CVE-2024-44970 net/mlx5e: SHAMPO, Fix invalid WQ linked list unlink

What is CVE-2024-44970?

CVE-2024-44970 is a critical memory corruption vulnerability in Linux kernel, published on 4 Sep 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:

net/mlx5e: SHAMPO, Fix invalid WQ linked list unlink

When all the strides in a WQE have been consumed, the WQE is unlinked from the WQ linked list (mlx5_wq_ll_pop()). For SHAMPO, it is possible to receive CQEs with 0 consumed strides for the same WQE even after the WQE is fully consumed and unlinked. This triggers an additional unlink for the same wqe which corrupts the linked list.

Fix this scenario by accepting 0 sized consumed strides without unlinking the WQE again.

Which versions are affected by CVE-2024-44970?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-44970?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2024-44970 being exploited?

There is no known exploitation of CVE-2024-44970 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-49875, BELL-CVE-2024-44970, DEBIAN-CVE-2024-44970, GHSA-4qww-pqq9-xrw5, ROOT-OS-UBUNTU-2204-CVE-2024-44970, UBUNTU-CVE-2024-44970.