CVE-2023-53384 wifi: mwifiex: avoid possible NULL skb pointer dereference

What is CVE-2023-53384?

CVE-2023-53384 is a medium-severity vulnerability in Linux kernel, published on 18 Sep 2025. 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: mwifiex: avoid possible NULL skb pointer dereference

In 'mwifiex_handle_uap_rx_forward()', always check the value returned by 'skb_copy()' to avoid potential NULL pointer dereference in 'mwifiex_uap_queue_bridged_pkt()', and drop original skb in case of copying failure.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Weakness: CWE-476

Which versions are affected by CVE-2023-53384?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-53384?

Apply the vendor's patch.

Is CVE-2023-53384 being exploited?

There is no known exploitation of CVE-2023-53384 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 BELL-CVE-2023-53384, DEBIAN-CVE-2023-53384, GHSA-jhfh-g9jf-gfpv, UBUNTU-CVE-2023-53384.