CVE-2024-49907: drm/amd/display: Check null pointers before using dc->clk_mgr
First published: Mon Oct 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check null pointers before using dc->clk_mgr [WHY & HOW] dc->clk_mgr is null checked previously in the same function, indicating it might be null. Passing "dc" to "dc->hwss.apply_idle_power_optimizations", which dereferences null "dc->clk_mgr". (The function pointer resolves to "dcn35_apply_idle_power_optimizations".) This fixes 1 FORWARD_NULL issue reported by Coverity.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <5.10.227 | |
| Linux Kernel | >=5.11<5.15.168 | |
| Linux Kernel | >=5.16<6.1.113 | |
| Linux Kernel | >=6.2<6.6.55 | |
| Linux Kernel | >=6.7<6.10.14 | |
| Linux Kernel | >=6.11<6.11.3 | |
| debian/linux | <=5.10.223-1<=5.10.226-1 | 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 |
| debian/linux-6.1 | 6.1.119-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/3f7e533c10db3d0158709a99e2129ff63add6bcd
- https://git.kernel.org/stable/c/5ba3fbf75b243b2863a8be9e7c393e003d3b88f3
- https://git.kernel.org/stable/c/8d54001f8dccd56146973f23f3ab2ba037a21251
- https://git.kernel.org/stable/c/95d9e0803e51d5a24276b7643b244c7477daf463
- https://git.kernel.org/stable/c/9641bc4adf8446034e490ed543ae7e9833cfbdf5
- https://git.kernel.org/stable/c/a2773e0a4b79e7a6463abdffaf8cc4f24428ba18
- https://git.kernel.org/stable/c/a545a9403e04c6e17fdc04a26a61d9feebbba106
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49907
- https://nvd.nist.gov/vuln/detail/CVE-2024-49907
- https://launchpad.net/bugs/cve/CVE-2024-49907
- https://security-tracker.debian.org/tracker/CVE-2024-49907
- https://ubuntu.com/security/CVE-2024-49907
- https://git.kernel.org/linus/95d9e0803e51d5a24276b7643b244c7477daf463
Frequently Asked Questions
What is the severity of CVE-2024-49907?
CVE-2024-49907 has a severity level that indicates potential risk to system stability, particularly in managing display configurations.
How do I fix CVE-2024-49907?
To resolve CVE-2024-49907, update to a patched version of the Linux kernel that is above version 5.10.227 or one of the recommended secure versions.
Which versions of the Linux kernel are affected by CVE-2024-49907?
CVE-2024-49907 affects various Linux kernel versions from 5.10.224 to lower versions up to 6.11.
What is the impact of CVE-2024-49907?
The impact of CVE-2024-49907 may lead to potential dereferencing of null pointers, which can destabilize graphical performance.
Is CVE-2024-49907 exploitative in nature?
Yes, CVE-2024-49907 could be exploited under certain conditions, affecting systems with specific configurations.
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