In the Linux kernel, the following vulnerability has been resolved: ipv6: add NULL checks for idev in SRv6 paths __in6devget() can return NULL when the device has no IPv6 configuration (e.g. MTU < IPV6_MINMTU or after NETDEVUNREGISTER). Add NULL checks for idev returned by _in6devget() in both seg6hmacvalidateskb() and ipv6srhrcv() to prevent potential NULL pointer dereferences.