CVE-2026-46304 (GCVE-0-2026-46304)

Vulnerability from cvelistv5 – Published: 2026-06-08 15:46 – Updated: 2026-08-05 12:31
VLAI
Title
nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free
Summary
In the Linux kernel, the following vulnerability has been resolved: nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free nvmet_tcp_release_queue_work() runs on nvmet-wq and can drop the final controller reference through nvmet_cq_put(). If that triggers nvmet_ctrl_free(), the teardown path flushes ctrl->async_event_work on the same nvmet-wq. Call chain: nvmet_tcp_schedule_release_queue() kref_put(&queue->kref, nvmet_tcp_release_queue) nvmet_tcp_release_queue() queue_work(nvmet_wq, &queue->release_work) <--- nvmet_wq process_one_work() nvmet_tcp_release_queue_work() nvmet_cq_put(&queue->nvme_cq) nvmet_cq_destroy() nvmet_ctrl_put(cq->ctrl) nvmet_ctrl_free() flush_work(&ctrl->async_event_work) <--- nvmet_wq Previously Scheduled by :- nvmet_add_async_event queue_work(nvmet_wq, &ctrl->async_event_work); This trips lockdep with a possible recursive locking warning. [ 5223.015876] run blktests nvme/003 at 2026-04-07 20:53:55 [ 5223.061801] loop0: detected capacity change from 0 to 2097152 [ 5223.072206] nvmet: adding nsid 1 to subsystem blktests-subsystem-1 [ 5223.088368] nvmet_tcp: enabling port 0 (127.0.0.1:4420) [ 5223.126086] nvmet: Created discovery controller 1 for subsystem nqn.2014-08.org.nvmexpress.discovery for NQN nqn.2014-08.org.nvmexpress:uuid:0f01fb42-9f7f-4856-b0b3-51e60b8de349. [ 5223.128453] nvme nvme1: new ctrl: NQN "nqn.2014-08.org.nvmexpress.discovery", addr 127.0.0.1:4420, hostnqn: nqn.2014-08.org.nvmexpress:uuid:0f01fb42-9f7f-4856-b0b3-51e60b8de349 [ 5233.199447] nvme nvme1: Removing ctrl: NQN "nqn.2014-08.org.nvmexpress.discovery" [ 5233.227718] ============================================ [ 5233.231283] WARNING: possible recursive locking detected [ 5233.234696] 7.0.0-rc3nvme+ #20 Tainted: G O N [ 5233.238434] -------------------------------------------- [ 5233.241852] kworker/u192:6/2413 is trying to acquire lock: [ 5233.245429] ffff888111632548 ((wq_completion)nvmet-wq){+.+.}-{0:0}, at: touch_wq_lockdep_map+0x26/0x90 [ 5233.251438] but task is already holding lock: [ 5233.255254] ffff888111632548 ((wq_completion)nvmet-wq){+.+.}-{0:0}, at: process_one_work+0x5cc/0x6e0 [ 5233.261125] other info that might help us debug this: [ 5233.265333] Possible unsafe locking scenario: [ 5233.269217] CPU0 [ 5233.270795] ---- [ 5233.272436] lock((wq_completion)nvmet-wq); [ 5233.275241] lock((wq_completion)nvmet-wq); [ 5233.278020] *** DEADLOCK *** [ 5233.281793] May be due to missing lock nesting notation [ 5233.286195] 3 locks held by kworker/u192:6/2413: [ 5233.289192] #0: ffff888111632548 ((wq_completion)nvmet-wq){+.+.}-{0:0}, at: process_one_work+0x5cc/0x6e0 [ 5233.294569] #1: ffffc9000e2a7e40 ((work_completion)(&queue->release_work)){+.+.}-{0:0}, at: process_one_work+0x1c5/0x6e0 [ 5233.300128] #2: ffffffff82d7dc40 (rcu_read_lock){....}-{1:3}, at: __flush_work+0x62/0x530 [ 5233.304290] stack backtrace: [ 5233.306520] CPU: 4 UID: 0 PID: 2413 Comm: kworker/u192:6 Tainted: G O N 7.0.0-rc3nvme+ #20 PREEMPT(full) [ 5233.306524] Tainted: [O]=OOT_MODULE, [N]=TEST [ 5233.306525] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.17.0-0-gb52ca86e094d-prebuilt.qemu.org 04/01/2014 [ 5233.306527] Workqueue: nvmet-wq nvmet_tcp_release_queue_work [nvmet_tcp] [ 5233.306532] Call Trace: [ 5233.306534] <TASK> [ 5233.306536] dump_stack_lvl+0x73/0xb0 [ 5233.306552] print_deadlock_bug+0x225/0x2f0 [ 5233.306556] __lock_acquire+0x13f0/0x2290 [ 5233.306563] lock_acquire+0xd0/0x300 [ 5233.306565] ? touch_wq_lockdep_map+0x26/0x90 [ 5233.306571] ? __flush_work+0x20b/0x530 [ 5233.306573] ? touch_wq_lockdep_map+0x26/0x90 [ 5233.306577] touch_wq_lockdep_map+0x3b/0x90 [ 5233.306580] ? touch_wq_lockdep_map+0x26/0x90 [ 52 ---truncated---
