In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: validate pppoe header Ensure there is sufficient room to access the protocol field of the PPPoe header. Validate it once before the flowtable lookup, then use a helper function to access protocol field.
https://git.kernel.org/stable/c/d06977b9a4109f8738bb276125eb6a0b772bc433
https://git.kernel.org/stable/c/cf366ee3bc1b7d1c76a882640ba3b3f8f1039163
https://git.kernel.org/stable/c/a2471d271042ea18e8a6babc132a8716bb2f08b9
https://git.kernel.org/stable/c/8bf7c76a2a207ca2b4cfda0a279192adf27678d7
https://git.kernel.org/stable/c/87b3593bed1868b2d9fe096c01bcdf0ea86cbebf