Linux kernel built with the 802.1Q/802.1ad VLAN(CONFIG_VLAN_8021Q) OR Virtual eXtensible Local Area Network(CONFIG_VXLAN) with Transparent Ethernet Bridging(TEB) GRO support, is vulnerable to a stack overflow issue. It could occur while receiving large packets via GRO path, as an unlimited recursion could unfold in both VLAN and TEB modules, leading to a stack corruption in the kernel.
Fixed by: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fcd91dd449867c6bfe56a81cabba76b829fd05cd Introduced by: https://git.kernel.org/linus/9b174d88c257150562b0101fcc6cb6c3cb74275c (v4.0-rc1) Intorduced by: https://git.kernel.org/linus/66e5133f19e901a044fa5eaeeb6ecff4545839e5 (v4.2-rc1) sys-kernel/gentoo-sources overview: 4.4: Fixed since 4.4.32 (3cb00b90e8b1bd59382f5e1304dd751f9674f027) 4.1: Fixed since 4.1.37 (fabaaaa96d54077b4a9f2c811e55dc09ff2874db)
4.4.41 and 4.1.37 are commited wait for stabilize
Fixed in 4.9