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5 , < ae5b0cad163833e10b271e9becc05d81dae56e5f (git)
Affected: 06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5 , < 8d66ba89480ff098a58d79003a505f383aa4e920 (git)
Affected: 06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5 , < a696fbbd5240b4ac9b166f7bd4c550882ff543f1 (git)
Affected: 06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5 , < 9a4d7222c0955b221e38bb66d10e6bccb672c8a1 (git)
Affected: 06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5 , < ee6e20c4bc9eae542a0954a368449532383169d4 (git)
Affected: 06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5 , < 781f47d641432c26c19625b2cdd7f40825097592 (git)
Affected: 06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5 , < 551f445a56a11a6457550cddcf39c9ebb8bcacc6 (git)
Affected: 06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5 , < aade8abd8b868b6ffa9697aadaea28ec7f65bee6 (git)
Affected: 3976dd677e891c0b2c63d08028d445663539472c (git)
Affected: 4.9.68 , < 4.10 (semver)
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Linux Linux Affected: 4.10
Unaffected: 0 , < 4.10 (semver)
Unaffected: 5.10.258 , ≤ 5.10.* (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.140 , ≤ 6.6.* (semver)
Unaffected: 6.12.88 , ≤ 6.12.* (semver)
Unaffected: 6.18.30 , ≤ 6.18.* (semver)
Unaffected: 7.0.7 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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              "status": "unaffected",
              "version": "5.15.209",
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              "status": "unaffected",
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      "cpeApplicability": [
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free\n\nnvmet_tcp_release_queue_work() runs on nvmet-wq and can drop the\nfinal controller reference through nvmet_cq_put(). If that triggers\nnvmet_ctrl_free(), the teardown path flushes ctrl-\u003easync_event_work on\nthe same nvmet-wq.\n\nCall chain:\n\n nvmet_tcp_schedule_release_queue()\n   kref_put(\u0026queue-\u003ekref, nvmet_tcp_release_queue)\n     nvmet_tcp_release_queue()\n       queue_work(nvmet_wq, \u0026queue-\u003erelease_work) \u003c--- nvmet_wq\n         process_one_work()\n           nvmet_tcp_release_queue_work()\n             nvmet_cq_put(\u0026queue-\u003envme_cq)\n               nvmet_cq_destroy()\n                 nvmet_ctrl_put(cq-\u003ectrl)\n                   nvmet_ctrl_free()\n                     flush_work(\u0026ctrl-\u003easync_event_work) \u003c--- nvmet_wq\n\n                      Previously Scheduled by :-\n\t\t        nvmet_add_async_event\n\t\t          queue_work(nvmet_wq, \u0026ctrl-\u003easync_event_work);\n\nThis trips lockdep with a possible recursive locking warning.\n\n[ 5223.015876] run blktests nvme/003 at 2026-04-07 20:53:55\n[ 5223.061801] loop0: detected capacity change from 0 to 2097152\n[ 5223.072206] nvmet: adding nsid 1 to subsystem blktests-subsystem-1\n[ 5223.088368] nvmet_tcp: enabling port 0 (127.0.0.1:4420)\n[ 5223.126086] nvmet: Created discovery controller 1 for subsystem nqn.2014-08.org.nvmexpress.discovery for NQN nqn.2014-08.org.nvmexpress:uuid:0f01fb42-9f7f-4856-b0b3-51e60b8de349.\n[ 5223.128453] nvme nvme1: new ctrl: NQN \"nqn.2014-08.org.nvmexpress.discovery\", addr 127.0.0.1:4420, hostnqn: nqn.2014-08.org.nvmexpress:uuid:0f01fb42-9f7f-4856-b0b3-51e60b8de349\n[ 5233.199447] nvme nvme1: Removing ctrl: NQN \"nqn.2014-08.org.nvmexpress.discovery\"\n\n[ 5233.227718] ============================================\n[ 5233.231283] WARNING: possible recursive locking detected\n[ 5233.234696] 7.0.0-rc3nvme+ #20 Tainted: G           O     N\n[ 5233.238434] --------------------------------------------\n[ 5233.241852] kworker/u192:6/2413 is trying to acquire lock:\n[ 5233.245429] ffff888111632548 ((wq_completion)nvmet-wq){+.