CVE-2025-23163 (GCVE-0-2025-23163)

Vulnerability from cvelistv5 – Published: 2025-05-01 12:55 – Updated: 2026-05-11 21:14
VLAI
Title
net: vlan: don't propagate flags on open
Summary
In the Linux kernel, the following vulnerability has been resolved: net: vlan: don't propagate flags on open With the device instance lock, there is now a possibility of a deadlock: [ 1.211455] ============================================ [ 1.211571] WARNING: possible recursive locking detected [ 1.211687] 6.14.0-rc5-01215-g032756b4ca7a-dirty #5 Not tainted [ 1.211823] -------------------------------------------- [ 1.211936] ip/184 is trying to acquire lock: [ 1.212032] ffff8881024a4c30 (&dev->lock){+.+.}-{4:4}, at: dev_set_allmulti+0x4e/0xb0 [ 1.212207] [ 1.212207] but task is already holding lock: [ 1.212332] ffff8881024a4c30 (&dev->lock){+.+.}-{4:4}, at: dev_open+0x50/0xb0 [ 1.212487] [ 1.212487] other info that might help us debug this: [ 1.212626] Possible unsafe locking scenario: [ 1.212626] [ 1.212751] CPU0 [ 1.212815] ---- [ 1.212871] lock(&dev->lock); [ 1.212944] lock(&dev->lock); [ 1.213016] [ 1.213016] *** DEADLOCK *** [ 1.213016] [ 1.213143] May be due to missing lock nesting notation [ 1.213143] [ 1.213294] 3 locks held by ip/184: [ 1.213371] #0: ffffffff838b53e0 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock+0x1b/0xa0 [ 1.213543] #1: ffffffff84e5fc70 (&net->rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock+0x37/0xa0 [ 1.213727] #2: ffff8881024a4c30 (&dev->lock){+.+.}-{4:4}, at: dev_open+0x50/0xb0 [ 1.213895] [ 1.213895] stack backtrace: [ 1.213991] CPU: 0 UID: 0 PID: 184 Comm: ip Not tainted 6.14.0-rc5-01215-g032756b4ca7a-dirty #5 [ 1.213993] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014 [ 1.213994] Call Trace: [ 1.213995] <TASK> [ 1.213996] dump_stack_lvl+0x8e/0xd0 [ 1.214000] print_deadlock_bug+0x28b/0x2a0 [ 1.214020] lock_acquire+0xea/0x2a0 [ 1.214027] __mutex_lock+0xbf/0xd40 [ 1.214038] dev_set_allmulti+0x4e/0xb0 # real_dev->flags & IFF_ALLMULTI [ 1.214040] vlan_dev_open+0xa5/0x170 # ndo_open on vlandev [ 1.214042] __dev_open+0x145/0x270 [ 1.214046] __dev_change_flags+0xb0/0x1e0 [ 1.214051] netif_change_flags+0x22/0x60 # IFF_UP vlandev [ 1.214053] dev_change_flags+0x61/0xb0 # for each device in group from dev->vlan_info [ 1.214055] vlan_device_event+0x766/0x7c0 # on netdevsim0 [ 1.214058] notifier_call_chain+0x78/0x120 [ 1.214062] netif_open+0x6d/0x90 [ 1.214064] dev_open+0x5b/0xb0 # locks netdevsim0 [ 1.214066] bond_enslave+0x64c/0x1230 [ 1.214075] do_set_master+0x175/0x1e0 # on netdevsim0 [ 1.214077] do_setlink+0x516/0x13b0 [ 1.214094] rtnl_newlink+0xaba/0xb80 [ 1.214132] rtnetlink_rcv_msg+0x440/0x490 [ 1.214144] netlink_rcv_skb+0xeb/0x120 [ 1.214150] netlink_unicast+0x1f9/0x320 [ 1.214153] netlink_sendmsg+0x346/0x3f0 [ 1.214157] __sock_sendmsg+0x86/0xb0 [ 1.214160] ____sys_sendmsg+0x1c8/0x220 [ 1.214164] ___sys_sendmsg+0x28f/0x2d0 [ 1.214179] __x64_sys_sendmsg+0xef/0x140 [ 1.214184] do_syscall_64+0xec/0x1d0 [ 1.214190] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1.214191] RIP: 0033:0x7f2d1b4a7e56 Device setup: netdevsim0 (down) ^ ^ bond netdevsim1.100@netdevsim1 allmulticast=on (down) When we enslave the lower device (netdevsim0) which has a vlan, we propagate vlan's allmuti/promisc flags during ndo_open. This causes (re)locking on of the real_dev. Propagate allmulti/promisc on flags change, not on the open. There is a slight semantics change that vlans that are down now propagate the flags, but this seems unlikely to result in the real issues. Reproducer: echo 0 1 > /sys/bus/netdevsim/new_device dev_path=$(ls -d /sys/bus/netdevsim/devices/netdevsim0/net/*) dev=$(echo $dev_path | rev | cut -d/ -f1 | rev) ip link set dev $dev name netdevsim0 ip link set dev netdevsim0 up ip link add link netdevsim0 name netdevsim0.100 type vlan id 100 ip link set dev netdevsim0.100 allm ---truncated---
