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CVE-2026-43448 (GCVE-0-2026-43448)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:22 – Updated: 2026-05-11 22:24
VLAI
Title
nvme-pci: Fix race bug in nvme_poll_irqdisable()
Summary
In the Linux kernel, the following vulnerability has been resolved: nvme-pci: Fix race bug in nvme_poll_irqdisable() In the following scenario, pdev can be disabled between (1) and (3) by (2). This sets pdev->msix_enabled = 0. Then, pci_irq_vector() will return MSI-X IRQ(>15) for (1) whereas return INTx IRQ(<=15) for (2). This causes IRQ warning because it tries to enable INTx IRQ that has never been disabled before. To fix this, save IRQ number into a local variable and ensure disable_irq() and enable_irq() operate on the same IRQ number. Even if pci_free_irq_vectors() frees the IRQ concurrently, disable_irq() and enable_irq() on a stale IRQ number is still valid and safe, and the depth accounting reamins balanced. task 1: nvme_poll_irqdisable() disable_irq(pci_irq_vector(pdev, nvmeq->cq_vector)) ...(1) enable_irq(pci_irq_vector(pdev, nvmeq->cq_vector)) ...(3) task 2: nvme_reset_work() nvme_dev_disable() pdev->msix_enable = 0; ...(2) crash log: ------------[ cut here ]------------ Unbalanced enable for IRQ 10 WARNING: kernel/irq/manage.c:753 at __enable_irq+0x102/0x190 kernel/irq/manage.c:753, CPU#1: kworker/1:0H/26 Modules linked in: CPU: 1 UID: 0 PID: 26 Comm: kworker/1:0H Not tainted 6.19.0-dirty #9 PREEMPT(voluntary) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 Workqueue: kblockd blk_mq_timeout_work RIP: 0010:__enable_irq+0x107/0x190 kernel/irq/manage.c:753 Code: ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8d 3d 2e 7a 3f 05 41 8b 74 24 2c <67> 48 0f b9 3a e8 ef b9 21 00 5b 41 5c 5d e9 46 54 66 03 e8 e1 b9 RSP: 0018:ffffc900001bf550 EFLAGS: 00010046 RAX: 0000000000000007 RBX: 0000000000000000 RCX: ffffffffb20c0e90 RDX: 0000000000000000 RSI: 000000000000000a RDI: ffffffffb74b88f0 RBP: ffffc900001bf560 R08: ffff88800197cf00 R09: 0000000000000001 R10: 0000000000000003 R11: 0000000000000003 R12: ffff8880012a6000 R13: 1ffff92000037eae R14: 000000000000000a R15: 0000000000000293 FS: 0000000000000000(0000) GS:ffff8880b49f7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555da4a25fa8 CR3: 00000000208e8000 CR4: 00000000000006f0 Call Trace: <TASK> enable_irq+0x121/0x1e0 kernel/irq/manage.c:797 nvme_poll_irqdisable+0x162/0x1c0 drivers/nvme/host/pci.c:1494 nvme_timeout+0x965/0x14b0 drivers/nvme/host/pci.c:1744 blk_mq_rq_timed_out block/blk-mq.c:1653 [inline] blk_mq_handle_expired+0x227/0x2d0 block/blk-mq.c:1721 bt_iter+0x2fc/0x3a0 block/blk-mq-tag.c:292 __sbitmap_for_each_set include/linux/sbitmap.h:269 [inline] sbitmap_for_each_set include/linux/sbitmap.h:290 [inline] bt_for_each block/blk-mq-tag.c:324 [inline] blk_mq_queue_tag_busy_iter+0x969/0x1e80 block/blk-mq-tag.c:536 blk_mq_timeout_work+0x627/0x870 block/blk-mq.c:1763 process_one_work+0x956/0x1aa0 kernel/workqueue.c:3257 process_scheduled_works kernel/workqueue.c:3340 [inline] worker_thread+0x65c/0xe60 kernel/workqueue.c:3421 kthread+0x41a/0x930 kernel/kthread.c:463 ret_from_fork+0x6f8/0x8c0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 </TASK> irq event stamp: 74478 hardirqs last enabled at (74477): [<ffffffffb5720a9c>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (74477): [<ffffffffb5720a9c>] _raw_spin_unlock_irq+0x2c/0x60 kernel/locking/spinlock.c:202 hardirqs last disabled at (74478): [<ffffffffb57207b5>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (74478): [<ffffffffb57207b5>] _raw_spin_lock_irqsave+0x85/0xa0 kernel/locking/spinlock.c:162 softirqs last enabled at (74304): [<ffffffffb1e9466c>] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (74304): [<ffffffffb1e9466c>] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (74304): [<ffffffffb1e9466c>] __irq_exit_rcu+0xdc/0x120 ---truncated---
