CVE-2023-4459 Kernel: vmxnet3: null pointer dereference in vmxnet3_rq_cleanup()

What is CVE-2023-4459?

CVE-2023-4459 is a medium-severity vulnerability in Linux kernel, published on 21 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A NULL pointer dereference flaw was found in vmxnet3_rq_cleanup in drivers/net/vmxnet3/vmxnet3_drv.c in the networking sub-component in vmxnet3 in the Linux Kernel. This issue may allow a local attacker with normal user privilege to cause a denial of service due to a missing sanity check during cleanup.

Weakness: CWE-476

Which versions are affected by CVE-2023-4459?

It affects 2 products.

Products include Linux kernel, Redhat Enterprise Linux.

How do I fix CVE-2023-4459?

Apply the vendor's patch.

Is CVE-2023-4459 being exploited?

There is no known exploitation of CVE-2023-4459 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-27982, DEBIAN-CVE-2023-4459, GHSA-p788-v6c7-5vqg, UBUNTU-CVE-2023-4459.