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 6c78dcbd47a68a7d25d2bee7a6c74b9136cb5fde , < a32f1d4f1f4c9d978698f3c718621f6198f2e7ac (git)
Affected: 6c78dcbd47a68a7d25d2bee7a6c74b9136cb5fde , < b1e3eeb037256a2f1206a8d69810ec47eb152026 (git)
Affected: 6c78dcbd47a68a7d25d2bee7a6c74b9136cb5fde , < 523fa0979d842443aa14b80002e45b471cbac137 (git)
Affected: 6c78dcbd47a68a7d25d2bee7a6c74b9136cb5fde , < 53fb25e90c0a503a17c639341ba5e755cb2feb5c (git)
Affected: 6c78dcbd47a68a7d25d2bee7a6c74b9136cb5fde , < d537859e56bcc3091805c524484a4c85386b3cc8 (git)
Affected: 6c78dcbd47a68a7d25d2bee7a6c74b9136cb5fde , < 299d7d27af6b5844cda06a0fdfa635705e1bc50f (git)
Affected: 6c78dcbd47a68a7d25d2bee7a6c74b9136cb5fde , < 8980018a9806743d9b80837330d46f06ecf78516 (git)
Affected: 6c78dcbd47a68a7d25d2bee7a6c74b9136cb5fde , < 538b43aa21e3b17c110104efd218b966d2eda5f8 (git)
Affected: 6c78dcbd47a68a7d25d2bee7a6c74b9136cb5fde , < 27b918007d96402aba10ed52a6af8015230f1793 (git)
Create a notification for this product.
Linux Linux Affected: 2.6.23
Unaffected: 0 , < 2.6.23 (semver)
Unaffected: 5.4.293 , ≤ 5.4.* (semver)
Unaffected: 5.10.237 , ≤ 5.10.* (semver)
Unaffected: 5.15.181 , ≤ 5.15.* (semver)
Unaffected: 6.1.135 , ≤ 6.1.* (semver)
Unaffected: 6.6.88 , ≤ 6.6.* (semver)
Unaffected: 6.12.24 , ≤ 6.12.* (semver)
Unaffected: 6.13.12 , ≤ 6.13.* (semver)
Unaffected: 6.14.3 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: vlan: don\u0027t propagate flags on open\n\nWith the device instance lock, there is now a possibility of a deadlock:\n\n[    1.211455] ============================================\n[    1.211571] WARNING: possible recursive locking detected\n[    1.211687] 6.14.0-rc5-01215-g032756b4ca7a-dirty #5 Not tainted\n[    1.211823] --------------------------------------------\n[    1.211936] ip/184 is trying to acquire lock:\n[    1.212032] ffff8881024a4c30 (\u0026dev-\u003elock){+.+.}-{4:4}, at: dev_set_allmulti+0x4e/0xb0\n[    1.212207]\n[    1.212207] but task is already holding lock:\n[    1.212332] ffff8881024a4c30 (\u0026dev-\u003elock){+.+.}-{4:4}, at: dev_open+0x50/0xb0\n[    1.212487]\n[    1.212487] other info that might help us debug this:\n[    1.212626]  Possible unsafe locking scenario:\n[    1.212626]\n[    1.212751]        CPU0\n[    1.212815]        ----\n[    1.212871]   lock(\u0026dev-\u003elock);\n[    1.212944]   lock(\u0026dev-\u003elock);\n[    1.213016]\n[    1.213016]  *** DEADLOCK ***\n[    1.213016]\n[    1.213143]  May be due to missing lock nesting notation\n[    1.213143]\n[    1.213294] 3 locks held by ip/184:\n[    1.213371]  #0: ffffffff838b53e0 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock+0x1b/0xa0\n[    1.213543]  #1: ffffffff84e5fc70 (\u0026net-\u003ertnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock+0x37/0xa0\n[    1.213727]  #2: ffff8881024a4c30 (\u0026dev-\u003elock){+.+.