CVE-2024-49905: drm/amd/display: Add null check for 'afb' in amdgpu_dm_plane_handle_cursor_update (v2)
First published: Mon Oct 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add null check for 'afb' in amdgpu_dm_plane_handle_cursor_update (v2) This commit adds a null check for the 'afb' variable in the amdgpu_dm_plane_handle_cursor_update function. Previously, 'afb' was assumed to be null, but was used later in the code without a null check. This could potentially lead to a null pointer dereference. Changes since v1: - Moved the null check for 'afb' to the line where 'afb' is used. (Alex) Fixes the below: drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_plane.c:1298 amdgpu_dm_plane_handle_cursor_update() error: we previously assumed 'afb' could be null (see line 1252)
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <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/75839e2365b666ff4e1b9047e442cab138eac4f6
- https://git.kernel.org/stable/c/9132882eaae4d21d2fc5843b3308379a481ebdf0
- https://git.kernel.org/stable/c/bd0e24e5e608ccb9fdda300bb974496d6d8cf57d
- https://git.kernel.org/stable/c/cd9e9e0852d501f169aa3bb34e4b413d2eb48c37
- https://git.kernel.org/stable/c/e4e26cbe34d7c1c1db5fb7b3101573c29866439f
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49905
- https://nvd.nist.gov/vuln/detail/CVE-2024-49905
- https://launchpad.net/bugs/cve/CVE-2024-49905
- https://security-tracker.debian.org/tracker/CVE-2024-49905
- https://ubuntu.com/security/CVE-2024-49905
- https://git.kernel.org/linus/cd9e9e0852d501f169aa3bb34e4b413d2eb48c37
Frequently Asked Questions
What is the severity of CVE-2024-49905?
CVE-2024-49905 has been classified as a moderate severity vulnerability affecting the Linux kernel.
How do I fix CVE-2024-49905?
To resolve CVE-2024-49905, update your Linux kernel to versions 6.1.123-1, 6.1.119-1, 6.12.11-1, or 6.12.12-1 or later.
Which Linux kernel versions are affected by CVE-2024-49905?
CVE-2024-49905 affects multiple Linux kernel versions ranging from 5.10.223-1 to 6.11.3, including specific versions of 6.2 and 6.6.
What is the nature of the vulnerability in CVE-2024-49905?
CVE-2024-49905 addresses a null pointer dereference vulnerability due to a missing null check in the amdgpu_dm_plane_handle_cursor_update function.
Is CVE-2024-49905 a local or remote exploit?
CVE-2024-49905 can be exploited locally, as it involves a function within the Linux kernel that can be triggered by user-space applications.
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