Messages in this thread Patch in this message | | | From | Kamal Mostafa <> | Subject | [PATCH 3.19.y-ckt 003/155] [media] media/vivid-osd: fix info leak in ioctl | Date | Thu, 12 Nov 2015 15:15:57 -0800 |
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3.19.8-ckt10 -stable review patch. If anyone has any objections, please let me know.
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From: =?UTF-8?q?Salva=20Peir=C3=B3?= <speirofr@gmail.com>
commit eda98796aff0d9bf41094b06811f5def3b4c333c upstream.
The vivid_fb_ioctl() code fails to initialize the 16 _reserved bytes of struct fb_vblank after the ->hcount member. Add an explicit memset(0) before filling the structure to avoid the info leak.
Signed-off-by: Salva Peiró <speirofr@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Reference: CVE-2015-7884 Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- drivers/media/platform/vivid/vivid-osd.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/media/platform/vivid/vivid-osd.c b/drivers/media/platform/vivid/vivid-osd.c index 084d346..e15eef6 100644 --- a/drivers/media/platform/vivid/vivid-osd.c +++ b/drivers/media/platform/vivid/vivid-osd.c @@ -85,6 +85,7 @@ static int vivid_fb_ioctl(struct fb_info *info, unsigned cmd, unsigned long arg) case FBIOGET_VBLANK: { struct fb_vblank vblank; + memset(&vblank, 0, sizeof(vblank)); vblank.flags = FB_VBLANK_HAVE_COUNT | FB_VBLANK_HAVE_VCOUNT | FB_VBLANK_HAVE_VSYNC; vblank.count = 0; -- 1.9.1
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