FKIE_CVE-2026-53353

Vulnerability from fkie_nvd - Published: 2026-07-01 14:16 - Updated: 2026-07-01 14:16
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: hsr: Remove WARN_ONCE() in hsr_addr_is_self(). syzbot reported the warning [0] in hsr_addr_is_self(), whose assumption is simply wrong. hsr->self_node is cleared in hsr_del_self_node(), which is called from hsr_dellink(). Since dev->rtnl_link_ops->dellink() is called before unregister_netdevice_many(), there is a window when user can find the device but without hsr->self_node. Let's remove WARN_ONCE() in hsr_addr_is_self(). [0]: HSR: No self node WARNING: net/hsr/hsr_framereg.c:39 at hsr_addr_is_self+0x211/0x3f0 net/hsr/hsr_framereg.c:39, CPU#0: syz.4.16848/17220 Modules linked in: CPU: 0 UID: 0 PID: 17220 Comm: syz.4.16848 Tainted: G L syzkaller #0 PREEMPT_{RT,(full)} Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:hsr_addr_is_self+0x211/0x3f0 net/hsr/hsr_framereg.c:39 Code: 33 2f 41 0f b7 dd 89 ee 09 de 31 ff e8 c8 b4 c6 f6 09 dd 74 54 e8 0f b0 c6 f6 31 ed eb 53 e8 06 b0 c6 f6 48 8d 3d 2f 50 9c 04 <67> 48 0f b9 3a 31 ed eb 42 e8 c1 13 1f 00 89 c5 31 ff 89 c6 e8 96 RSP: 0018:ffffc900041c70e0 EFLAGS: 00010283 RAX: ffffffff8afdc6ca RBX: ffffffff8afdc4e6 RCX: 0000000000080000 RDX: ffffc90010493000 RSI: 0000000000000948 RDI: ffffffff8f9a1700 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: ffffc900041c71e8 R11: fffff52000838e3f R12: dffffc0000000000 R13: ffff888041f9e3c0 R14: ffff888086ee3802 R15: 0000000000000000 FS: 00007f6fe985d6c0(0000) GS:ffff888126176000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f80bd437dac CR3: 0000000025096000 CR4: 00000000003526f0 DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002 DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: <TASK> check_local_dest net/hsr/hsr_forward.c:592 [inline] fill_frame_info net/hsr/hsr_forward.c:728 [inline] hsr_forward_skb+0xa11/0x2a80 net/hsr/hsr_forward.c:739 hsr_dev_xmit+0x253/0x370 net/hsr/hsr_device.c:236 __netdev_start_xmit include/linux/netdevice.h:5368 [inline] netdev_start_xmit include/linux/netdevice.h:5377 [inline] xmit_one net/core/dev.c:3888 [inline] dev_hard_start_xmit+0x2df/0x860 net/core/dev.c:3904 __dev_queue_xmit+0x1428/0x3900 net/core/dev.c:4870 neigh_output include/net/neighbour.h:556 [inline] ip_finish_output2+0xcec/0x10b0 net/ipv4/ip_output.c:237 ip_send_skb net/ipv4/ip_output.c:1510 [inline] ip_push_pending_frames+0x8b/0x110 net/ipv4/ip_output.c:1530 raw_sendmsg+0x1547/0x1a50 net/ipv4/raw.c:659 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x7da/0x9c0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1c3/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6feb62ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6fe985d028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f6feb8a6090 RCX: 00007f6feb62ce59 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000004 RBP: 00007f6feb6c2d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6feb8a6128 R14: 00007f6feb8a6090 R15: 00007ffcf01cc488 </TASK>
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0232b6fcb7615fb7fecfe0727a23065a53e228b8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/271355c2ef6171dbc815e7ae653eed63444bbd58
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/66a46e22396fd5d09606f37f73643eb20e99aa42
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/afd0f17ca46258cec3a5cc48b8df9327fe772490
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d71bb171661ec0225bf4babdd4d296d744982fb3
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/hsr/hsr_framereg.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "271355c2ef6171dbc815e7ae653eed63444bbd58",
              "status": "affected",
              "version": "f266a683a4804dc499efc6c2206ef68efed029d0",
              "versionType": "git"
            },
            {
              "lessThan": "0232b6fcb7615fb7fecfe0727a23065a53e228b8",
              "status": "affected",
              "version": "f266a683a4804dc499efc6c2206ef68efed029d0",
              "versionType": "git"
            },
            {
              "lessThan": "66a46e22396fd5d09606f37f73643eb20e99aa42",
              "status": "affected",
              "version": "f266a683a4804dc499efc6c2206ef68efed029d0",
              "versionType": "git"
            },
            {
              "lessThan": "d71bb171661ec0225bf4babdd4d296d744982fb3",
              "status": "affected",
              "version": "f266a683a4804dc499efc6c2206ef68efed029d0",
              "versionType": "git"
            },
            {
              "lessThan": "afd0f17ca46258cec3a5cc48b8df9327fe772490",
              "status": "affected",
