Bug 1774968 (CVE-2019-19067) - CVE-2019-19067 kernel: Four memory leaks in the acp_hw_init() function in drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c allow for a DoS
Summary: CVE-2019-19067 kernel: Four memory leaks in the acp_hw_init() function in dri...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-19067
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: 1771779 1774969 1829879 1829880
Blocks: 1774970
TreeView+ depends on / blocked
 
Reported: 2019-11-21 10:49 UTC by Marian Rehak
Modified: 2021-10-25 22:13 UTC (History)
42 users (show)

Fixed In Version:
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Doc Text:
A flaw was found in the Linux kernel. The acp_hw_init function fails to cleanup resources properly. A local attacker can induce an error condition to crash the system. The highest threat from this vulnerability is to system availability.
Clone Of:
Environment:
Last Closed: 2021-10-25 22:13:04 UTC
Embargoed:

Attachments (Terms of Use)

Description Marian Rehak 2019-11-21 10:49:53 UTC 
Four memory leaks in the acp_hw_init() function in drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c in the Linux kernel before 5.3.8 allow attackers to cause a denial of service (memory consumption) by triggering mfd_add_hotplug_devices() or pm_genpd_add_device() failures.

Upstream Issue:

https://github.com/torvalds/linux/commit/57be09c6e8747bf48704136d9e3f92bfb93f5725
Comment 1 Marian Rehak 2019-11-21 10:50:18 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1774969]
Comment 2 Justin M. Forbes 2019-11-21 15:59:03 UTC 
This was fixed for Fedora in the 5.3.8 stable kernel update.
Comment 4 Petr Matousek 2020-04-30 13:57:01 UTC 
Statement:

This issue is rated as having Low impact because of the preconditions needed to trigger the error/resource cleanup code path.
Comment 5 Petr Matousek 2020-04-30 14:02:58 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.
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