+.}-{0:0}, at: touch_wq_lockdep_map+0x26/0x90\n[ 5233.251438]\n               but task is already holding lock:\n[ 5233.255254] ffff888111632548 ((wq_completion)nvmet-wq){+.+.}-{0:0}, at: process_one_work+0x5cc/0x6e0\n[ 5233.261125]\n               other info that might help us debug this:\n[ 5233.265333]  Possible unsafe locking scenario:\n\n[ 5233.269217]        CPU0\n[ 5233.270795]        ----\n[ 5233.272436]   lock((wq_completion)nvmet-wq);\n[ 5233.275241]   lock((wq_completion)nvmet-wq);\n[ 5233.278020]\n                *** DEADLOCK ***\n\n[ 5233.281793]  May be due to missing lock nesting notation\n\n[ 5233.286195] 3 locks held by kworker/u192:6/2413:\n[ 5233.289192]  #0: ffff888111632548 ((wq_completion)nvmet-wq){+.+.}-{0:0}, at: process_one_work+0x5cc/0x6e0\n[ 5233.294569]  #1: ffffc9000e2a7e40 ((work_completion)(\u0026queue-\u003erelease_work)){+.+.}-{0:0}, at: process_one_work+0x1c5/0x6e0\n[ 5233.300128]  #2: ffffffff82d7dc40 (rcu_read_lock){....}-{1:3}, at: __flush_work+0x62/0x530\n[ 5233.304290]\n               stack backtrace:\n[ 5233.306520] CPU: 4 UID: 0 PID: 2413 Comm: kworker/u192:6 Tainted: G           O     N  7.0.0-rc3nvme+ #20 PREEMPT(full)\n[ 5233.306524] Tainted: [O]=OOT_MODULE, [N]=TEST\n[ 5233.306525] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.17.0-0-gb52ca86e094d-prebuilt.qemu.org 04/01/2014\n[ 5233.306527] Workqueue: nvmet-wq nvmet_tcp_release_queue_work [nvmet_tcp]\n[ 5233.306532] Call Trace:\n[ 5233.306534]  \u003cTASK\u003e\n[ 5233.306536]  dump_stack_lvl+0x73/0xb0\n[ 5233.306552]  print_deadlock_bug+0x225/0x2f0\n[ 5233.306556]  __lock_acquire+0x13f0/0x2290\n[ 5233.306563]  lock_acquire+0xd0/0x300\n[ 5233.306565]  ? touch_wq_lockdep_map+0x26/0x90\n[ 5233.306571]  ? __flush_work+0x20b/0x530\n[ 5233.306573]  ? touch_wq_lockdep_map+0x26/0x90\n[ 5233.306577]  touch_wq_lockdep_map+0x3b/0x90\n[ 5233.306580]  ? touch_wq_lockdep_map+0x26/0x90\n[ 52\n---truncated---"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The bug is reached through the NVMe-oF TCP target (nvmet-tcp) disconnect/teardown path; remote peers connect over TCP and closing that connection drives `nvmet_tcp_release_queue_work()` on `nvmet-wq`, which can call the vulnerable `flush_work()` in `nvmet_ctrl_free()`.\nAC:L - An attacker fully controls both sides of the race by connecting, issuing an Async Event Request (which queues `async_event_work` on `nvmet-wq`), and then disconnecting to force controller teardown on the same workqueue.\nPR:N - Exploitation requires only network reachability to an exposed nvmet-tcp port; the discovery subsystem accepts any host NQN without Linux credentials, and no CAP_SYS_ADMIN or other local privileges are needed on the target.\nUI:N - The deadlock is triggered entirely through automated NVMe-oF protocol interaction (connect, admin command, disconnect) with no action required from a local user or administrator.\nS:U - Impact is confined to the kernel NVMe target subsystem (workqueue worker hang and nvmet service disruption); it does not cross a VM, container, or IOMMU security boundary.\nC:N - This is a recursive workqueue flush deadlock, not memory corruption; there is no out-of-bounds access, use-after-free, or information disclosure primitive.\nI:N - The flaw causes a worker to block during teardown but does not modify arbitrary kernel or user data and provides no write or code-execution primitive.\nA:H - Calling `flush_work()` on `nvmet-wq` from `nvmet_tcp_release_queue_work()` running on the same workqueue can permanently hang an nvmet worker (lockdep reports \"DEADLOCK\"), denying NVMe target service and stalling further nvmet workqueue processing."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:31:07.655Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ae5b0cad163833e10b271e9becc05d81dae56e5f"