}-{4:4}, at: dev_open+0x50/0xb0\n[    1.213895]\n[    1.213895] stack backtrace:\n[    1.213991] CPU: 0 UID: 0 PID: 184 Comm: ip Not tainted 6.14.0-rc5-01215-g032756b4ca7a-dirty #5\n[    1.213993] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014\n[    1.213994] Call Trace:\n[    1.213995]  \u003cTASK\u003e\n[    1.213996]  dump_stack_lvl+0x8e/0xd0\n[    1.214000]  print_deadlock_bug+0x28b/0x2a0\n[    1.214020]  lock_acquire+0xea/0x2a0\n[    1.214027]  __mutex_lock+0xbf/0xd40\n[    1.214038]  dev_set_allmulti+0x4e/0xb0 # real_dev-\u003eflags \u0026 IFF_ALLMULTI\n[    1.214040]  vlan_dev_open+0xa5/0x170 # ndo_open on vlandev\n[    1.214042]  __dev_open+0x145/0x270\n[    1.214046]  __dev_change_flags+0xb0/0x1e0\n[    1.214051]  netif_change_flags+0x22/0x60 # IFF_UP vlandev\n[    1.214053]  dev_change_flags+0x61/0xb0 # for each device in group from dev-\u003evlan_info\n[    1.214055]  vlan_device_event+0x766/0x7c0 # on netdevsim0\n[    1.214058]  notifier_call_chain+0x78/0x120\n[    1.214062]  netif_open+0x6d/0x90\n[    1.214064]  dev_open+0x5b/0xb0 # locks netdevsim0\n[    1.214066]  bond_enslave+0x64c/0x1230\n[    1.214075]  do_set_master+0x175/0x1e0 # on netdevsim0\n[    1.214077]  do_setlink+0x516/0x13b0\n[    1.214094]  rtnl_newlink+0xaba/0xb80\n[    1.214132]  rtnetlink_rcv_msg+0x440/0x490\n[    1.214144]  netlink_rcv_skb+0xeb/0x120\n[    1.214150]  netlink_unicast+0x1f9/0x320\n[    1.214153]  netlink_sendmsg+0x346/0x3f0\n[    1.214157]  __sock_sendmsg+0x86/0xb0\n[    1.214160]  ____sys_sendmsg+0x1c8/0x220\n[    1.214164]  ___sys_sendmsg+0x28f/0x2d0\n[    1.214179]  __x64_sys_sendmsg+0xef/0x140\n[    1.214184]  do_syscall_64+0xec/0x1d0\n[    1.214190]  entry_SYSCALL_64_after_hwframe+0x77/0x7f\n[    1.214191] RIP: 0033:0x7f2d1b4a7e56\n\nDevice setup:\n\n     netdevsim0 (down)\n     ^        ^\n  bond        netdevsim1.100@netdevsim1 allmulticast=on (down)\n\nWhen we enslave the lower device (netdevsim0) which has a vlan, we\npropagate vlan\u0027s allmuti/promisc flags during ndo_open. This causes\n(re)locking on of the real_dev.\n\nPropagate allmulti/promisc on flags change, not on the open. There\nis a slight semantics change that vlans that are down now propagate\nthe flags, but this seems unlikely to result in the real issues.\n\nReproducer:\n\n  echo 0 1 \u003e /sys/bus/netdevsim/new_device\n\n  dev_path=$(ls -d /sys/bus/netdevsim/devices/netdevsim0/net/*)\n  dev=$(echo $dev_path | rev | cut -d/ -f1 | rev)\n\n  ip link set dev $dev name netdevsim0\n  ip link set dev netdevsim0 up\n\n  ip link add link netdevsim0 name netdevsim0.100 type vlan id 100\n  ip link set dev netdevsim0.100 allm\n---truncated---"
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a32f1d4f1f4c9d978698f3c718621f6198f2e7ac"
        },
        {
          "url": "https://git.kernel.org/stable/c/b1e3eeb037256a2f1206a8d69810ec47eb152026"
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        {
          "url": "https://git.kernel.org/stable/c/523fa0979d842443aa14b80002e45b471cbac137"
        },
        {
          "url": "https://git.kernel.org/stable/c/53fb25e90c0a503a17c639341ba5e755cb2feb5c"
        },
        {
          "url": "https://git.kernel.org/stable/c/d537859e56bcc3091805c524484a4c85386b3cc8"
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        },
        {
          "url": "https://git.kernel.org/stable/c/8980018a9806743d9b80837330d46f06ecf78516"
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        },
        {
          "url": "https://git.kernel.org/stable/c/27b918007d96402aba10ed52a6af8015230f1793"
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      "title": "net: vlan: don\u0027t propagate flags on open",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-23163",
    "datePublished": "2025-05-01T12:55:47.380Z",
    "dateReserved": "2025-01-11T14:28:41.517Z",
