CVE-2025-22005

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw(). fib_check_nh_v6_gw() expects that fib6_nh_init() cleans up everything when it fails. Commit 7dd73168e273 ("ipv6: Always allocate pcpu memory in a fib6_nh") moved fib_nh_common_init() before alloc_percpu_gfp() within fib6_nh_init() but forgot to add cleanup for fib6_nh->nh_common.nhc_pcpu_rth_output in case it fails to allocate fib6_nh->rt6i_pcpu, resulting in memleak. Let's call fib_nh_common_release() and clear nhc_pcpu_rth_output in the error path. Note that we can remove the fib6_nh_release() call in nh_create_ipv6() later in net-next.git.

• linux linux kernel (>= 5.3 < 5.4.292) • linux linux kernel (>= 5.5 < 5.10.236) • linux linux kernel (>= 5.16 < 6.1.132) • linux linux kernel (>= 6.2 < 6.6.85) • linux linux kernel (>= 6.7 < 6.12.21) • linux linux kernel (>= 6.13 < 6.13.9) • linux linux kernel 6.14