net: net_failover: Fix the deadlock in net_failover_slave_name_change()
This is a sibling fix of commit
b84c5632c7b3 ("net: net_failover: Fix the deadlock in slave register").
There is netdev_lock_ops() in the upper callers, so using netif_open()
instead of dev_open().
Call Trace:
__schedule+0x2bb/0x650
schedule+0x27/0xb0
schedule_preempt_disabled+0x15/0x30
__mutex_lock.constprop.0+0x550/0xaf0
__mutex_lock_slowpath+0x13/0x20
mutex_lock+0x3b/0x50
dev_open+0x3b/0xe0
net_failover_slave_name_change+0x22/0x40
failover_event+0xd4/0x1e0
notifier_call_chain+0x62/0xf0
raw_notifier_call_chain+0x16/0x30
call_netdevice_notifiers_info+0x50/0x80
netif_change_name+0x200/0x330
do_setlink.isra.0+0xb12/0xdf0
? security_capable+0x9a/0x1e0
? ns_capable+0x31/0x60
rtnl_setlink+0x302/0x670
? netlink_recvmsg+0x296/0x340
? security_capable+0x9a/0x1e0
? __pfx_rtnl_setlink+0x10/0x10
rtnetlink_rcv_msg+0x384/0x460
? __pfx_rtnetlink_rcv_msg+0x10/0x10
netlink_rcv_skb+0x61/0x120
rtnetlink_rcv+0x15/0x30
netlink_unicast+0x28f/0x3c0
netlink_sendmsg+0x216/0x450
__sys_sendto+0x222/0x230
__x64_sys_sendto+0x24/0x40
x64_sys_call+0x1d5d/0x2390
do_syscall_64+0x105/0x5a0
? do_syscall_64+0x140/0x5a0
? exc_page_fault+0x94/0x1e0
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Analysis
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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
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| Linux | Linux | affected |
|
No data.
No data.
No data available yet.
No vendor fix or workaround currently provided.
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Fri, 25 Sep 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-362 CWE-663 |
Fri, 25 Sep 2026 10:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: net: net_failover: Fix the deadlock in net_failover_slave_name_change() This is a sibling fix of commit b84c5632c7b3 ("net: net_failover: Fix the deadlock in slave register"). There is netdev_lock_ops() in the upper callers, so using netif_open() instead of dev_open(). Call Trace: __schedule+0x2bb/0x650 schedule+0x27/0xb0 schedule_preempt_disabled+0x15/0x30 __mutex_lock.constprop.0+0x550/0xaf0 __mutex_lock_slowpath+0x13/0x20 mutex_lock+0x3b/0x50 dev_open+0x3b/0xe0 net_failover_slave_name_change+0x22/0x40 failover_event+0xd4/0x1e0 notifier_call_chain+0x62/0xf0 raw_notifier_call_chain+0x16/0x30 call_netdevice_notifiers_info+0x50/0x80 netif_change_name+0x200/0x330 do_setlink.isra.0+0xb12/0xdf0 ? security_capable+0x9a/0x1e0 ? ns_capable+0x31/0x60 rtnl_setlink+0x302/0x670 ? netlink_recvmsg+0x296/0x340 ? security_capable+0x9a/0x1e0 ? __pfx_rtnl_setlink+0x10/0x10 rtnetlink_rcv_msg+0x384/0x460 ? __pfx_rtnetlink_rcv_msg+0x10/0x10 netlink_rcv_skb+0x61/0x120 rtnetlink_rcv+0x15/0x30 netlink_unicast+0x28f/0x3c0 netlink_sendmsg+0x216/0x450 __sys_sendto+0x222/0x230 __x64_sys_sendto+0x24/0x40 x64_sys_call+0x1d5d/0x2390 do_syscall_64+0x105/0x5a0 ? do_syscall_64+0x140/0x5a0 ? exc_page_fault+0x94/0x1e0 entry_SYSCALL_64_after_hwframe+0x76/0x7e | |
| Title | net: net_failover: Fix the deadlock in net_failover_slave_name_change() | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
|
MITRE
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-09-25T10:23:02.560Z
Reserved: 2026-09-25T10:18:58.205Z
Link: CVE-2026-97956
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-09-25T11:17:23.253
Modified: 2026-09-25T11:17:23.253
Link: CVE-2026-97956
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-09-25T18:15:16Z