CVE-2024-49917: drm/amd/display: Add NULL check for clk_mgr and clk_mgr->funcs in dcn30_init_hw
First published: Mon Oct 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add NULL check for clk_mgr and clk_mgr->funcs in dcn30_init_hw This commit addresses a potential null pointer dereference issue in the `dcn30_init_hw` function. The issue could occur when `dc->clk_mgr` or `dc->clk_mgr->funcs` is null. The fix adds a check to ensure `dc->clk_mgr` and `dc->clk_mgr->funcs` is not null before accessing its functions. This prevents a potential null pointer dereference. Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c:789 dcn30_init_hw() error: we previously assumed 'dc->clk_mgr' could be null (see line 628)
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <6.10.14 | |
| Linux Kernel | >=6.11<6.11.3 | |
| debian/linux | <=5.10.223-1<=5.10.234-1 | 6.1.129-1 6.1.128-1 6.12.19-1 6.12.20-1 |
| debian/linux-6.1 | 6.1.128-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/205e3b96cc9aa9211fd2c849a16245cf236b2d36
- https://git.kernel.org/stable/c/23cb6139543580dc36743586ca86fbb3f7ab2c9d
- https://git.kernel.org/stable/c/5443c83eb8fd2f88c71ced38848fbf744d6206a2
- https://git.kernel.org/stable/c/56c326577971adc3a230f29dfd3aa3abdd505f5d
- https://git.kernel.org/stable/c/cba7fec864172dadd953daefdd26e01742b71a6a
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49917
- https://nvd.nist.gov/vuln/detail/CVE-2024-49917
- https://launchpad.net/bugs/cve/CVE-2024-49917
- https://security-tracker.debian.org/tracker/CVE-2024-49917
- https://ubuntu.com/security/CVE-2024-49917
- https://git.kernel.org/linus/cba7fec864172dadd953daefdd26e01742b71a6a
Frequently Asked Questions
What is the severity of CVE-2024-49917?
CVE-2024-49917 has a medium severity rating due to the potential for null pointer dereferences in the Linux kernel.
How do I fix CVE-2024-49917?
To fix CVE-2024-49917, update the Linux kernel to version 6.10.14 or later, or apply one of the specific patches.
Which versions of the Linux kernel are affected by CVE-2024-49917?
CVE-2024-49917 affects Linux kernel versions below 6.10.14 and between 6.11 and 6.11.3.
Can CVE-2024-49917 lead to system instability?
Yes, CVE-2024-49917 can potentially lead to system instability by causing null pointer dereference issues.
Is CVE-2024-49917 related to the AMD graphics driver?
Yes, CVE-2024-49917 specifically involves the AMD display driver functionality in the Linux kernel.
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