Severity
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: fa059b856a593a7bddd4d3779ae8ab1380e05d91 , < 265dbc9bc33c29f60f90be3e0afe1c4067ebb70b (git)
Affected: fa059b856a593a7bddd4d3779ae8ab1380e05d91 , < 628773eba024d1107cc9ec157a682cbb42ac912a (git)
Affected: fa059b856a593a7bddd4d3779ae8ab1380e05d91 , < 843e913cef4e33723663a899727f685a95ab53fe (git)
Affected: fa059b856a593a7bddd4d3779ae8ab1380e05d91 , < b56c49897bdac5cb49e3495ef421c391628ee9bb (git)
Affected: fa059b856a593a7bddd4d3779ae8ab1380e05d91 , < e311d84c62eb76e025e11a44155b402e55950b83 (git)
Affected: fa059b856a593a7bddd4d3779ae8ab1380e05d91 , < fc71f409b22ca831a9f87a2712eaa09ef2bb4a5e (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.78 , ≤ 6.12.* (semver)
Unaffected: 6.18.19 , ≤ 6.18.* (semver)
Unaffected: 6.19.9 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/host/pci.c"
          ],
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              "status": "unaffected",
              "version": "6.18.19",
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              "version": "6.19.9",
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            {
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              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                  "vulnerable": true
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                {
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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\nnvme-pci: Fix race bug in nvme_poll_irqdisable()\n\nIn the following scenario, pdev can be disabled between (1) and (3) by\n(2). This sets pdev-\u003emsix_enabled = 0. Then, pci_irq_vector() will\nreturn MSI-X IRQ(\u003e15) for (1) whereas return INTx IRQ(\u003c=15) for (2).\nThis causes IRQ warning because it tries to enable INTx IRQ that has\nnever been disabled before.\n\nTo fix this, save IRQ number into a local variable and ensure\ndisable_irq() and enable_irq() operate on the same IRQ number.  Even if\npci_free_irq_vectors() frees the IRQ concurrently, disable_irq() and\nenable_irq() on a stale IRQ number is still valid and safe, and the\ndepth accounting reamins balanced.\n\ntask 1:\nnvme_poll_irqdisable()\n  disable_irq(pci_irq_vector(pdev, nvmeq-\u003ecq_vector)) ...(1)\n  enable_irq(pci_irq_vector(pdev, nvmeq-\u003ecq_vector))  ...(3)\n\ntask 2:\nnvme_reset_work()\n  nvme_dev_disable()\n    pdev-\u003emsix_enable = 0;  ...(2)\n\ncrash log:\n\n------------[ cut here ]------------\nUnbalanced enable for IRQ 10\nWARNING: kernel/irq/manage.c:753 at __enable_irq+0x102/0x190 kernel/irq/manage.c:753, CPU#1: kworker/1:0H/26\nModules linked in:\nCPU: 1 UID: 0 PID: 26 Comm: kworker/1:0H Not tainted 6.19.0-dirty #9 PREEMPT(voluntary)\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014\nWorkqueue: kblockd blk_mq_timeout_work\nRIP: 0010:__enable_irq+0x107/0x190 kernel/irq/manage.c:753\nCode: ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8d 3d 2e 7a 3f 05 41 8b 74 24 2c \u003c67\u003e 48 0f b9 3a e8 ef b9 21 00 5b 41 5c 5d e9 46 54 66 03 e8 e1 b9\nRSP: 0018:ffffc900001bf550 EFLAGS: 00010046\nRAX: 0000000000000007 RBX: 0000000000000000 RCX: ffffffffb20c0e90\nRDX: 0000000000000000 RSI: 000000000000000a RDI: ffffffffb74b88f0\nRBP: ffffc900001bf560 R08: ffff88800197cf00 R09: 0000000000000001\nR10: 0000000000000003 R11: 0000000000000003 R12: ffff8880012a6000\nR13: 1ffff92000037eae R14: 000000000000000a R15: 0000000000000293\nFS:  0000000000000000(0000) GS:ffff8880b49f7000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000555da4a25fa8 CR3: 00000000208e8000 CR4: 00000000000006f0\nCall