CVE-2026-43448

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43448", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:56.010Z", "datePublished": "2026-05-08T14:22:14.633Z", "dateUpdated": "2026-11-06T15:42:54.883Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:24:47.245Z"}, "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->msix_enabled = 0. Then, pci_irq_vector() will\nreturn MSI-X IRQ(>15) for (1) whereas return INTx IRQ(<=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->cq_vector)) ...(1)\n enable_irq(pci_irq_vector(pdev, nvmeq->cq_vector)) ...(3)\n\ntask 2:\nnvme_reset_work()\n nvme_dev_disable()\n pdev->msix_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 <67> 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 <TASK>\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 </TASK>\nirq event stamp: 74478\nhardirqs last enabled at (74477): [<ffffffffb5720a9c>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline]\nhardirqs last enabled at (74477): [<ffffffffb5720a9c>] _raw_spin_unlock_irq+0x2c/0x60 kernel/locking/spinlock.c:202\nhardirqs last disabled at (74478): [<ffffffffb57207b5>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]\nhardirqs last disabled at (74478): [<ffffffffb57207b5>] _raw_spin_lock_irqsave+0x85/0xa0 kernel/locking/spinlock.c:162\nsoftirqs last enabled at (74304): [<ffffffffb1e9466c>] __do_softirq kernel/softirq.c:656 [inline]\nsoftirqs last enabled at (74304): [<ffffffffb1e9466c>] invoke_softirq kernel/softirq.c:496 [inline]\nsoftirqs last enabled at (74304): [<ffffffffb1e9466c>] __irq_exit_rcu+0xdc/0x120\n---truncated---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nvme/host/pci.c"], "versions": [{"version": "fa059b856a593a7bddd4d3779ae8ab1380e05d91", "lessThan": "265dbc9bc33c29f60f90be3e0afe1c4067ebb70b", "status": "affected", "versionType": "git"}, {"version": "fa059b856a593a7bddd4d3779ae8ab1380e05d91", "lessThan": "628773eba024d1107cc9ec157a682cbb42ac912a", "status": "affected", "versionType": "git"}, {"version": "fa059b856a593a7bddd4d3779ae8ab1380e05d91", "lessThan": "843e913cef4e33723663a899727f685a95ab53fe", "status": "affected", "versionType": "git"}, {"version": "fa059b856a593a7bddd4d3779ae8ab1380e05d91", "lessThan": "b56c49897bdac5cb49e3495ef421c391628ee9bb", "status": "affected", "versionType": "git"}, {"version": "fa059b856a593a7bddd4d3779ae8ab1380e05d91", "lessThan": "e311d84c62eb76e025e11a44155b402e55950b83", "status": "affected", "versionType": "git"}, {"version": "fa059b856a593a7bddd4d3779ae8ab1380e05d91", "lessThan": "fc71f409b22ca831a9f87a2712eaa09ef2bb4a5e", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nvme/host/pci.c"], "versions": [{"version": "5.7", "status": "affected"}, {"version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.167", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.130", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.78", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.19", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.9", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.1.167"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.6.130"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.12.78"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.18.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.19.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "7.0"}]}]}], "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"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-43448", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T15:39:06.139288Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T15:42:54.883Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-43448", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T15:39:06.139288Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T15:39:07.196Z"}}], "cna": {"title": "nvme-pci: Fix race bug in nvme_poll_irqdisable()", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "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"}], "programFiles": ["drivers/nvme/host/pci.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.7"}, {"status": "unaffected", "version": "0", "lessThan": "5.7", "versionType": "semver"}, {"status": "unaffected", "version": "6.1.167", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.130", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.78", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.19", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.9", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/nvme/host/pci.c"], "defaultStatus": "affected"}], "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"}], "x_generator": {"engine": "bippy-1.2.0"}, "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->msix_enabled = 0. Then, pci_irq_vector() will\nreturn MSI-X IRQ(>15) for (1) whereas return INTx IRQ(<=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->cq_vector)) ...