{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.170-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.85-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.19.12-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  wifi: virt_wifi: remove SET_NETDEV_DEV to avoid use-after-free  Currently we execute `SET_NETDEV_DEV(dev, \u0026priv-\u003elowerdev-\u003edev)` for the virt_wifi net devices. However, unregistering a virt_wifi device in netdev_run_todo() can happen together with the device referenced by SET_NETDEV_DEV().  It can result in use-after-free during the ethtool operations performed on a virt_wifi device that is currently being unregistered. Such a net device can have the `dev.parent` field pointing to the freed memory, but ethnl_ops_begin() calls `pm_runtime_get_sync(dev-\u003edev.parent)`.  Let's remove SET_NETDEV_DEV for virt_wifi to avoid bugs like this:   ==================================================================  BUG: KASAN: slab-use-after-free in __pm_runtime_resume+0xe2/0xf0  Read of size 2 at addr ffff88810cfc46f8 by task pm/606   Call Trace:   \u003cTASK\u003e   dump_stack_lvl+0x4d/0x70   print_report+0x170/0x4f3   ? __pfx__raw_spin_lock_irqsave+0x10/0x10   kasan_report+0xda/0x110   ? __pm_runtime_resume+0xe2/0xf0   ? __pm_runtime_resume+0xe2/0xf0   __pm_runtime_resume+0xe2/0xf0   ethnl_ops_begin+0x49/0x270   ethnl_set_features+0x23c/0xab0   ? __pfx_ethnl_set_features+0x10/0x10   ? kvm_sched_clock_read+0x11/0x20   ? local_clock_noinstr+0xf/0xf0   ? local_clock+0x10/0x30   ? kasan_save_track+0x25/0x60   ? __kasan_kmalloc+0x7f/0x90   ? genl_family_rcv_msg_attrs_parse.isra.0+0x150/0x2c0   genl_family_rcv_msg_doit+0x1e7/0x2c0   ? __pfx_genl_family_rcv_msg_doit+0x10/0x10   ? __pfx_cred_has_capability.isra.0+0x10/0x10   ? stack_trace_save+0x8e/0xc0   genl_rcv_msg+0x411/0x660   ? __pfx_genl_rcv_msg+0x10/0x10   ? __pfx_ethnl_set_features+0x10/0x10   netlink_rcv_skb+0x121/0x380   ? __pfx_genl_rcv_msg+0x10/0x10   ? __pfx_netlink_rcv_skb+0x10/0x10   ? __pfx_down_read+0x10/0x10   genl_rcv+0x23/0x30   netlink_unicast+0x60f/0x830   ? __pfx_netlink_unicast+0x10/0x10   ? __pfx___alloc_skb+0x10/0x10   netlink_sendmsg+0x6ea/0xbc0   ? __pfx_netlink_sendmsg+0x10/0x10   ? __futex_queue+0x10b/0x1f0   ____sys_sendmsg+0x7a2/0x950   ? copy_msghdr_from_user+0x26b/0x430   ? __pfx_____sys_sendmsg+0x10/0x10   ? __pfx_copy_msghdr_from_user+0x10/0x10   ___sys_sendmsg+0xf8/0x180   ? __pfx____sys_sendmsg+0x10/0x10   ? __pfx_futex_wait+0x10/0x10   ? fdget+0x2e4/0x4a0   __sys_sendmsg+0x11f/0x1c0   ? __pfx___sys_sendmsg+0x10/0x10   do_syscall_64+0xe2/0x570   ? exc_page_fault+0x66/0xb0   entry_SYSCALL_64_after_hwframe+0x77/0x7f   \u003c/TASK\u003e  This fix may be combined with another one in the ethtool subsystem: https://lore.kernel.org/all/20260322075917.254874-1-alex.popov@linux.com/T/#u",
  "id": "DEBIAN-CVE-2026-31695",
  "modified": "2026-09-14T16:47:28.886489082Z",
  "published": "2026-05-01T14:16:19.250Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-31695"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-31695"
  ]
}