    "dateUpdated": "2026-05-11T21:14:11.352Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-23163",
      "date": "2026-06-07",
      "epss": "0.00038",
      "percentile": "0.11787"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-23163\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-01T13:15:52.273\",\"lastModified\":\"2025-11-05T17:50:57.807\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: vlan: don\u0027t propagate flags on open\\n\\nWith the device instance lock, there is now a possibility of a deadlock:\\n\\n[    1.211455] ============================================\\n[    1.211571] WARNING: possible recursive locking detected\\n[    1.211687] 6.14.0-rc5-01215-g032756b4ca7a-dirty #5 Not tainted\\n[    1.211823] --------------------------------------------\\n[    1.211936] ip/184 is trying to acquire lock:\\n[    1.212032] ffff8881024a4c30 (\u0026dev-\u003elock){+.+.}-{4:4}, at: dev_set_allmulti+0x4e/0xb0\\n[    1.212207]\\n[    1.212207] but task is already holding lock:\\n[    1.212332] ffff8881024a4c30 (\u0026dev-\u003elock){+.+.}-{4:4}, at: dev_open+0x50/0xb0\\n[    1.212487]\\n[    1.212487] other info that might help us debug this:\\n[    1.212626]  Possible unsafe locking scenario:\\n[    1.212626]\\n[    1.212751]        CPU0\\n[    1.212815]        ----\\n[    1.212871]   lock(\u0026dev-\u003elock);\\n[    1.212944]   lock(\u0026dev-\u003elock);\\n[    1.213016]\\n[    1.213016]  *** DEADLOCK ***\\n[    1.213016]\\n[    1.213143]  May be due to missing lock nesting notation\\n[    1.213143]\\n[    1.213294] 3 locks held by ip/184:\\n[    1.213371]  #0: ffffffff838b53e0 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock+0x1b/0xa0\\n[    1.213543]  #1: ffffffff84e5fc70 (\u0026net-\u003ertnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock+0x37/0xa0\\n[    1.213727]  #2: ffff8881024a4c30 (\u0026dev-\u003elock){+.+.}-{4:4}, at: dev_open+0x50/0xb0\\n[    1.213895]\\n[    1.213895] stack backtrace:\\n[    1.213991] CPU: 0 UID: 0 PID: 184 Comm: ip Not tainted 6.14.0-rc5-01215-g032756b4ca7a-dirty #5\\n[    1.213993] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014\\n[    1.213994] Call Trace:\\n[    1.213995]  \u003cTASK\u003e\\n[    1.213996]  dump_stack_lvl+0x8e/0xd0\\n[    1.214000]  print_deadlock_bug+0x28b/0x2a0\\n[    1.214020]  lock_acquire+0xea/0x2a0\\n[    1.214027]  __mutex_lock+0xbf/0xd40\\n[    1.214038]  dev_set_allmulti+0x4e/0xb0 # real_dev-\u003eflags \u0026 IFF_ALLMULTI\\n[    1.214040]  vlan_dev_open+0xa5/0x170 # ndo_open on vlandev\\n[    1.214042]  __dev_open+0x145/0x270\\n[    1.214046]  __dev_change_flags+0xb0/0x1e0\\n[    1.214051]  netif_change_flags+0x22/0x60 # IFF_UP vlandev\\n[    1.214053]  dev_change_flags+0x61/0xb0 # for each device in group from dev-\u003evlan_info\\n[    1.214055]  vlan_device_event+0x766/0x7c0 # on netdevsim0\\n[    1.214058]  notifier_call_chain+0x78/0x120\\n[    1.214062]  netif_open+0x6d/0x90\\n[    1.214064]  dev_open+0x5b/0xb0 # locks netdevsim0\\n[    1.214066]  bond_enslave+0x64c/0x1230\\n[    1.214075]  do_set_master+0x175/0x1e0 # on netdevsim0\\n[    1.214077]  do_setlink+0x516/0x13b0\\n[    1.214094]  rtnl_newlink+0xaba/0xb80\\n[    1.214132]  rtnetlink_rcv_msg+0x440/0x490\\n[    1.214144]  netlink_rcv_skb+0xeb/0x120\\n[    1.214150]  netlink_unicast+0x1f9/0x320\\n[    1.214153]  netlink_sendmsg+0x346/0x3f0\\n[    1.214157]  __sock_sendmsg+0x86/0xb0\\n[    1.214160]  ____sys_sendmsg+0x1c8/0x220\\n[    1.214164]  ___sys_sendmsg+0x28f/0x2d0\\n[    1.214179]  __x64_sys_sendmsg+0xef/0x140\\n[    1.214184]  do_syscall_64+0xec/0x1d0\\n[    1.214190]  entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n[    1.214191] RIP: 0033:0x7f2d1b4a7e56\\n\\nDevice setup:\\n\\n     netdevsim0 (down)\\n     ^        ^\\n  bond        netdevsim1.100@netdevsim1 allmulticast=on (down)\\n\\nWhen we enslave the lower device (netdevsim0) which has a vlan, we\\npropagate vlan\u0027s allmuti/promisc flags during ndo_open. This causes\\n(re)locking on of the real_dev.