CVE-2025-22005
Description
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.
How to fix
- linux linux_kernel5.4.292, 5.10.236, 6.1.132, 6.6.85, 6.12.21, 6.13.9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.3 ≤ v < 5.4.292, 5.5 ≤ v < 5.10.236, 5.16 ≤ v < 6.1.132, 6.2 ≤ v < 6.6.85, 6.7 ≤ v < 6.12.21, 6.13 ≤ v < 6.13.9, 6.14 | 5.4.292, 5.10.236, 6.1.132, 6.6.85, 6.12.21, 6.13.9 |
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