Linux · Linux Kernel · CVE-2020-7053
**Name of the Vulnerable Software and Affected Versions**
Linux kernel versions 4.14 through 4.14.165
Linux kernel versions 4.19 through 4.19.96
Linux kernel versions 5.x before 5.2
**Description**
The issue is related to a use-after-free in the `i915 ppgtt close` function in drivers/gpu/drm/i915/i915 gem gtt.c. This is connected to the `i915 gem context destroy ioctl` function in drivers/gpu/drm/i915/i915 gem context.c. The vulnerability can be exploited to cause a denial of service using the Intel i915 graphics driver system call.
**Recommendations**
For Linux kernel versions 4.14 through 4.14.165, update to a version after 4.14.165 to resolve the issue.
For Linux kernel versions 4.19 through 4.19.96, update to a version after 4.19.96 to resolve the issue.
For Linux kernel versions 5.x before 5.2, update to version 5.2 or later to resolve the issue.
As a temporary workaround, consider restricting access to the `i915 gem context destroy ioctl` system call to minimize the risk of exploitation.