Trace:\n \u003cTASK\u003e\n enable_irq+0x121/0x1e0 kernel/irq/manage.c:797\n nvme_poll_irqdisable+0x162/0x1c0 drivers/nvme/host/pci.c:1494\n nvme_timeout+0x965/0x14b0 drivers/nvme/host/pci.c:1744\n blk_mq_rq_timed_out block/blk-mq.c:1653 [inline]\n blk_mq_handle_expired+0x227/0x2d0 block/blk-mq.c:1721\n bt_iter+0x2fc/0x3a0 block/blk-mq-tag.c:292\n __sbitmap_for_each_set include/linux/sbitmap.h:269 [inline]\n sbitmap_for_each_set include/linux/sbitmap.h:290 [inline]\n bt_for_each block/blk-mq-tag.c:324 [inline]\n blk_mq_queue_tag_busy_iter+0x969/0x1e80 block/blk-mq-tag.c:536\n blk_mq_timeout_work+0x627/0x870 block/blk-mq.c:1763\n process_one_work+0x956/0x1aa0 kernel/workqueue.c:3257\n process_scheduled_works kernel/workqueue.c:3340 [inline]\n worker_thread+0x65c/0xe60 kernel/workqueue.c:3421\n kthread+0x41a/0x930 kernel/kthread.c:463\n ret_from_fork+0x6f8/0x8c0 arch/x86/kernel/process.c:158\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246\n \u003c/TASK\u003e\nirq event stamp: 74478\nhardirqs last  enabled at (74477): [\u003cffffffffb5720a9c\u003e] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline]\nhardirqs last  enabled at (74477): [\u003cffffffffb5720a9c\u003e] _raw_spin_unlock_irq+0x2c/0x60 kernel/locking/spinlock.c:202\nhardirqs last disabled at (74478): [\u003cffffffffb57207b5\u003e] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]\nhardirqs last disabled at (74478): [\u003cffffffffb57207b5\u003e] _raw_spin_lock_irqsave+0x85/0xa0 kernel/locking/spinlock.c:162\nsoftirqs last  enabled at (74304): [\u003cffffffffb1e9466c\u003e] __do_softirq kernel/softirq.c:656 [inline]\nsoftirqs last  enabled at (74304): [\u003cffffffffb1e9466c\u003e] invoke_softirq kernel/softirq.c:496 [inline]\nsoftirqs last  enabled at (74304): [\u003cffffffffb1e9466c\u003e] __irq_exit_rcu+0xdc/0x120\n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:24:47.245Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/265dbc9bc33c29f60f90be3e0afe1c4067ebb70b"
        },
        {
          "url": "https://git.kernel.org/stable/c/628773eba024d1107cc9ec157a682cbb42ac912a"
        },
        {
          "url": "https://git.kernel.org/stable/c/843e913cef4e33723663a899727f685a95ab53fe"
        },
        {
          "url": "https://git.kernel.org/stable/c/b56c49897bdac5cb49e3495ef421c391628ee9bb"
        },
        {
          "url": "https://git.kernel.org/stable/c/e311d84c62eb76e025e11a44155b402e55950b83"
        },
        {
          "url": "https://git.kernel.org/stable/c/fc71f409b22ca831a9f87a2712eaa09ef2bb4a5e"
        }
      ],
      "title": "nvme-pci: Fix race bug in nvme_poll_irqdisable()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43448",
    "datePublished": "2026-05-08T14:22:14.633Z",
    "dateReserved": "2026-05-01T14:12:56.010Z",
    "dateUpdated": "2026-05-11T22:24:47.245Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-43448",
      "date": "2026-09-17",
      "epss": "0.00089",
      "percentile": "0.00496"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-43448\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-05-08T15:16:57.323\",\"lastModified\":\"2026-06-17T10:49:37.147\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnvme-pci: Fix race bug in nvme_poll_irqdisable()\\n\\nIn the following scenario, pdev can be disabled between (1) and (3) by\\n(2). This sets pdev-\u003emsix_enabled = 0. Then, pci_irq_vector() will\\nreturn MSI-X IRQ(\u003e15) for (1) whereas return INTx IRQ(\u003c=15) for (2).\\nThis causes IRQ warning because it tries to enable INTx IRQ that has\\nnever been disabled before.\\n\\nTo fix this, save IRQ number into a local variable and ensure\\ndisable_irq() and enable_irq() operate on the same IRQ number.  Even if\\npci_free_irq_vectors() frees the IRQ concurrently, disable_irq() and\\nenable_irq() on a stale IRQ number is still valid and safe, and the\\ndepth accounting reamins balanced.\\n\\ntask 1:\\nnvme_poll_irqdisable()\\n  disable_irq(pci_irq_vector(pdev, nvmeq-\u003ecq_vector)) ...(1)\\n  enable_irq(pci_irq_vector(pdev, nvmeq-\u003ecq_vector))  ...(3)\\n\\ntask 2:\\nnvme_reset_work()\\n  nvme_dev_disable()\\n    pdev-\u003emsix_enable = 0;  ...(2)\\n\\ncrash log:\\n\\n------------[ cut here ]------------\\nUnbalanced enable for IRQ 10\\nWARNING: kernel/irq/manage.c:753 at __enable_irq+0x102/0x190 kernel/irq/manage.c:753, CPU#1: kworker/1:0H/26\\nModules linked in:\\nCPU: 1 UID: 0 PID: 26 Comm: kworker/1:0H Not tainted 6.19.0-dirty #9 PREEMPT(voluntary)\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014\\nWorkqueue: kblockd blk_mq_timeout_work\\nRIP: 0010:__enable_irq+0x107/0x190 kernel/irq/manage.c:753\\nCode: ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 79 48 8d 3d 2e 7a 3f 05 41 8b 74 24 2c \u003c67\u003e 48 0f b9 3a e8 ef b9 21 00 5b 41 5c 5d e9 46 54 66 03 e8 e1 b9\\nRSP: 0018:ffffc900001bf550 EFLAGS: 00010046\\nRAX: 0000000000000007 RBX: 0000000000000000 RCX: ffffffffb20c0e90\\nRDX: 0000000000000000 RSI: 000000000000000a RDI: ffffffffb74b88f0\\nRBP: ffffc900001bf560 R08: ffff88800197cf00 R09: 0000000000000001\\nR10: 0000000000000003 R11: 0000000000000003 R12: ffff8880012a6000\\nR13: 1ffff92000037eae R14: 000000000000000a R15: 0000000000000293\\nFS:  0000000000000000(0000) GS:ffff8880b49f7000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000555da4a25fa8 CR3: 00000000208e8000 CR4: 00000000000006f0\\nCall Trace:\\n \u003cTASK\u003e\\n enable_irq+0x121/0x1e0 kernel/irq/manage.c:797\\n nvme_poll_irqdisable+0x162/0x1c0 drivers/nvme/host/pci.c:1494\\n nvme_timeout+0x965/0x14b0 drivers/nvme/host/pci.c:1744\\n blk_mq_rq_timed_out block/blk-mq.c:1653 [inline]\\n blk_mq_handle_expired+0x227/0x2d0 block/blk-mq.c:1721\\n bt_iter+0x2fc/0x3a0 block/blk-mq-tag.c:292\\n __sbitmap_for_each_set include/linux/sbitmap.h:269 [inline]\\n sbitmap_for_each_set include/linux/sbitmap.h:290 [inline]\\n bt_for_each block/blk-mq-tag.c:324 [inline]\\n blk_mq_queue_tag_busy_iter+0x969/0x1e80 block/blk-mq-tag.c:536\\n blk_mq_timeout_work+0x627/0x870 block/blk-mq.c:1763\\n process_one_work+0x956/0x1aa0 kernel/workqueue.c:3257\\n process_scheduled_works kernel/workqueue.c:3340 [inline]\\n worker_thread+0x65c/0xe60 kernel/workqueue.c:3421\\n kthread+0x41a/0x930 kernel/kthread.c:463\\n ret_from_fork+0x6f8/0x8c0 arch/x86/kernel/process.c:158\\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246\\n \u003c/TASK\u003e\\nirq event stamp: 74478\\nhardirqs last  enabled at (74477): [\u003cffffffffb5720a9c\u003e] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline]\\nhardirqs last  enabled at (74477): [\u003cffffffffb5720a9c\u003e] _raw_spin_unlock_irq+0x2c/0x60 kernel/locking/spinlock.c:202\\nhardirqs last disabled at (74478): [\u003cffffffffb57207b5\u003e] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]\\nhardirqs last disabled at (74478): [\u003cffffffffb57207b5\u003e] _raw_spin_lock_irqsave+0x85/0xa0 kernel/locking/spinlock.c:162\\nsoftirqs last  enabled at (74304): [\u003cffffffffb1e9466c\u003e] __do_softirq kernel/softirq.c:656 [inline]\\nsoftirqs last  enabled at (74304): [\u003cffffffffb1e9466c\u003e] invoke_softirq kernel/softirq.c:496 [inline]\\nsoftirqs last  enabled at (74304): [\u003cffffffffb1e9466c\u003e] __irq_exit_rcu+0xdc/0x120\\n---truncated---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/nvme/host/pci.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"fa059b856a593a7bddd4d3779ae8ab1380e05d91\",\"lessThan\":\"265dbc9bc33c29f60f90be3e0afe1c4067ebb70b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fa059b856a593a7bddd4d3779ae8ab1380e05d91\",\"lessThan\":\"628773eba024d1107cc9ec157a682cbb42ac912a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fa059b856a593a7bddd4d3779ae8ab1380e05d91\",\"lessThan\":\"843e913cef4e33723663a899727f685a95ab53fe\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fa059b856a593a7bddd4d3779ae8ab1380e05d91\",\"lessThan\":\"b56c49897bdac5cb49e3495ef421c391628ee9bb\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fa059b856a593a7bddd4d3779ae8ab1380e05d91\",\"lessThan\":\"e311d84c62eb76e025e11a44155b402e55950b83\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fa059b856a593a7bddd4d3779ae8ab1380e05d91\",\"lessThan\":\"fc71f409b22ca831a9f87a2712eaa09ef2bb4a5e\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/nvme/host/pci.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.7\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.7\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.167\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.130\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.78\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.19\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19.9\",\"lessThanOrEqual\":\"6.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-362\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.7\",\"versionEndExcluding\":\"6.1.167\",\"matchCriteriaId\":\"B5CE982A-7BCF-4A25-8247-C00806377AA4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.130\",\"matchCriteriaId\":\"C57BB918-DF28-46B3-94F7-144176841267\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.78\",\"matchCriteriaId\":\"28D591F5-B196-4CC9-905C-DC80F116E7A8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.19\",\"matchCriteriaId\":\"D394AC60-6F28-435F-872A-CCDF384B8331\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.19\",\"versionEndExcluding\":\"6.19.9\",\"matchCriteriaId\":\"E825E7C3-FEAC-4FD3-8A81-78D7387948C9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"F253B622-8837-4245-BCE5-A7BF8FC76A16\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"F666C8D8-6538-46D4-B318-87610DE64C34\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/265dbc9bc33c29f60f90be3e0afe1c4067ebb70b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/628773eba024d1107cc9ec157a682cbb42ac912a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/843e913cef4e33723663a899727f685a95ab53fe\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b56c49897bdac5cb49e3495ef421c391628ee9bb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e311d84c62eb76e025e11a44155b402e55950b83\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fc71f409b22ca831a9f87a2712eaa09ef2bb4a5e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T07:37:47+00:00",
      "cve": "CVE-2026-43448",
      "id": "CVE-2026-43448",
      "initial_release_date": "2026-05-08T00:00:00+00:00",
      "product_status:known_affected": "232",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: nvme-pci: Fix race bug in nvme_poll_irqdisable()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43448.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-15T02:06:13Z",
      "cve": "CVE-2026-43448",
      "id": "CVE-2026-43448",
      "initial_release_date": "2026-05-12T03:29:59Z",
      "product_status:first_fixed": "65",
      "product_status:known_affected": "258",
      "product_status:known_not_affected": "125",
      "product_status:recommended": "18",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-43448",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-43448.json",
      "version": "4"
    }
  }
}



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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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.