CVE-2024-47731 drivers/perf: Fix ali_drw_pmu driver interrupt status clearing

What is CVE-2024-47731?

CVE-2024-47731 is a medium-severity denial of service vulnerability in Linux kernel, published on 21 Oct 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

drivers/perf: Fix ali_drw_pmu driver interrupt status clearing

The alibaba_uncore_pmu driver forgot to clear all interrupt status in the interrupt processing function. After the PMU counter overflow interrupt occurred, an interrupt storm occurred, causing the system to hang.

Therefore, clear the correct interrupt status in the interrupt handling function to fix it.

Weakness: CWE-459

Which versions are affected by CVE-2024-47731?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-47731?

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-2024-47731 being exploited?

There is no known exploitation of CVE-2024-47731 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-51018, BELL-CVE-2024-47731, DEBIAN-CVE-2024-47731, GHSA-9298-29xj-7998, UBUNTU-CVE-2024-47731.