CVE-2024-49915: drm/amd/display: Add NULL check for clk_mgr in dcn32_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 in dcn32_init_hw This commit addresses a potential null pointer dereference issue in the `dcn32_init_hw` function. The issue could occur when `dc->clk_mgr` is null. The fix adds a check to ensure `dc->clk_mgr` 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/dcn32/dcn32_hwseq.c:961 dcn32_init_hw() error: we previously assumed 'dc->clk_mgr' could be null (see line 782)
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<=5.10.226-1 | 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 |
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Reference Links
- https://git.kernel.org/stable/c/0d94d9cbd9fec7344d230c4f7b781826f7799c60
- https://git.kernel.org/stable/c/7d1854c86d02cea8f8a0c0ca05f4ab14292baf3d
- https://git.kernel.org/stable/c/c395fd47d1565bd67671f45cca281b3acc2c31ef
- https://git.kernel.org/stable/c/ec1be3c527b4a5fc85bcc1b0be7cec08bf60c796
- https://git.kernel.org/stable/c/f0454b3cb0584a6bf275aeb49be61a760fd546a2
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49915
- https://nvd.nist.gov/vuln/detail/CVE-2024-49915
- https://launchpad.net/bugs/cve/CVE-2024-49915
- https://security-tracker.debian.org/tracker/CVE-2024-49915
- https://ubuntu.com/security/CVE-2024-49915
- https://git.kernel.org/linus/c395fd47d1565bd67671f45cca281b3acc2c31ef
Frequently Asked Questions
What is the severity of CVE-2024-49915?
CVE-2024-49915 is classified as a medium severity vulnerability due to its potential for causing system instability.
How do I fix CVE-2024-49915?
To fix CVE-2024-49915, upgrade the Linux kernel to version 6.10.14 or later, or to one of the specified Debian packages such as 6.1.123-1 or 6.12.11-1.
What is the impact of CVE-2024-49915 on Linux systems?
The impact of CVE-2024-49915 can potentially lead to system crashes or unexpected behaviors due to a null pointer dereference.
Which versions of the Linux kernel are affected by CVE-2024-49915?
CVE-2024-49915 affects Linux kernel versions prior to 6.10.14 and those within the range of Linux kernel 6.11.0 to 6.11.3.
Is there a patch available for CVE-2024-49915?
Yes, the patch for CVE-2024-49915 has been included in the latest versions of the Linux kernel and certain Debian packages.
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