diff options
| author | Vasiliy Kovalev <kovalev@altlinux.org> | 2024-02-15 23:27:17 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-02-20 10:17:14 +0100 |
| commit | 5559cea2d5aa3018a5f00dd2aca3427ba09b386b (patch) | |
| tree | d4ce7eca14d1d723a0c6e195c106157b3bbba4ed /net | |
| parent | 40b9385dd8e6a0515e1c9cd06a277483556b7286 (diff) | |
ipv6: sr: fix possible use-after-free and null-ptr-deref
The pernet operations structure for the subsystem must be registered
before registering the generic netlink family.
Fixes: 915d7e5e5930 ("ipv6: sr: add code base for control plane support of SR-IPv6")
Signed-off-by: Vasiliy Kovalev <kovalev@altlinux.org>
Link: https://lore.kernel.org/r/20240215202717.29815-1-kovalev@altlinux.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/seg6.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/net/ipv6/seg6.c b/net/ipv6/seg6.c index 29346a6eec9f..35508abd76f4 100644 --- a/net/ipv6/seg6.c +++ b/net/ipv6/seg6.c @@ -512,22 +512,24 @@ int __init seg6_init(void) { int err; - err = genl_register_family(&seg6_genl_family); + err = register_pernet_subsys(&ip6_segments_ops); if (err) goto out; - err = register_pernet_subsys(&ip6_segments_ops); + err = genl_register_family(&seg6_genl_family); if (err) - goto out_unregister_genl; + goto out_unregister_pernet; #ifdef CONFIG_IPV6_SEG6_LWTUNNEL err = seg6_iptunnel_init(); if (err) - goto out_unregister_pernet; + goto out_unregister_genl; err = seg6_local_init(); - if (err) - goto out_unregister_pernet; + if (err) { + seg6_iptunnel_exit(); + goto out_unregister_genl; + } #endif #ifdef CONFIG_IPV6_SEG6_HMAC @@ -548,11 +550,11 @@ out_unregister_iptun: #endif #endif #ifdef CONFIG_IPV6_SEG6_LWTUNNEL -out_unregister_pernet: - unregister_pernet_subsys(&ip6_segments_ops); -#endif out_unregister_genl: genl_unregister_family(&seg6_genl_family); +#endif +out_unregister_pernet: + unregister_pernet_subsys(&ip6_segments_ops); goto out; } |