Bug 1776832 (CVE-2019-19082) - CVE-2019-19082 kernel: memory leaks in *create_resource_pool() functions under drivers/gpu/drm/amd/display/dc leads to DoS
Summary: CVE-2019-19082 kernel: memory leaks in *create_resource_pool() functions unde...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-19082
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1776833 1825118 1825119 1825120 1825121 1825122
Blocks: 1776834
TreeView+ depends on / blocked
 
Reported: 2019-11-26 13:25 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-10-25 22:13 UTC (History)
42 users (show)

Fixed In Version:
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Doc Text:
A memory leak flaw was found in the Linux kernel. A system crash occurs under very specific, hard to obtain conditions, when the AMD GPU Display Engine configuration initialization handles resource cleaning when a failure occurs. The highest threat from this vulnerability is system availability.
Clone Of:
Environment:
Last Closed: 2021-10-25 22:13:41 UTC
Embargoed:

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Description Guilherme de Almeida Suckevicz 2019-11-26 13:25:15 UTC 
Memory leaks in *create_resource_pool() functions under drivers/gpu/drm/amd/display/dc in the Linux kernel through 5.3.11 allow attackers to cause a denial of service (memory consumption). This affects the dce120_create_resource_pool() function in drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c, the dce110_create_resource_pool() function in drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c, the dce100_create_resource_pool() function in drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c, the dcn10_create_resource_pool() function in drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c, and the dce112_create_resource_pool() function in drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c, aka CID-104c307147ad.

Reference and upstream commit:
https://github.com/torvalds/linux/commit/104c307147ad379617472dd91a5bcb368d72bd6d
Comment 1 Guilherme de Almeida Suckevicz 2019-11-26 13:26:26 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1776833]
Comment 2 Justin M. Forbes 2019-12-03 15:14:14 UTC 
This is fixed for Fedora with the 5.3.14 stable kernel updates.
Comment 4 Petr Matousek 2020-04-17 06:33:42 UTC 
Mitigation:

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Comment 6 Eric Christensen 2020-04-17 16:05:34 UTC 
Statement:

This issue is rated as having a Low impact because of the preconditions needed to trigger the resource cleanup code path (system-wide out-of-memory condition).
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