CVE-2024-49920: drm/amd/display: Check null pointers before multiple uses
First published: Mon Oct 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check null pointers before multiple uses [WHAT & HOW] Poniters, such as stream_enc and dc->bw_vbios, are null checked previously in the same function, so Coverity warns "implies that stream_enc and dc->bw_vbios might be null". They are used multiple times in the subsequent code and need to be checked. This fixes 10 FORWARD_NULL issues reported by Coverity.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <6.11.3 | |
| debian/linux | <=5.10.223-1<=5.10.234-1<=6.1.129-1<=6.1.128-1 | 6.12.20-1 6.12.21-1 |
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Reference Links
- https://git.kernel.org/stable/c/26787fb6c2b2ee0d1a7e1574b36f4711ae40fe27
- https://git.kernel.org/stable/c/fdd5ecbbff751c3b9061d8ebb08e5c96119915b4
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49920
- https://nvd.nist.gov/vuln/detail/CVE-2024-49920
- https://launchpad.net/bugs/cve/CVE-2024-49920
- https://security-tracker.debian.org/tracker/CVE-2024-49920
- https://ubuntu.com/security/CVE-2024-49920
- https://git.kernel.org/linus/fdd5ecbbff751c3b9061d8ebb08e5c96119915b4
Frequently Asked Questions
What is the severity of CVE-2024-49920?
The severity of CVE-2024-49920 has not been officially rated, but it is important to address it due to potential impacts on system stability and security.
How do I fix CVE-2024-49920?
To fix CVE-2024-49920, update your Linux kernel to version 6.12.12-1 or later.
Which Linux kernel versions are affected by CVE-2024-49920?
CVE-2024-49920 affects Linux kernel versions prior to 6.12.12.
Is CVE-2024-49920 related to AMD graphics?
Yes, CVE-2024-49920 is specifically associated with the AMD display component of the Linux kernel.
What types of systems are at risk from CVE-2024-49920?
Systems running vulnerable versions of the Linux kernel that utilize AMD graphics components are at risk from CVE-2024-49920.
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