kernel: drm/vmwgfx: Fix stale file descriptors on failed usercopy

A use-after-free vulnerability has been identified in the Linux kernel's VMware graphics driver vmwgfx driver. This flaw occurs during the usercopy operation for the fencerep object. If this operation fails, it can leave a stale dangling file descriptor in the system's file descriptor table. This...

kernel: failing usercopy allows for use-after-free exploitation

A use-after-free flaw was found in the Linux kernel’s vmwexecbufcopyfenceuser function in drivers/gpu/drm/vmwgfx/vmwgfxexecbuf.c in vmwgfx. This flaw allows a local attacker with user privileges to cause a privilege escalation problem...

UBUNTU-CVE-2017-9605

The vmwgbsurfacedefineioctl function accessible via DRMIOCTLVMWGBSURFACECREATE in drivers/gpu/drm/vmwgfx/vmwgfxsurface.c in the Linux kernel through 4.11.4 defines a backuphandle variable but does not give it an initial value. If one attempts to create a GB surface, with a previously allocated DM...

DEBIAN-CVE-2017-7346

The vmwgbsurfacedefineioctl function in drivers/gpu/drm/vmwgfx/vmwgfxsurface.c in the Linux kernel through 4.10.7 does not validate certain levels data, which allows local users to cause a denial of service system hang via a crafted ioctl call for a /dev/dri/renderD device...

USN-2909-2 linux-lts-utopic regression

USN-2909-1 fixed vulnerabilities in the Ubuntu 14.10 Linux kernel backported to Ubuntu 14.04 LTS. An incorrect locking fix caused a regression that broke graphics displays for Ubuntu 14.04 LTS guests running the Ubuntu 14.10 backport kernel within VMWare virtual machines. This update fixes the...

USN-2910-2 linux-lts-vivid regression

USN-2910-1 fixed vulnerabilities in the Ubuntu 15.04 Linux kernel backported to Ubuntu 14.04 LTS. An incorrect locking fix caused a regression that broke graphics displays for Ubuntu 14.04 LTS guests running the Ubuntu 15.04 backport kernel within VMWare virtual machines. This update fixes the...