In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: incorrect pppoe tuple pppoe traffic reaching ingress path does not match the flowtable entry because the pppoe header is expected to be at the network header offset. This bug causes a mismatch in the flow table lookup, so pppoe packets enter the classical forwarding path.
https://git.kernel.org/stable/c/f1c3c61701a0b12f4906152c1626a5de580ea3d2
https://git.kernel.org/stable/c/e719b52d0c56989b0f3475a03a6d64f182c85b56
https://git.kernel.org/stable/c/e3f078103421642fcd5f05c5e70777feb10f000d
https://git.kernel.org/stable/c/6db5dc7b351b9569940cd1cf445e237c42cd6d27
https://git.kernel.org/stable/c/4ed82dd368ad883dc4284292937b882f044e625d