Bug 1760450 (CVE-2019-16230) - CVE-2019-16230 kernel: null pointer dereference in drivers/gpu/drm/radeon/radeon_display.c
Summary: CVE-2019-16230 kernel: null pointer dereference in drivers/gpu/drm/radeon/rad...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2019-16230
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: 1760451
Blocks: 1760452
TreeView+ depends on / blocked
 
Reported: 2019-10-10 14:58 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-02-16 21:17 UTC (History)
46 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the radeon_crtc_init function of the Linux kernel. The kernel doesn't handle work queue allocation failures correctly leading to a crash of the system. The highest threat from this vulnerability is to system availability.
Clone Of:
Environment:
Last Closed: 2020-04-30 22:31:47 UTC


Attachments (Terms of Use)

Description Guilherme de Almeida Suckevicz 2019-10-10 14:58:39 UTC
drivers/gpu/drm/radeon/radeon_display.c in the Linux kernel 5.2.14 does not check the alloc_workqueue return value, leading to a NULL pointer dereference.

Reference:
https://lkml.org/lkml/2019/9/9/487

Comment 1 Guilherme de Almeida Suckevicz 2019-10-10 14:59:13 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1760451]

Comment 2 Justin M. Forbes 2020-03-19 21:48:28 UTC
This was fixed for Fedora with the 5.4.7 stable kernel updates.

Comment 6 Petr Matousek 2020-04-30 16:56:15 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 7 Petr Matousek 2020-04-30 16:58:42 UTC
Statement:

This issue is rated as having Low impact because of the preconditions needed to trigger the error/resource cleanup code path (system-wide out-of-memory condition, high privileges or physical access). The attacker would have to be able to induce system-wide out-of-memory condition which itself could be seen as a local denial of service. It could be argued that having such privileges has the same impact as the flaw itself.

Comment 8 Product Security DevOps Team 2020-04-30 22:31:47 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-16230


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