Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.4 10/58] netfilter: ipvs: make global sysctl readonly in non-init netns | Date | Mon, 25 Oct 2021 21:14:27 +0200 |
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From: Antoine Tenart <atenart@kernel.org>
[ Upstream commit 174c376278949c44aad89c514a6b5db6cee8db59 ]
Because the data pointer of net/ipv4/vs/debug_level is not updated per netns, it must be marked as read-only in non-init netns.
Fixes: c6d2d445d8de ("IPVS: netns, final patch enabling network name space.") Signed-off-by: Antoine Tenart <atenart@kernel.org> Acked-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- net/netfilter/ipvs/ip_vs_ctl.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index f93fa0e21097..07242503d74d 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -4047,6 +4047,11 @@ static int __net_init ip_vs_control_net_init_sysctl(struct netns_ipvs *ipvs) tbl[idx++].data = &ipvs->sysctl_conn_reuse_mode; tbl[idx++].data = &ipvs->sysctl_schedule_icmp; tbl[idx++].data = &ipvs->sysctl_ignore_tunneled; +#ifdef CONFIG_IP_VS_DEBUG + /* Global sysctls must be ro in non-init netns */ + if (!net_eq(net, &init_net)) + tbl[idx++].mode = 0444; +#endif ipvs->sysctl_hdr = register_net_sysctl(net, "net/ipv4/vs", tbl); if (ipvs->sysctl_hdr == NULL) { -- 2.33.0
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