CVE-2024-43904: drm/amd/display: Add null checks for 'stream' and 'plane' before dereferencing
First published: Mon Aug 26 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add null checks for 'stream' and 'plane' before dereferencing This commit adds null checks for the 'stream' and 'plane' variables in the dcn30_apply_idle_power_optimizations function. These variables were previously assumed to be null at line 922, but they were used later in the code without checking if they were null. This could potentially lead to a null pointer dereference, which would cause a crash. The null checks ensure that 'stream' and 'plane' are not null before they are used, preventing potential crashes. Fixes the below static smatch checker: drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c:938 dcn30_apply_idle_power_optimizations() error: we previously assumed 'stream' could be null (see line 922) drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c:940 dcn30_apply_idle_power_optimizations() error: we previously assumed 'plane' could be null (see line 922)
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <6.10.5 | |
| debian/linux | <=5.10.223-1<=5.10.226-1 | 6.1.123-1 6.1.119-1 6.12.11-1 |
| debian/linux-6.1 | 6.1.119-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/10c20d79d59cadfe572480d98cec271a89ffb024
- https://git.kernel.org/stable/c/15c2990e0f0108b9c3752d7072a97d45d4283aea
- https://git.kernel.org/stable/c/16a8a2a839d19c4cf7253642b493ffb8eee1d857
- https://git.kernel.org/stable/c/5e84eda48ffb2363437db44bbd0235594f8a58f9
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-43904
- https://nvd.nist.gov/vuln/detail/CVE-2024-43904
- https://launchpad.net/bugs/cve/CVE-2024-43904
- https://security-tracker.debian.org/tracker/CVE-2024-43904
- https://ubuntu.com/security/CVE-2024-43904
- https://git.kernel.org/linus/15c2990e0f0108b9c3752d7072a97d45d4283aea
Frequently Asked Questions
What is the severity of CVE-2024-43904?
CVE-2024-43904 has not been assigned a specific severity rating, but it involves a potential null dereference vulnerability in the Linux kernel.
How do I fix CVE-2024-43904?
To fix CVE-2024-43904, update your Linux kernel to version 6.10.5 or later, or apply the relevant patches if using earlier versions.
Which versions of the Linux kernel are affected by CVE-2024-43904?
CVE-2024-43904 affects Linux kernel versions prior to 6.10.5, including specific Debian packages up to version 5.10.226-1.
What components are impacted by CVE-2024-43904?
The vulnerability within CVE-2024-43904 specifically impacts the AMD display drivers in the Linux kernel.
Is there a workaround for CVE-2024-43904?
There are no recommended workarounds for CVE-2024-43904; applying the patch or upgrading to a safe version is advised.
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