[PATCH net] s390/qeth: Check CAP_NET_ADMIN for private ioctls
From: Aswin Karuvally <aswin@linux.ibm.com>
Date: 2026-07-23 14:01:10
Also in:
linux-s390, stable
Subsystem:
networking drivers, s390 architecture, s390 network drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Heiko Carstens, Vasily Gorbik, Alexander Gordeev, Alexandra Winter, Aswin Karuvally, Linus Torvalds
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: 18787eeebd71 ("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>
---
drivers/s390/net/qeth_core_main.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 20fb0d2e02a9..f18eed9df3c7 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c@@ -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);
--
2.53.0