(1)\n enable_irq(pci_irq_vector(pdev, nvmeq->cq_vector)) ...(3)\n\ntask 2:\nnvme_reset_work()\n nvme_dev_disable()\n pdev->msix_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 <67> 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 <TASK>\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 </TASK>\nirq event stamp: 74478\nhardirqs last enabled at (74477): [<ffffffffb5720a9c>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline]\nhardirqs last enabled at (74477): [<ffffffffb5720a9c>] _raw_spin_unlock_irq+0x2c/0x60 kernel/locking/spinlock.c:202\nhardirqs last disabled at (74478): [<ffffffffb57207b5>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]\nhardirqs last disabled at (74478): [<ffffffffb57207b5>] _raw_spin_lock_irqsave+0x85/0xa0 kernel/locking/spinlock.c:162\nsoftirqs last enabled at (74304): [<ffffffffb1e9466c>] __do_softirq kernel/softirq.c:656 [inline]\nsoftirqs last enabled at (74304): [<ffffffffb1e9466c>] invoke_softirq kernel/softirq.c:496 [inline]\nsoftirqs last enabled at (74304): [<ffffffffb1e9466c>] __irq_exit_rcu+0xdc/0x120\n---truncated---"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.167", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.130", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.78", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.19", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.19.9", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0", "versionStartIncluding": "5.7"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:24:47.245Z"}}}, "cveMetadata": {"cveId": "CVE-2026-43448", "state": "PUBLISHED", "dateUpdated": "2026-11-06T15:42:54.883Z", "dateReserved": "2026-05-01T14:12:56.010Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-05-08T14:22:14.633Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/nvme/host/pci.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "265dbc9bc33c29f60f90be3e0afe1c4067ebb70b", "status": "affected", "version": "fa059b856a593a7bddd4d3779ae8ab1380e05d91", "versionType": "git"}, {"lessThan": "628773eba024d1107cc9ec157a682cbb42ac912a", "status": "affected", "version": "fa059b856a593a7bddd4d3779ae8ab1380e05d91", "versionType": "git"}, {"lessThan": "843e913cef4e33723663a899727f685a95ab53fe", "status": "affected", "version": "fa059b856a593a7bddd4d3779ae8ab1380e05d91", "versionType": "git"}, {"lessThan": "b56c49897bdac5cb49e3495ef421c391628ee9bb", "status": "affected", "version": "fa059b856a593a7bddd4d3779ae8ab1380e05d91", "versionType": "git"}, {"lessThan": "e311d84c62eb76e025e11a44155b402e55950b83", "status": "affected", "version": "fa059b856a593a7bddd4d3779ae8ab1380e05d91", "versionType": "git"}, {"lessThan": "fc71f409b22ca831a9f87a2712eaa09ef2bb4a5e", "status": "affected", "version": "fa059b856a593a7bddd4d3779ae8ab1380e05d91", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/nvme/host/pci.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.7"}, {"lessThan": "5.7", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.167", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.130", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.78", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.19", "versionType": "semver"}, {"lessThanOrEqual": "6.19.*", "status": "unaffected", "version": "6.19.9", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B5CE982A-7BCF-4A25-8247-C00806377AA4", "versionEndExcluding": "6.1.167", "versionStartIncluding": "5.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C57BB918-DF28-46B3-94F7-144176841267", "versionEndExcluding": "6.6.130", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "28D591F5-B196-4CC9-905C-DC80F116E7A8", "versionEndExcluding": "6.12.78", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D394AC60-6F28-435F-872A-CCDF384B8331", "versionEndExcluding": "6.18.19", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E825E7C3-FEAC-4FD3-8A81-78D7387948C9", "versionEndExcluding": "6.19.9", "versionStartIncluding": "6.19", "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", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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->msix_enabled = 0. Then, pci_irq_vector() will\nreturn MSI-X IRQ(>15) for (1) whereas return INTx IRQ(<=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->cq_vector)) ...(1)\n enable_irq(pci_irq_vector(pdev, nvmeq->cq_vector)) ...