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

What is CVE-2024-43872?

CVE-2024-43872 is a high-severity denial of service vulnerability in Linux kernel, published on 21 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-667

Which versions are affected by CVE-2024-43872?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-43872?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2024-43872 being exploited?

There is no known exploitation of CVE-2024-43872 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-48477, AZL-48510, BELL-CVE-2024-43872, DEBIAN-CVE-2024-43872, GHSA-7j47-mxwc-g3xp, ROOT-OS-DEBIAN-11-CVE-2024-43872 and 4 more.