CVE-2026-97956 (GCVE-0-2026-97956)
Vulnerability from cvelistv5
Published
2026-09-25 10:23
Modified
2026-10-19 09:11
Severity ?
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 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
References
Impacted products
Vendor Product Version
Linux Linux Version: 7e4d784f5810bba76c4593791028e13cce4af547
Version: 7e4d784f5810bba76c4593791028e13cce4af547
Version: 7e4d784f5810bba76c4593791028e13cce4af547
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/net_failover.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4b20e66d2e52d3628db4dccc1a33f134e73375d5",
              "status": "affected",
              "version": "7e4d784f5810bba76c4593791028e13cce4af547",
              "versionType": "git"
            },
            {
              "lessThan": "c49bfa2c5dbd89f7683c26fc08b11e7369ea11e5",
              "status": "affected",
              "version": "7e4d784f5810bba76c4593791028e13cce4af547",
              "versionType": "git"
            },
            {
              "lessThan": "985a663bf00799c1daf1c5789efa6406958780c8",
              "status": "affected",
              "version": "7e4d784f5810bba76c4593791028e13cce4af547",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/net_failover.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.7",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: net_failover: Fix the deadlock in net_failover_slave_name_change()\n\nThis is a sibling fix of commit\nb84c5632c7b3 (\"net: net_failover: Fix the deadlock in slave register\").\nThere is netdev_lock_ops() in the upper callers, so using netif_open()\ninstead of dev_open().\n\nCall Trace:\n __schedule+0x2bb/0x650\n schedule+0x27/0xb0\n schedule_preempt_disabled+0x15/0x30\n __mutex_lock.constprop.0+0x550/0xaf0\n __mutex_lock_slowpath+0x13/0x20\n mutex_lock+0x3b/0x50\n dev_open+0x3b/0xe0\n net_failover_slave_name_change+0x22/0x40\n failover_event+0xd4/0x1e0\n notifier_call_chain+0x62/0xf0\n raw_notifier_call_chain+0x16/0x30\n call_netdevice_notifiers_info+0x50/0x80\n netif_change_name+0x200/0x330\n do_setlink.isra.0+0xb12/0xdf0\n ? security_capable+0x9a/0x1e0\n ? ns_capable+0x31/0x60\n rtnl_setlink+0x302/0x670\n ? netlink_recvmsg+0x296/0x340\n ? security_capable+0x9a/0x1e0\n ? __pfx_rtnl_setlink+0x10/0x10\n rtnetlink_rcv_msg+0x384/0x460\n ? __pfx_rtnetlink_rcv_msg+0x10/0x10\n netlink_rcv_skb+0x61/0x120\n rtnetlink_rcv+0x15/0x30\n netlink_unicast+0x28f/0x3c0\n netlink_sendmsg+0x216/0x450\n __sys_sendto+0x222/0x230\n __x64_sys_sendto+0x24/0x40\n x64_sys_call+0x1d5d/0x2390\n do_syscall_64+0x105/0x5a0\n ? do_syscall_64+0x140/0x5a0\n ? exc_page_fault+0x94/0x1e0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:11:22.384Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4b20e66d2e52d3628db4dccc1a33f134e73375d5"
        },
        {
          "url": "https://git.kernel.org/stable/c/c49bfa2c5dbd89f7683c26fc08b11e7369ea11e5"
        },
        {
          "url": "https://git.kernel.org/stable/c/985a663bf00799c1daf1c5789efa6406958780c8"
        }
      ],
      "title": "net: net_failover: Fix the deadlock in net_failover_slave_name_change()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97956",
    "datePublished": "2026-09-25T10:23:02.560Z",
    "dateReserved": "2026-09-25T10:18:58.205Z",
    "dateUpdated": "2026-10-19T09:11:22.384Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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