\\n\\nPropagate allmulti/promisc on flags change, not on the open. There\\nis a slight semantics change that vlans that are down now propagate\\nthe flags, but this seems unlikely to result in the real issues.\\n\\nReproducer:\\n\\n  echo 0 1 \u003e /sys/bus/netdevsim/new_device\\n\\n  dev_path=$(ls -d /sys/bus/netdevsim/devices/netdevsim0/net/*)\\n  dev=$(echo $dev_path | rev | cut -d/ -f1 | rev)\\n\\n  ip link set dev $dev name netdevsim0\\n  ip link set dev netdevsim0 up\\n\\n  ip link add link netdevsim0 name netdevsim0.100 type vlan id 100\\n  ip link set dev netdevsim0.100 allm\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: vlan: no propagar indicadores al abrir Con el bloqueo de la instancia del dispositivo, ahora existe la posibilidad de un interbloqueo: [ 1.211455] =============================================== [ 1.211571] ADVERTENCIA: posible bloqueo recursivo detectado [ 1.211687] 6.14.0-rc5-01215-g032756b4ca7a-dirty #5 No contaminado [ 1.211823] -------------------------------------------- [ 1.211936] ip/184 is trying to acquire lock: [ 1.212032] ffff8881024a4c30 (\u0026amp;dev-\u0026gt;lock){+.+.}-{4:4}, at: dev_set_allmulti+0x4e/0xb0 [ 1.212207] [ 1.212207] but task is already holding lock: [ 1.212332] ffff8881024a4c30 (\u0026amp;dev-\u0026gt;lock){+.+.}-{4:4}, at: dev_open+0x50/0xb0 [ 1.212487] [ 1.212487] other info that might help us debug this: [ 1.212626] Possible unsafe locking scenario: [ 1.212626] [ 1.212751] CPU0 [ 1.212815] ---- [ 1.212871] lock(\u0026amp;dev-\u0026gt;lock); [ 1.212944] lock(\u0026amp;dev-\u0026gt;lock); [ 1.213016] [ 1.213016] *** DEADLOCK *** [ 1.213016] [ 1.213143] May be due to missing lock nesting notation [ 1.213143] [ 1.213294] 3 locks held by ip/184: [ 1.213371] #0: ffffffff838b53e0 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock+0x1b/0xa0 [ 1.213543] #1: ffffffff84e5fc70 (\u0026amp;net-\u0026gt;rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock+0x37/0xa0 [ 1.213727] #2: ffff8881024a4c30 (\u0026amp;dev-\u0026gt;lock){+.+.}-{4:4}, at: dev_open+0x50/0xb0 [ 1.213895] [ 1.213895] stack backtrace: [ 1.213991] CPU: 0 UID: 0 PID: 184 Comm: ip Not tainted 6.14.0-rc5-01215-g032756b4ca7a-dirty #5 [ 1.213993] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014 [ 1.213994] Call Trace: [ 1.213995]  [ 1.213996] dump_stack_lvl+0x8e/0xd0 [ 1.214000] print_deadlock_bug+0x28b/0x2a0 [ 1.214020] lock_acquire+0xea/0x2a0 [ 1.214027] __mutex_lock+0xbf/0xd40 [ 1.214038] dev_set_allmulti+0x4e/0xb0 # real_dev-\u0026gt;flags \u0026amp; IFF_ALLMULTI [ 1.214040] vlan_dev_open+0xa5/0x170 # ndo_open on vlandev [ 1.214042] __dev_open+0x145/0x270 [ 1.214046] __dev_change_flags+0xb0/0x1e0 [ 1.214051] netif_change_flags+0x22/0x60 # IFF_UP vlandev [ 1.214053] dev_change_flags+0x61/0xb0 # for each device in group from dev-\u0026gt;vlan_info [ 1.214055] vlan_device_event+0x766/0x7c0 # on netdevsim0 [ 1.214058] notifier_call_chain+0x78/0x120 [ 1.214062] netif_open+0x6d/0x90 [ 1.214064] dev_open+0x5b/0xb0 # locks netdevsim0 [ 1.214066] bond_enslave+0x64c/0x1230 [ 