What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-08-21 · updated 2026-10-30
• Weakness: CWE-667

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.

Affected products

• Linux kernel: from 4.16 before 6.10.3 — fixed in 6.10.3
• Linux: 4.16 — fixed in 6.11

How to fix

Upgrade to a fixed version: Linux kernel 6.10.3; Linux 6.11. Check the vendor advisory for mitigations.

References

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

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