vulnerability
Red Hat: CVE-2024-38575: kernel: wifi: brcmfmac: pcie: handle randbuf allocation failure (Multiple Advisories)
Severity | CVSS | Published | Added | Modified |
---|---|---|---|---|
4 | (AV:L/AC:L/Au:M/C:N/I:N/A:C) | 06/19/2024 | 08/12/2024 | 03/10/2025 |
Severity
4
CVSS
(AV:L/AC:L/Au:M/C:N/I:N/A:C)
Published
06/19/2024
Added
08/12/2024
Modified
03/10/2025
Description
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.
Solution(s)
redhat-upgrade-kernelredhat-upgrade-kernel-rt

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