1.214075] do_set_master+0x175/0x1e0 # on netdevsim0 [ 1.214077] do_setlink+0x516/0x13b0 [ 1.214094] rtnl_newlink+0xaba/0xb80 [ 1.214132] rtnetlink_rcv_msg+0x440/0x490 [ 1.214144] netlink_rcv_skb+0xeb/0x120 [ 1.214150] netlink_unicast+0x1f9/0x320 [ 1.214153] netlink_sendmsg+0x346/0x3f0 [ 1.214157] __sock_sendmsg+0x86/0xb0 [ 1.214160] ____sys_sendmsg+0x1c8/0x220 [ 1.214164] ___sys_sendmsg+0x28f/0x2d0 [ 1.214179] __x64_sys_sendmsg+0xef/0x140 [ 1.214184] do_syscall_64+0xec/0x1d0 [ 1.214190] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1.214191] RIP: 0033:0x7f2d1b4a7e56 Device setup: netdevsim0 (down) ^ ^ bond netdevsim1.100@netdevsim1 allmulticast=on (down)  Al esclavizar el dispositivo inferior (netdevsim0) que tiene una VLAN, propagamos los indicadores allmuti/promisc de la VLAN durante ndo_open. Esto provoca el (re)bloqueo de real_dev. Allmulti/promisc se propaga cuando cambian los indicadores, no cuando est\u00e1n abiertos. Hay un ligero cambio sem\u00e1ntico: las VLAN inactivas ahora propagan los indicadores, pero es poco probable que esto cause los problemas reales. Reproductor: echo 0 1 \u0026gt; /sys/bus/netdevsim/new_device dev_path=$(ls -d /sys/bus/netdevsim/devices/netdevsim0/net/*) dev=$(echo $dev_path | rev | cut -d/ -f1 | rev) ip link set dev $dev name netdevsim0 ip link set dev netdevsim0 up ip link add link netdevsim0 name netdevsim0.100 type vlan id 100 ip link set dev netdevsim0.100 allm ---truncado---\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-667\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.4.293\",\"matchCriteriaId\":\"389EB980-4648-446E-A0DC-5FB0265E0F02\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.237\",\"matchCriteriaId\":\"0710B81E-E2FA-4E15-8F68-D297EBB4D50D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.181\",\"matchCriteriaId\":\"12331C9E-F601-4EFC-899E-369F98DCC70B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.135\",\"matchCriteriaId\":\"5B9ACE29-7445-4B6F-B761-6367C005E275\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.88\",\"matchCriteriaId\":\"6E5947E5-45E3-462A-829B-382B3B1C61BD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.24\",\"matchCriteriaId\":\"1D35A8A8-F3EC-45E6-AD37-1F154B27529D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.13.12\",\"matchCriteriaId\":\"4A475784-BF3B-4514-81EE-49C8522FB24A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.14\",\"versionEndExcluding\":\"6.14.3\",\"matchCriteriaId\":\"483E2E15-2135-4EC6-AB64-16282C5EF704\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FA6FEEC2-9F11-4643-8827-749718254FED\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/27b918007d96402aba10ed52a6af8015230f1793\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/299d7d27af6b5844cda06a0fdfa635705e1bc50f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/523fa0979d842443aa14b80002e45b471cbac137\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/538b43aa21e3b17c110104efd218b966d2eda5f8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/53fb25e90c0a503a17c639341ba5e755cb2feb5c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8980018a9806743d9b80837330d46f06ecf78516\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a32f1d4f1f4c9d978698f3c718621f6198f2e7ac\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b1e3eeb037256a2f1206a8d69810ec47eb152026\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d537859e56bcc3091805c524484a4c85386b3cc8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\"]}]}}"
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.