        },
        {
          "url": "https://git.kernel.org/stable/c/8d66ba89480ff098a58d79003a505f383aa4e920"
        },
        {
          "url": "https://git.kernel.org/stable/c/a696fbbd5240b4ac9b166f7bd4c550882ff543f1"
        },
        {
          "url": "https://git.kernel.org/stable/c/9a4d7222c0955b221e38bb66d10e6bccb672c8a1"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee6e20c4bc9eae542a0954a368449532383169d4"
        },
        {
          "url": "https://git.kernel.org/stable/c/781f47d641432c26c19625b2cdd7f40825097592"
        },
        {
          "url": "https://git.kernel.org/stable/c/551f445a56a11a6457550cddcf39c9ebb8bcacc6"
        },
        {
          "url": "https://git.kernel.org/stable/c/aade8abd8b868b6ffa9697aadaea28ec7f65bee6"
        }
      ],
      "title": "nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46304",
    "datePublished": "2026-06-08T15:46:31.747Z",
    "dateReserved": "2026-05-13T15:03:33.111Z",
    "dateUpdated": "2026-08-05T12:31:07.655Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-46304",
      "date": "2026-08-24",
      "epss": "0.00389",
      "percentile": "0.31675"
    },
    "microsoft_vex": {
      "current_release_date": "2026-06-17T14:45:21.000Z",
      "cve": "CVE-2026-46304",
      "id": "msrc_CVE-2026-46304",
      "initial_release_date": "2026-06-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-46304.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-46304\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-06-08T17:16:49.053\",\"lastModified\":\"2026-07-08T14:48:12.430\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free\\n\\nnvmet_tcp_release_queue_work() runs on nvmet-wq and can drop the\\nfinal controller reference through nvmet_cq_put(). If that triggers\\nnvmet_ctrl_free(), the teardown path flushes ctrl-\u003easync_event_work on\\nthe same nvmet-wq.\\n\\nCall chain:\\n\\n nvmet_tcp_schedule_release_queue()\\n   kref_put(\u0026queue-\u003ekref, nvmet_tcp_release_queue)\\n     nvmet_tcp_release_queue()\\n       queue_work(nvmet_wq, \u0026queue-\u003erelease_work) \u003c--- nvmet_wq\\n         process_one_work()\\n           nvmet_tcp_release_queue_work()\\n             nvmet_cq_put(\u0026queue-\u003envme_cq)\\n               nvmet_cq_destroy()\\n                 nvmet_ctrl_put(cq-\u003ectrl)\\n                   nvmet_ctrl_free()\\n                     flush_work(\u0026ctrl-\u003easync_event_work) \u003c--- nvmet_wq\\n\\n                      Previously Scheduled by :-\\n\\t\\t        nvmet_add_async_event\\n\\t\\t          queue_work(nvmet_wq, \u0026ctrl-\u003easync_event_work);\\n\\nThis trips lockdep with a possible recursive locking warning.\\n\\n[ 5223.015876] run blktests nvme/003 at 2026-04-07 20:53:55\\n[ 5223.061801] loop0: detected capacity change from 0 to 2097152\\n[ 5223.072206] nvmet: adding nsid 1 to subsystem blktests-subsystem-1\\n[ 5223.088368] nvmet_tcp: enabling port 0 (127.0.0.1:4420)\\n[ 5223.126086] nvmet: Created discovery controller 1 for subsystem nqn.2014-08.org.nvmexpress.discovery for NQN nqn.2014-08.org.nvmexpress:uuid:0f01fb42-9f7f-4856-b0b3-51e60b8de349.