CVE-2017-7261 Information

Description

The vmw_surface_define_ioctl function in drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux kernel through 4.10.5 does not check for a zero value of certain levels data which allows local users to cause a denial of service (ZERO_SIZE_PTR dereference and GPF and possibly panic) via a crafted ioctl call for a /dev/dri/renderD128 device.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

http://marc.info/?t=149037004200005&r=1&w=2 http://www.securityfocus.com/bid/97096 https://bugzilla.redhat.com/show_bug.cgi?id=1435719 https://lists.freedesktop.org/archives/dri-devel/2017-March/136814.html

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5