Kernel/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2025-01-04 12:16:41 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

sysctl: expose all net/core sysctls inside netns

Browse Source 
All were not visible to the non-priv users inside netns. However,
with 4ecb90090c ("sysctl: allow override of /proc/sys/net with
CAP_NET_ADMIN"), these vars are protected from getting modified.
A proc with capable(CAP_NET_ADMIN) can change the values so
not having them visible inside netns is just causing nuisance to
process that check certain values (e.g. net.core.somaxconn) and
see different behavior in root-netns vs. other-netns

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mahesh Bandewar 2023-01-04 18:28:42 -08:00 committed by David S. Miller
parent 3d759e9e24
commit 6b754d7bd0
1 changed files with 0 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
net/core/sysctl_net_core.c
View File

@ -643,11 +643,6 @@ static __net_init int sysctl_core_net_init(struct net *net)
for (tmp = tbl; tmp->procname; tmp++)
tmp->data += (char *)net - (char *)&init_net;
/* Don't export any sysctls to unprivileged users */
if (net->user_ns != &init_user_ns) {
tbl[0].procname = NULL;
}
}
net->core.sysctl_hdr = register_net_sysctl(net, "net/core", tbl);