devtools/qemu/qemu/CVE-2015-8504.patch diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2015-8504.patch b/meta/recipes-devtools/qemu/qemu/CVE-2015-8504.patch new file mode 100644 index 0000000000..9e660217ff --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2015-8504.patch @@ -0,0 +1,51 @@ +From 4c65fed8bdf96780735dbdb92a8bd0d6b6526cc3 Mon Sep 17 00:00:00 2001 +From: Prasad J Pandit +Date: Thu, 3 Dec 2015 18:54:17 +0530 +Subject: [PATCH] ui: vnc: avoid floating point exception + +While sending 'SetPixelFormat' messages to a VNC server, +the client could set the 'red-max', 'green-max' and 'blue-max' +values to be zero. This leads to a floating point exception in +write_png_palette while doing frame buffer updates. + +Reported-by: Lian Yihan +Signed-off-by: Prasad J Pandit +Reviewed-by: Gerd Hoffmann +Signed-off-by: Peter Maydell + +Upstream-Status: Backport + +http://git.qemu.org/?p=qemu.git;a=commitdiff;h=4c65fed8bdf96780735dbdb92a8 + +CVE: CVE-2015-8504 +[Yocto # 9013] + +Signed-off-by: Armin Kuster + +--- + ui/vnc.c | 6 +++--- + 1 file changed, 3 insertions(+), 3 deletions(-) + +Index: qemu-2.4.0/ui/vnc.c +=================================================================== +--- qemu-2.4.0.orig/ui/vnc.c ++++ qemu-2.4.0/ui/vnc.c +@@ -2189,15 +2189,15 @@ static void set_pixel_format(VncState *v + return; + } + +- vs->client_pf.rmax = red_max; ++ vs->client_pf.rmax = red_max ? red_max : 0xFF; + vs->client_pf.rbits = hweight_long(red_max); + vs->client_pf.rshift = red_shift; + vs->client_pf.rmask = red_max << red_shift; +- vs->client_pf.gmax = green_max; ++ vs->client_pf.gmax = green_max ? green_max : 0xFF; + vs->client_pf.gbits = hweight_long(green_max); + vs->client_pf.gshift = green_shift; + vs->client_pf.gmask = green_max << green_shift; +- vs->client_pf.bmax = blue_max; ++ vs->client_pf.bmax = blue_max ? blue_max : 0xFF; + vs->client_pf.bbits = hweight_long(blue_max); + vs->client_pf.bshift = blue_shift; + vs->client_pf.bmask = blue_max << blue_shift; diff --git a/meta/recipes-devtools/qemu/qemu_2.4.0.bb b/meta/recipes-devtools/qemu/qemu_2.4.0.bb index 1505b80a51..fec1061212 100644 --- a/meta/recipes-devtools/qemu/qemu_2.4.0.bb +++ b/meta/recipes-devtools/qemu/qemu_2.4.0.bb @@ -10,6 +10,7 @@ SRC_URI += "file://configure-fix-Darwin-target-detection.patch \ file://smc91c111_fix2.patch \ file://smc91c111_fix3.patch \ file://no-valgrind.patch \ + file://CVE-2015-8504.patch \ " SRC_URI_prepend = "http://wiki.qemu-project.org/download/${BP}.tar.bz2" SRC_URI[md5sum] = "186ee8194140a484a455f8e3c74589f4" -- cgit 1.2.3-korg