CVE-2024-38575: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: pcie: handle randbuf allocation failure The kzalloc() in brcmf_pcie_download_fw_nvram() will return null if the physical memory has run out. As a result, if we use get_random_bytes() to generate random bytes in the randbuf, the null pointer dereference bug will happen. In order to prevent allocation failure, this patch adds a separate function using buffer on kernel stack to generate random bytes in the randbuf, which could prevent the kernel stack from overflow.

Affected products

• Linux Linux Kernel: from 6.1.30, before 6.1.93 (fixed in 6.1.93); from 6.3.4, before 6.6.33 (fixed in 6.6.33); from 6.7, before 6.8.12 (fixed in 6.8.12); from 6.9, before 6.9.3 (fixed in 6.9.3)

Published 2024-06-19. Last modified 2026-06-17.