CVE-2023-52593 wifi: wfx: fix possible NULL pointer dereference in wfx_set_mfp_ap()

What is CVE-2023-52593?

CVE-2023-52593 is a medium-severity vulnerability in Linux kernel, published on 6 Mar 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:

wifi: wfx: fix possible NULL pointer dereference in wfx_set_mfp_ap()

Since 'ieee80211_beacon_get()' can return NULL, 'wfx_set_mfp_ap()' should check the return value before examining skb data. So convert the latter to return an appropriate error code and propagate it to return from 'wfx_start_ap()' as well. Compile tested only.

Weakness: CWE-476

Which versions are affected by CVE-2023-52593?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-52593?

Apply the vendor's patch.

Is CVE-2023-52593 being exploited?

There is no known exploitation of CVE-2023-52593 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-54262, BELL-CVE-2023-52593, DEBIAN-CVE-2023-52593, GHSA-3h2v-h2q9-f9r6, ROOT-OS-DEBIAN-11-CVE-2023-52593, ROOT-OS-UBUNTU-2204-CVE-2023-52593 and 1 more.