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s390/qeth: Check CAP_NET_ADMIN for private ioctls

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Gate the SIOCDEVPRIVATE ioctl commands SIOC_QETH_ADP_SET_SNMP_CONTROL,
SIOC_QETH_GET_CARD_TYPE and SIOC_QETH_QUERY_OAT with CAP_NET_ADMIN
capable check to ensure unprivileged users cannot invoke them.

Fixes: 18787eeebd ("qeth: use ndo_siocdevprivate")
Cc: stable@vger.kernel.org
Suggested-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Aswin Karuvally <aswin@linux.ibm.com>
Link: https://patch.msgid.link/20260723140050.762991-1-aswin@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Aswin Karuvally 2026-07-23 16:00:50 +02:00 committed by Jakub Kicinski
parent 22666ba142
commit d211028bac
1 changed files with 3 additions and 0 deletions
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3
drivers/s390/net/qeth_core_main.c
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@ -6525,6 +6525,9 @@ int qeth_siocdevprivate(struct net_device *dev, struct ifreq *rq, void __user *d
struct qeth_card *card = dev->ml_priv;
int rc = 0;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
switch (cmd) {
case SIOC_QETH_ADP_SET_SNMP_CONTROL:
rc = qeth_snmp_command(card, data);