#VU24446 Memory leak in Linux kernel - CVE-2019-19083

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the "clock_source_create()" functions under drivers/gpu/drm/amd/display/dc in the Linux kernel before 5.3.8 allow a local user to cause a denial of service (memory consumption).

This vulnerability affects the following functions:

• dce112_clock_source_create() function in drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c
  

• dce100_clock_source_create() function in drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c
  

• dcn10_clock_source_create() function in drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c

• dcn20_clock_source_create() function in drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
  

• dce120_clock_source_create() function in drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c
  

• dce110_clock_source_create() function in drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c
  

• dce80_clock_source_create() function in drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c

Remediation

External links

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.8
• https://github.com/torvalds/linux/commit/055e547478a11a6360c7ce05e2afc3e366968a12
• https://security.netapp.com/advisory/ntap-20191205-0001/
• https://usn.ubuntu.com/4208-1/