\\n[ 5223.128453] nvme nvme1: new ctrl: NQN \\\"nqn.2014-08.org.nvmexpress.discovery\\\", addr 127.0.0.1:4420, hostnqn: nqn.2014-08.org.nvmexpress:uuid:0f01fb42-9f7f-4856-b0b3-51e60b8de349\\n[ 5233.199447] nvme nvme1: Removing ctrl: NQN \\\"nqn.2014-08.org.nvmexpress.discovery\\\"\\n\\n[ 5233.227718] ============================================\\n[ 5233.231283] WARNING: possible recursive locking detected\\n[ 5233.234696] 7.0.0-rc3nvme+ #20 Tainted: G           O     N\\n[ 5233.238434] --------------------------------------------\\n[ 5233.241852] kworker/u192:6/2413 is trying to acquire lock:\\n[ 5233.245429] ffff888111632548 ((wq_completion)nvmet-wq){+.+.}-{0:0}, at: touch_wq_lockdep_map+0x26/0x90\\n[ 5233.251438]\\n               but task is already holding lock:\\n[ 5233.255254] ffff888111632548 ((wq_completion)nvmet-wq){+.+.}-{0:0}, at: process_one_work+0x5cc/0x6e0\\n[ 5233.261125]\\n               other info that might help us debug this:\\n[ 5233.265333]  Possible unsafe locking scenario:\\n\\n[ 5233.269217]        CPU0\\n[ 5233.270795]        ----\\n[ 5233.272436]   lock((wq_completion)nvmet-wq);\\n[ 5233.275241]   lock((wq_completion)nvmet-wq);\\n[ 5233.278020]\\n                *** DEADLOCK ***\\n\\n[ 5233.281793]  May be due to missing lock nesting notation\\n\\n[ 5233.286195] 3 locks held by kworker/u192:6/2413:\\n[ 5233.289192]  #0: ffff888111632548 ((wq_completion)nvmet-wq){+.+.}-{0:0}, at: process_one_work+0x5cc/0x6e0\\n[ 5233.294569]  #1: ffffc9000e2a7e40 ((work_completion)(\u0026queue-\u003erelease_work)){+.+.}-{0:0}, at: process_one_work+0x1c5/0x6e0\\n[ 5233.300128]  #2: ffffffff82d7dc40 (rcu_read_lock){....}-{1:3}, at: __flush_work+0x62/0x530\\n[ 5233.304290]\\n               stack backtrace:\\n[ 5233.306520] CPU: 4 UID: 0 PID: 2413 Comm: kworker/u192:6 Tainted: G           O     N  7.0.0-rc3nvme+ #20 PREEMPT(full)\\n[ 5233.306524] Tainted: [O]=OOT_MODULE, [N]=TEST\\n[ 5233.306525] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.17.0-0-gb52ca86e094d-prebuilt.qemu.org 04/01/2014\\n[ 5233.306527] Workqueue: nvmet-wq nvmet_tcp_release_queue_work [nvmet_tcp]\\n[ 5233.306532] Call Trace:\\n[ 5233.306534]  \u003cTASK\u003e\\n[ 5233.306536]  dump_stack_lvl+0x73/0xb0\\n[ 5233.306552]  print_deadlock_bug+0x225/0x2f0\\n[ 5233.306556]  __lock_acquire+0x13f0/0x2290\\n[ 5233.306563]  lock_acquire+0xd0/0x300\\n[ 5233.306565]  ? touch_wq_lockdep_map+0x26/0x90\\n[ 5233.306571]  ? __flush_work+0x20b/0x530\\n[ 5233.306573]  ? touch_wq_lockdep_map+0x26/0x90\\n[ 5233.306577]  touch_wq_lockdep_map+0x3b/0x90\\n[ 5233.306580]  ? touch_wq_lockdep_map+0x26/0x90\\n[ 52\\n---truncated---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/nvme/target/core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5\",\"lessThan\":\"ae5b0cad163833e10b271e9becc05d81dae56e5f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5\",\"lessThan\":\"8d66ba89480ff098a58d79003a505f383aa4e920\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5\",\"lessThan\":\"a696fbbd5240b4ac9b166f7bd4c550882ff543f1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5\",\"lessThan\":\"9a4d7222c0955b221e38bb66d10e6bccb672c8a1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5\",\"lessThan\":\"ee6e20c4bc9eae542a0954a368449532383169d4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5\",\"lessThan\":\"781f47d641432c26c19625b2cdd7f40825097592\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5\",\"lessThan\":\"551f445a56a11a6457550cddcf39c9ebb8bcacc6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5\",\"lessThan\":\"aade8abd8b868b6ffa9697aadaea28ec7f65bee6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3976dd677e891c0b2c63d08028d445663539472c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4.9.68\",\"lessThan\":\"4.10\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/nvme/target/core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.10\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.10\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.258\