CVE-2023-52525: 
Linux Kernel vulnerability analysis and mitigation

CVE-2023-52525 is an out-of-bounds vulnerability discovered in the mwifiexprocessrx_packet function of the Linux kernel's Marvell WiFi driver (mwifiex). The vulnerability was disclosed on March 2, 2024, affecting multiple versions of the Linux kernel including 4.14.326, 4.19.295, 5.4.257, and various versions in the 5.10, 5.15, 6.1, and 6.5 series (NVD).

The vulnerability stems from improper boundary checks when accessing RFC1042 headers in received packets. The original code incorrectly skipped processing packets when the buffer size was insufficient, even for packets that didn't require RFC1042 header processing. The issue has been assigned a CVSS v3.1 base score of 7.1 (High), with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H, indicating local access requirements with potential for high confidentiality and availability impacts (NVD).

The vulnerability could lead to incorrect packet processing and potential out-of-bounds access, which may result in system crashes or memory corruption. This could affect the stability and security of systems using the affected Linux kernel versions with the Marvell WiFi driver (Red Hat).

A fix has been implemented that modifies the boundary check condition in mwifiexprocessrx_packet to only skip the code path trying to access the RFC1042 headers when the buffer is too small, allowing the driver to still process packets without RFC1042 headers. The fix has been merged into the Linux kernel (Kernel Patch).