Entreprise française de cybersécurité depuis 2004
☎ 03 60 47 09 81 - info@securiteinfo.com
☎ 03 60 47 09 81 - info@securiteinfo.com
In the Linux kernel, the following vulnerability has been resolved:wifi: brcmfmac: pcie: handle randbuf allocation failureThe kzalloc() in brcmf_pcie_download_fw_nvram() will return nullif the physical memory has run out. As a result, if we useget_random_bytes() to generate random bytes in the randbuf, thenull pointer dereference bug will happen.In order to prevent allocation failure, this patch adds a separatefunction using buffer on kernel stack to generate random bytes inthe randbuf, which could prevent the kernel stack from overflow.
No PoCs from references.
- https://github.com/owenneal/lkml-patch-analysis