CVE-2026-64538

CVE-2026-64538 concerns a Linux kernel vulnerability where fib6_nh_mtu_change() dereferences idev->cnf.mtu6 after re-fetching idev with __in6_dev_get(arg->dev) without a NULL check. This can occur because addrconf_ifdown() clears dev->ip6_ptr after tb6_lock is released, allowing an RA-dr...

PT-2026-65213

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A null-pointer dereference exists in the IPv6 implementation. The function fib6 nh mtu change re-fetches idev using in6 dev getarg-dev and accesses idev-cnf.mtu6 without verifying if ide...