In the Linux kernel, the following vulnerability has been resolved:

ipvs: ensure inner headers in ICMP errors are in headroom

Sashiko points out that after stripping the outer headers
with pskb_pull() we should ensure the inner IP headers
in ICMP errors from tunnels are present in the skb headroom
for functions like ipv4_update_pmtu(), icmp_send() and
IP_VS_DBG().

Also, add more checks for the length of the inner headers.

https://git.kernel.org/stable/c/19657b3a17b774ae4e2f2635b5ae8638c9344a40

https://git.kernel.org/stable/c/3f7a535ff0fa627a0132803e4c2f903ceffcbc1c

https://git.kernel.org/stable/c/8f48cfe657409fb5c7ba0521b14da6d47546d9cf

https://git.kernel.org/stable/c/92185d6f7819bc558939ae83de7b1abe90e3b5c2

https://git.kernel.org/stable/c/9bc9b95aee2b2e3f1301a16a67ee504960402875

https://git.kernel.org/stable/c/a735f9964a3d9ed97daf9b08507f8b5bcafe6326

https://git.kernel.org/stable/c/dac813101914c21219ac221a60a31a11bc90e7ec

https://git.kernel.org/stable/c/dd22f74a09e25ca298ced0a3763ef353242cb78d

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