(3)\n\ntask 2:\nnvme_reset_work()\n nvme_dev_disable()\n pdev->msix_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 <67> 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 <TASK>\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 </TASK>\nirq event stamp: 74478\nhardirqs last enabled at (74477): [<ffffffffb5720a9c>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline]\nhardirqs last enabled at (74477): [<ffffffffb5720a9c>] _raw_spin_unlock_irq+0x2c/0x60 kernel/locking/spinlock.c:202\nhardirqs last disabled at (74478): [<ffffffffb57207b5>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]\nhardirqs last disabled at (74478): [<ffffffffb57207b5>] _raw_spin_lock_irqsave+0x85/0xa0 kernel/locking/spinlock.c:162\nsoftirqs last enabled at (74304): [<ffffffffb1e9466c>] __do_softirq kernel/softirq.c:656 [inline]\nsoftirqs last enabled at (74304): [<ffffffffb1e9466c>] invoke_softirq kernel/softirq.c:496 [inline]\nsoftirqs last enabled at (74304): [<ffffffffb1e9466c>] __irq_exit_rcu+0xdc/0x120\n---truncated---"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: nvme-pci: Correcci\u00f3n de un error de condici\u00f3n de carrera en nvme_poll_irqdisable() En el siguiente escenario, pdev puede ser deshabilitado entre (1) y (3) por (2). Esto establece pdev -> msix_enabled = 0. Luego, pci_irq_vector() devolver\u00e1 IRQ MSI-X (mayor que 15) para (1) mientras que devolver\u00e1 IRQ INTx (menor o igual que 15) para (2). Esto causa una advertencia de IRQ porque intenta habilitar una IRQ INTx que nunca antes ha sido deshabilitada. Para solucionar esto, guarde el n\u00famero de IRQ en una variable local y asegure que disable_irq() y enable_irq() operen sobre el mismo n\u00famero de IRQ. Incluso si pci_free_irq_vectors() libera la IRQ concurrentemente, disable_irq() y enable_irq() en un n\u00famero de IRQ obsoleto sigue siendo v\u00e1lido y seguro, y la contabilidad de profundidad permanece equilibrada. tarea 1:\nnvme_poll_irqdisable() disable_irq(pci_irq_vector(pdev, nvmeq -> cq_vector)) ...(1) enable_irq(pci_irq_vector(pdev, nvmeq -> cq_vector)) ...(3) tarea 2:\nnvme_reset_work() nvme_dev_disable() pdev -> msix_enable = 0; ...(2) registro de fallo: ------------[ cortar aqu\u00ed ]------------\nHabilitaci\u00f3n desequilibrada para IRQ 10\nADVERTENCIA: kernel/irq/manage.c:753 en __enable_irq+0x102/0x190 kernel/irq/manage.c:753, CPU#1: kworker/1:0H/26\nM\u00f3dulos enlazados:\nCPU: 1 UID: 0 PID: 26 Comm: kworker/1:0H No contaminado 6.19.0-dirty #9 PREEMPT(voluntario)\nNombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014\nCola de trabajo: 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 menor que 67mayor que 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\nTraza de llamada: [TAREA] enable_irq+0x121/0x1e0 kernel/irq/manage.c:797 nvme_poll_irqdisable+0x162/0x1c0 drivers/nvme/host/pci.c:1494 nvme_timeout+0x965/0x 14b0 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+0x969/0x 1e80 block/blk-mq-tag.c:536 blk_mq_timeout_work+0x627/0x870 block/blk-mq.c:1763 process_one_work+0x956/0x 1aa0 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 [/TAREA]\nmarca de tiempo de evento irq: 74478\nhardirqs \u00faltima habilitaci\u00f3n en (74477): [[ffffffffb5720a9c]] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline]\nhardirqs \u00faltima habilitaci\u00f3n en (74477): [[ffffffffb5720a9c]] _raw_spin_unlock_irq+0x2c/0x60 kernel/locking/spinlock.c:202\nhardirqs \u00faltima deshabilitaci\u00f3n en (74478): [[ffffffffb57207b5]] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]\nhardirqs \u00faltima deshabilitaci\u00f3n en (74478): [[ffffffffb57207b5]] _raw_spin_lock_irqsave+0x85/0xa0 kernel/locking/spinlock.c:162\nsoftirqs \u00faltima habilitaci\u00f3n en (74304): [[ffffffffb1e9466c]] __do_softirq kernel/softirq.c:656 [inline] --TRUNCADO--"}], "id": "CVE-2026-43448", "lastModified": "2026-11-11T20:10:00.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43448", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T15:39:06.139288Z", "version": "2.0.3"}}]}, "published": "2026-05-08T15:16:57.323", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: nvme-pci: Fix race bug in nvme_poll_irqdisable()", "id": "2468248", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468248"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-821", "details": ["A flaw was found in the Linux kernel's nvme-pci driver. A race condition exists in the `nvme_poll_irqdisable()` function, where the device can be concurrently disabled by `nvme_reset_work()`. This can lead to an unbalanced interrupt (IRQ) enable operation, resulting in a kernel warning. This issue may cause system instability or a denial of service (DoS) condition."], "name": "CVE-2026-43448", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43448\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43448\nhttps://lore.kernel.org/linux-cve-announce/2026050856-CVE-2026-43448-4484@gregkh/T"], "threat_severity": "Moderate"}

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