cbcvebase.
CVE-2017-9605
published 2017-06-13

CVE-2017-9605: The vmw_gb_surface_define_ioctl function (accessible via DRM_IOCTL_VMW_GB_SURFACE_CREATE) in drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux kernel…

PriorityP423medium5.5CVSS 3.0
AVLACLPRLUINSUCHINAN
EPSS
0.38%
31.2th percentile
The vmw_gb_surface_define_ioctl function (accessible via DRM_IOCTL_VMW_GB_SURFACE_CREATE) in drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux kernel through 4.11.4 defines a backup_handle variable but does not give it an initial value. If one attempts to create a GB surface, with a previously allocated DMA buffer to be used as a backup buffer, the backup_handle variable does not get written to and is then later returned to user space, allowing local users to obtain sensitive information from uninitialized kernel memory via a crafted ioctl call.

Affected

8 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 4.11.6-1 (bookworm)linux 4.11.6-1 (bookworm)
linuxlinux_kernel<= 4.11.4
linuxlinux_kernel>= 0 < 4.11.6-14.11.6-1
linuxlinux_kernel>= 0 < 4.11.6-14.11.6-1
linuxlinux_kernel>= 0 < 4.11.6-14.11.6-1
linuxlinux_kernel>= 0 < 4.11.6-14.11.6-1
linuxlinux_kernel>= 0 < 3.13.0-125.1743.13.0-125.174
linuxlinux_kernel>= 0 < 4.4.0-87.1104.4.0-87.110

CVSS provenance

nvdv3.05.5MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
nvdv2.04.9MEDIUMAV:L/AC:L/Au:N/C:C/I:N/A:N
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
vendor_ubuntu5.5MEDIUM
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