CVE-2024-49914: drm/amd/display: Add null check for pipe_ctx->plane_state in dcn20_program_pipe
First published: Mon Oct 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add null check for pipe_ctx->plane_state in dcn20_program_pipe This commit addresses a null pointer dereference issue in the `dcn20_program_pipe` function. The issue could occur when `pipe_ctx->plane_state` is null. The fix adds a check to ensure `pipe_ctx->plane_state` is not null before accessing. This prevents a null pointer dereference. Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn20/dcn20_hwseq.c:1925 dcn20_program_pipe() error: we previously assumed 'pipe_ctx->plane_state' could be null (see line 1877)
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 | 6.12.21-1 |
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Reference Links
- https://git.kernel.org/stable/c/68f75e6f08aad66069a629db8d7840919156c761
- https://git.kernel.org/stable/c/65a6fee22d5cfa645cb05489892dc9cd3d142fc2
- https://git.kernel.org/stable/c/8e4ed3cf1642df0c4456443d865cff61a9598aa8
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49914
- https://nvd.nist.gov/vuln/detail/CVE-2024-49914
- https://launchpad.net/bugs/cve/CVE-2024-49914
- https://security-tracker.debian.org/tracker/CVE-2024-49914
- https://ubuntu.com/security/CVE-2024-49914
- https://git.kernel.org/linus/8e4ed3cf1642df0c4456443d865cff61a9598aa8
Frequently Asked Questions
What is the severity of CVE-2024-49914?
CVE-2024-49914 has a medium severity level due to its potential for causing a denial of service through a null pointer dereference.
How do I fix CVE-2024-49914?
To fix CVE-2024-49914, upgrade your Linux kernel to version 6.12.12-1, 6.12.15-1, or a later version that resolves this vulnerability.
What impact does CVE-2024-49914 have on systems?
CVE-2024-49914 can lead to system instability and crashes if exploited, affecting the availability of the affected system.
Which versions of the Linux kernel are vulnerable to CVE-2024-49914?
Linux kernel versions up to and including 6.11.3 are vulnerable to CVE-2024-49914.
Is CVE-2024-49914 related to specific hardware components?
CVE-2024-49914 is associated with the AMD display driver within the Linux kernel.
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