              "version": "f266a683a4804dc499efc6c2206ef68efed029d0",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/hsr/hsr_framereg.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.17"
            },
            {
              "lessThan": "3.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhsr: Remove WARN_ONCE() in hsr_addr_is_self().\n\nsyzbot reported the warning [0] in hsr_addr_is_self(),\nwhose assumption is simply wrong.\n\nhsr-\u003eself_node is cleared in hsr_del_self_node(), which\nis called from hsr_dellink().\n\nSince dev-\u003ertnl_link_ops-\u003edellink() is called before\nunregister_netdevice_many(), there is a window when\nuser can find the device but without hsr-\u003eself_node.\n\nLet\u0027s remove WARN_ONCE() in hsr_addr_is_self().\n\n[0]:\nHSR: No self node\nWARNING: net/hsr/hsr_framereg.c:39 at hsr_addr_is_self+0x211/0x3f0 net/hsr/hsr_framereg.c:39, CPU#0: syz.4.16848/17220\nModules linked in:\nCPU: 0 UID: 0 PID: 17220 Comm: syz.4.16848 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)}\nTainted: [L]=SOFTLOCKUP\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026\nRIP: 0010:hsr_addr_is_self+0x211/0x3f0 net/hsr/hsr_framereg.c:39\nCode: 33 2f 41 0f b7 dd 89 ee 09 de 31 ff e8 c8 b4 c6 f6 09 dd 74 54 e8 0f b0 c6 f6 31 ed eb 53 e8 06 b0 c6 f6 48 8d 3d 2f 50 9c 04 \u003c67\u003e 48 0f b9 3a 31 ed eb 42 e8 c1 13 1f 00 89 c5 31 ff 89 c6 e8 96\nRSP: 0018:ffffc900041c70e0 EFLAGS: 00010283\nRAX: ffffffff8afdc6ca RBX: ffffffff8afdc4e6 RCX: 0000000000080000\nRDX: ffffc90010493000 RSI: 0000000000000948 RDI: ffffffff8f9a1700\nRBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000\nR10: ffffc900041c71e8 R11: fffff52000838e3f R12: dffffc0000000000\nR13: ffff888041f9e3c0 R14: ffff888086ee3802 R15: 0000000000000000\nFS:  00007f6fe985d6c0(0000) GS:ffff888126176000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f80bd437dac CR3: 0000000025096000 CR4: 00000000003526f0\nDR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002\nDR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n check_local_dest net/hsr/hsr_forward.c:592 [inline]\n fill_frame_info net/hsr/hsr_forward.c:728 [inline]\n hsr_forward_skb+0xa11/0x2a80 net/hsr/hsr_forward.c:739\n hsr_dev_xmit+0x253/0x370 net/hsr/hsr_device.c:236\n __netdev_start_xmit include/linux/netdevice.h:5368 [inline]\n netdev_start_xmit include/linux/netdevice.h:5377 [inline]\n xmit_one net/core/dev.c:3888 [inline]\n dev_hard_start_xmit+0x2df/0x860 net/core/dev.c:3904\n __dev_queue_xmit+0x1428/0x3900 net/core/dev.c:4870\n neigh_output include/net/neighbour.h:556 [inline]\n ip_finish_output2+0xcec/0x10b0 net/ipv4/ip_output.c:237\n ip_send_skb net/ipv4/ip_output.c:1510 [inline]\n ip_push_pending_frames+0x8b/0x110 net/ipv4/ip_output.c:1530\n raw_sendmsg+0x1547/0x1a50 net/ipv4/raw.c:659\n sock_sendmsg_nosec net/socket.c:787 [inline]\n __sock_sendmsg net/socket.c:802 [inline]\n ____sys_sendmsg+0x7da/0x9c0 net/socket.c:2698\n ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752\n __sys_sendmsg net/socket.c:2784 [inline]\n __do_sys_sendmsg net/socket.c:2789 [inline]\n __se_sys_sendmsg net/socket.c:2787 [inline]\n __x64_sys_sendmsg+0x1c3/0x2a0 net/socket.c:2787\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f6feb62ce59\nCode: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f6fe985d028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 00007f6feb8a6090 RCX: 00007f6feb62ce59\nRDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000004\nRBP: 00007f6feb6c2d6f R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 00007f6feb8a6128 R14: 00007f6feb8a6090 R15: 00007ffcf01cc488\n \u003c/TASK\u003e"
    }
  ],
  "id": "CVE-2026-53353",
  "lastModified": "2026-07-01T14:16:43.490",
  "metrics": {},
  "published": "2026-07-01T14:16:43.490",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0232b6fcb7615fb7fecfe0727a23065a53e228b8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/271355c2ef6171dbc815e7ae653eed63444bbd58"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/66a46e22396fd5d09606f37f73643eb20e99aa42"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/afd0f17ca46258cec3a5cc48b8df9327fe772490"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d71bb171661ec0225bf4babdd4d296d744982fb3"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}


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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

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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.
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  • 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.


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