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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= c35105f375b530bc27e03ea9250b1c26dd4cae86, < 0eb2c0528e232b3c32cde9d5e1c9f80ba2996e49; >= 91918ce88d9fef408bb12c46a27c73d79b604c20, < c37466406f075476c2702ecc01917928af871f3b; >= 91918ce88d9fef408bb12c46a27c73d79b604c20, < 7c15eb344b0d4d3468c9b2a7591ad2b859b29b88; >= 91918ce88d9fef408bb12c46a27c73d79b604c20, < 3729ca9e48d19a03ae049e2bde510e161c2f3720; >= 91918ce88d9fef408bb12c46a27c73d79b604c20, < 316f790ebcf94bdf59f794b7cdea4068dc676d4c; ba72baed066f3bfa8b489e4b58f1fcaf51c04f83; >= 6.1.30, < 6.1.93; >= 6.3.4, < 6.4 |
| Linux | Linux | 6.4 |
References
- https://git.kernel.org/stable/c/0eb2c0528e232b3c32cde9d5e1c9f80ba2996e49Patch
- https://git.kernel.org/stable/c/316f790ebcf94bdf59f794b7cdea4068dc676d4cPatch
- https://git.kernel.org/stable/c/3729ca9e48d19a03ae049e2bde510e161c2f3720Patch
- https://git.kernel.org/stable/c/7c15eb344b0d4d3468c9b2a7591ad2b859b29b88Patch
- https://git.kernel.org/stable/c/c37466406f075476c2702ecc01917928af871f3bPatch
- https://git.kernel.org/stable/c/0eb2c0528e232b3c32cde9d5e1c9f80ba2996e49Patch
- https://git.kernel.org/stable/c/316f790ebcf94bdf59f794b7cdea4068dc676d4cPatch
- https://git.kernel.org/stable/c/3729ca9e48d19a03ae049e2bde510e161c2f3720Patch
- https://git.kernel.org/stable/c/7c15eb344b0d4d3468c9b2a7591ad2b859b29b88Patch
- https://git.kernel.org/stable/c/c37466406f075476c2702ecc01917928af871f3bPatch
Timeline
- Published
- Jun 19, 2024
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed