CVE-2020-7053 Information

Description

In the Linux kernel 4.14 longterm through 4.14.165 and 4.19 longterm through 4.19.96 (and 5.x before 5.2) there is a use-after-free (write) in the i915_ppgtt_close function in drivers/gpu/drm/i915/i915_gem_gtt.c aka CID-7dc40713618c. This is related to i915_gem_context_destroy_ioctl in drivers/gpu/drm/i915/i915_gem_context.c.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html http://packetstormsecurity.com/files/156455/Kernel-Live-Patch-Security-Notice-LSN-0063-1.html https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1859522 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7dc40713618c884bf07c030d1ab1f47a9dc1f310 https://lore.kernel.org/stable/20200114183937.12224-1-tyhicks@canonical.com https://security.netapp.com/advisory/ntap-20200204-0002/ https://usn.ubuntu.com/4255-1/ https://usn.ubuntu.com/4255-2/ https://usn.ubuntu.com/4285-1/ https://usn.ubuntu.com/4287-1/ https://usn.ubuntu.com/4287-2/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8