CVE-2024-56660 net/mlx5: DR, prevent potential error pointer dereference

What is CVE-2024-56660?

CVE-2024-56660 is a medium-severity vulnerability in Linux kernel, published on 27 Dec 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:

net/mlx5: DR, prevent potential error pointer dereference

The dr_domain_add_vport_cap() function generally returns NULL on error but sometimes we want it to return ERR_PTR(-EBUSY) so the caller can retry. The problem here is that "ret" can be either -EBUSY or -ENOMEM and if it's and -ENOMEM then the error pointer is propogated back and eventually dereferenced in dr_ste_v0_build_src_gvmi_qpn_tag().

Weakness: CWE-476

Which versions are affected by CVE-2024-56660?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-56660?

Apply the vendor's patch.

Is CVE-2024-56660 being exploited?

There is no known exploitation of CVE-2024-56660 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-54845, BELL-CVE-2024-56660, DEBIAN-CVE-2024-56660, GHSA-4whv-g373-hpgc, ROOT-OS-UBUNTU-2204-CVE-2024-56660, UBUNTU-CVE-2024-56660.