{
  "cveId": "CVE-2026-23046",
  "url": "https://patchblox.com/security/cve/CVE-2026-23046",
  "summary": "CVE-2026-23046 is fixed in linux on 1 platform by DEBIAN-CVE-2026-23046 (version 6.18.8-1), released February 4, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  virtio_net: fix device mismatch in devm_kzalloc/...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  virtio_net: fix device mismatch in devm_kzalloc/devm_kfree  Initial rss_hdr allocation uses virtio_device-\u003Edevice, but virtnet_set_queues() frees using net_device-\u003Edevice. This device mismatch causing below devres warning  [ 3788.514041] ------------[ cut here ]------------ [ 3788.514044] WARNING: drivers/base/devres.c:1095 at devm_kfree\u002B0x84/0x98, CPU#16: vdpa/1463 [ 3788.514054] Modules linked in: octep_vdpa virtio_net virtio_vdpa [last unloaded: virtio_vdpa] [ 3788.514064] CPU: 16 UID: 0 PID: 1463 Comm: vdpa Tainted: G        W           6.18.0 #10 PREEMPT [ 3788.514067] Tainted: [W]=WARN [ 3788.514069] Hardware name: Marvell CN106XX board (DT) [ 3788.514071] pstate: 63400009 (nZCv daif \u002BPAN -UAO \u002BTCO \u002BDIT -SSBS BTYPE=--) [ 3788.514074] pc : devm_kfree\u002B0x84/0x98 [ 3788.514076] lr : devm_kfree\u002B0x54/0x98 [ 3788.514079] sp : ffff800084e2f220 [ 3788.514080] x29: ffff800084e2f220 x28: ffff0003b2366000 x27: 000000000000003f [ 3788.514085] x26: 000000000000003f x25: ffff000106f17c10 x24: 0000000000000080 [ 3788.514089] x23: ffff00045bb8ab08 x22: ffff00045bb8a000 x21: 0000000000000018 [ 3788.514093] x20: ffff0004355c3080 x19: ffff00045bb8aa00 x18: 0000000000080000 [ 3788.514098] x17: 0000000000000040 x16: 000000000000001f x15: 000000000007ffff [ 3788.514102] x14: 0000000000000488 x13: 0000000000000005 x12: 00000000000fffff [ 3788.514106] x11: ffffffffffffffff x10: 0000000000000005 x9 : ffff800080c8c05c [ 3788.514110] x8 : ffff800084e2eeb8 x7 : 0000000000000000 x6 : 000000000000003f [ 3788.514115] x5 : ffff8000831bafe0 x4 : ffff800080c8b010 x3 : ffff0004355c3080 [ 3788.514119] x2 : ffff0004355c3080 x1 : 0000000000000000 x0 : 0000000000000000 [ 3788.514123] Call trace: [ 3788.514125]  devm_kfree\u002B0x84/0x98 (P) [ 3788.514129]  virtnet_set_queues\u002B0x134/0x2e8 [virtio_net] [ 3788.514135]  virtnet_probe\u002B0x9c0/0xe00 [virtio_net] [ 3788.514139]  virtio_dev_probe\u002B0x1e0/0x338 [ 3788.514144]  really_probe\u002B0xc8/0x3a0 [ 3788.514149]  __driver_probe_device\u002B0x84/0x170 [ 3788.514152]  driver_probe_device\u002B0x44/0x120 [ 3788.514155]  __device_attach_driver\u002B0xc4/0x168 [ 3788.514158]  bus_for_each_drv\u002B0x8c/0xf0 [ 3788.514161]  __device_attach\u002B0xa4/0x1c0 [ 3788.514164]  device_initial_probe\u002B0x1c/0x30 [ 3788.514168]  bus_probe_device\u002B0xb4/0xc0 [ 3788.514170]  device_add\u002B0x614/0x828 [ 3788.514173]  register_virtio_device\u002B0x214/0x258 [ 3788.514175]  virtio_vdpa_probe\u002B0xa0/0x110 [virtio_vdpa] [ 3788.514179]  vdpa_dev_probe\u002B0xa8/0xd8 [ 3788.514183]  really_probe\u002B0xc8/0x3a0 [ 3788.514186]  __driver_probe_device\u002B0x84/0x170 [ 3788.514189]  driver_probe_device\u002B0x44/0x120 [ 3788.514192]  __device_attach_driver\u002B0xc4/0x168 [ 3788.514195]  bus_for_each_drv\u002B0x8c/0xf0 [ 3788.514197]  __device_attach\u002B0xa4/0x1c0 [ 3788.514200]  device_initial_probe\u002B0x1c/0x30 [ 3788.514203]  bus_probe_device\u002B0xb4/0xc0 [ 3788.514206]  device_add\u002B0x614/0x828 [ 3788.514209]  _vdpa_register_device\u002B0x58/0x88 [ 3788.514211]  octep_vdpa_dev_add\u002B0x104/0x228 [octep_vdpa] [ 3788.514215]  vdpa_nl_cmd_dev_add_set_doit\u002B0x2d0/0x3c0 [ 3788.514218]  genl_family_rcv_msg_doit\u002B0xe4/0x158 [ 3788.514222]  genl_rcv_msg\u002B0x218/0x298 [ 3788.514225]  netlink_rcv_skb\u002B0x64/0x138 [ 3788.514229]  genl_rcv\u002B0x40/0x60 [ 3788.514233]  netlink_unicast\u002B0x32c/0x3b0 [ 3788.514237]  netlink_sendmsg\u002B0x170/0x3b8 [ 3788.514241]  __sys_sendto\u002B0x12c/0x1c0 [ 3788.514246]  __arm64_sys_sendto\u002B0x30/0x48 [ 3788.514249]  invoke_syscall.constprop.0\u002B0x58/0xf8 [ 3788.514255]  do_el0_svc\u002B0x48/0xd0 [ 3788.514259]  el0_svc\u002B0x48/0x210 [ 3788.514264]  el0t_64_sync_handler\u002B0xa0/0xe8 [ 3788.514268]  el0t_64_sync\u002B0x198/0x1a0 [ 3788.514271] ---[ end trace 0000000000000000 ]---  Fix by using virtio_device-\u003Edevice consistently for allocation and deallocation",
  "published": "2026-02-04T16:16:20Z",
  "severity": "",
  "epss": 0.00211,
  "epssPercentile": 0.1146,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.18.8-1",
      "fix": "DEBIAN-CVE-2026-23046",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-23046",
      "released": "2026-02-04T16:16:20Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}