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.209\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.175\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.140\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.88\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.30\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.7\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.9.68\",\"versionEndExcluding\":\"4.10\",\"matchCriteriaId\":\"F852DBF1-7260-4E35-8D25-C8F8EEF895D3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10.1\",\"versionEndExcluding\":\"5.10.258\",\"matchCriteriaId\":\"13B8D12A-AFCB-4D1D-8998-0A1CF5BCAC14\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.209\",\"matchCriteriaId\":\"919C10A9-7951-4A74-BADD-C135A0A8D8B4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.175\",\"matchCriteriaId\":\"92385813-D91D-480D-83A1-F423D2CBB2BA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.140\",\"matchCriteriaId\":\"A1A92866-F406-43B5-B2D1-CFC274753E9D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.88\",\"matchCriteriaId\":\"5AFBE0EC-CCDF-4207-AE92-ABF958125CA4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.30\",\"matchCriteriaId\":\"BF39AE08-AE6D-4410-8FBE-76F6BF5BF55B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.19\",\"versionEndExcluding\":\"7.0.7\",\"matchCriteriaId\":\"D0893CA7-9AE6-4DFE-AC75-48967D73AD8E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.10:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"C201E405-86F2-4F96-984A-00A865219C86\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.10:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"09B6110F-7933-484D-AEAF-5D15FF38647E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.10:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"75694C52-0ADF-45EC-80AC-D973535B5CB9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.10:rc8:*:*:*:*:*:*\",\"matchCriteriaId\":\"29F29665-6B16-4D9F-A417-D0743395DF01\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"B1EF7059-E670-45F4-B422-54C40FA86390\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/551f445a56a11a6457550cddcf39c9ebb8bcacc6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/781f47d641432c26c19625b2cdd7f40825097592\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8d66ba89480ff098a58d79003a505f383aa4e920\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9a4d7222c0955b221e38bb66d10e6bccb672c8a1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a696fbbd5240b4ac9b166f7bd4c550882ff543f1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/aade8abd8b868b6ffa9697aadaea28ec7f65bee6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ae5b0cad163833e10b271e9becc05d81dae56e5f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ee6e20c4bc9eae542a0954a368449532383169d4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-05T14:46:05+00:00",
      "cve": "CVE-2026-46304",
      "id": "CVE-2026-46304",
      "initial_release_date": "2026-06-08T00:00:00+00:00",
      "product_status:known_affected": "260",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46304.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-06T01:17:04Z",
      "cve": "CVE-2026-46304",
      "id": "CVE-2026-46304",
      "initial_release_date": "2026-06-09T02:20:43Z",
      "product_status:known_affected": "291",
      "product_status:known_not_affected": "4",
      "product_status:recommended": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-46304",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-46304.json",
      "version": "5"
    }
  }
}



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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.
  • 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.