---
id: CVE-2026-97956
title: |-
  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 reg…
summary: |-
  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 reg…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 7e4d784f5810bba76c4593791028e13cce4af547 <
    4b20e66d2e52d3628db4dccc1a33f134e73375d5
  - >-
    Linux >= 7e4d784f5810bba76c4593791028e13cce4af547 <
    c49bfa2c5dbd89f7683c26fc08b11e7369ea11e5
  - >-
    Linux >= 7e4d784f5810bba76c4593791028e13cce4af547 <
    985a663bf00799c1daf1c5789efa6406958780c8
  - Linux 6.15
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T11:17:23.253'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97956'
references:
  - url: 'https://git.kernel.org/stable/c/4b20e66d2e52d3628db4dccc1a33f134e73375d5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/985a663bf00799c1daf1c5789efa6406958780c8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c49bfa2c5dbd89f7683c26fc08b11e7369ea11e5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-25T11:06:38.876Z'
---

## Overview

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

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.