CVE-2026-46304

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-08. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

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] [ 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---

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

June 8, 2026

Last Modified

July 8, 2026

Advisory Details (8)

Auto-updated Jun 14, 2026
No patch confirmed yet.
generic

nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ee6e20c4bc9eae542a0954a368449532383169d4
generic

nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ae5b0cad163833e10b271e9becc05d81dae56e5f
generic

nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/aade8abd8b868b6ffa9697aadaea28ec7f65bee6
generic

nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a696fbbd5240b4ac9b166f7bd4c550882ff543f1
generic

nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9a4d7222c0955b221e38bb66d10e6bccb672c8a1
generic

nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8d66ba89480ff098a58d79003a505f383aa4e920
generic

nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/781f47d641432c26c19625b2cdd7f40825097592
generic

nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/551f445a56a11a6457550cddcf39c9ebb8bcacc6

Vendor Advisories for CVE-2026-46304(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(27)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-07-29ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-07-29ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-07-29ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-07-29ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-07-29ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-07-29ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-07-29ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-07-29ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-07-29ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-07-29ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-07-29ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-07-29ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-07-29ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-07-29ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-07-29ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-07-29ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-07-29ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-07-29ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-07-29ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-07-29ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-07-29ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-07-29ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-07-29ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-07-29ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-07-29ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-07-29ubuntu
ubuntulinux-tools-nvidia-hwe-22.04-edge (6.8.0-1059.62~22.04.1) @ jammy2026-07-29ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Additional Vendor Advisories

(24)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 20× in last 7d / 86× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 160 total refreshes for this CVE.

  1. 2026-07-29 06:17 UTCEG score recompute
  2. 2026-07-29 06:17 UTCVendor advisory
  3. 2026-07-29 06:16 UTCGHSA enrichment
  4. 2026-07-28 15:36 UTCEPSS rescore
  5. 2026-07-28 02:54 UTCEG score recompute
  6. 2026-07-28 02:54 UTCVendor advisory
  7. 2026-07-28 02:54 UTCGHSA enrichment
  8. 2026-07-27 14:13 UTCEPSS rescore
  9. 2026-07-27 10:19 UTCVendor advisory
  10. 2026-07-27 10:19 UTCGHSA enrichment
  11. 2026-07-26 21:42 UTCEG score recompute
  12. 2026-07-26 21:42 UTCVendor advisory
  13. 2026-07-26 21:41 UTCGHSA enrichment
  14. 2026-07-26 14:54 UTCEPSS rescore
  15. 2026-07-26 14:54 UTCEPSS rescore
  16. 2026-07-25 14:18 UTCEPSS rescore
  17. 2026-07-24 14:17 UTCEPSS rescore
  18. 2026-07-23 14:18 UTCEPSS rescore
  19. 2026-07-23 03:17 UTCEG score recompute
  20. 2026-07-22 14:08 UTCEPSS rescore
  21. 2026-07-21 15:24 UTCEPSS rescore
  22. 2026-07-20 17:08 UTCEPSS rescore
  23. 2026-07-19 02:29 UTCEPSS rescore
  24. 2026-07-18 10:04 UTCEPSS rescore
  25. 2026-07-16 17:03 UTCEPSS rescore
Show 75 more
  1. 2026-07-16 11:53 UTCVendor advisory
  2. 2026-07-16 11:53 UTCGHSA enrichment
  3. 2026-07-15 22:24 UTCVendor advisory
  4. 2026-07-15 22:23 UTCGHSA enrichment
  5. 2026-07-15 16:57 UTCEPSS rescore
  6. 2026-07-15 02:00 UTCEPSS rescore
  7. 2026-07-14 15:23 UTCVendor advisory
  8. 2026-07-14 15:23 UTCGHSA enrichment
  9. 2026-07-14 02:46 UTCVendor advisory
  10. 2026-07-14 02:46 UTCGHSA enrichment
  11. 2026-07-13 22:30 UTCEPSS rescore
  12. 2026-07-13 06:13 UTCEPSS rescore
  13. 2026-07-12 11:31 UTCVendor advisory
  14. 2026-07-12 11:31 UTCGHSA enrichment
  15. 2026-07-12 05:46 UTCEPSS rescore
  16. 2026-07-11 22:45 UTCVendor advisory
  17. 2026-07-11 22:45 UTCGHSA enrichment
  18. 2026-07-11 10:09 UTCVendor advisory
  19. 2026-07-11 10:09 UTCGHSA enrichment
  20. 2026-07-11 08:27 UTCEPSS rescore
  21. 2026-07-10 21:28 UTCVendor advisory
  22. 2026-07-10 21:28 UTCGHSA enrichment
  23. 2026-07-09 19:10 UTCEPSS rescore
  24. 2026-07-09 04:37 UTCVendor advisory
  25. 2026-07-09 04:37 UTCGHSA enrichment
  26. 2026-07-08 15:54 UTCVendor advisory
  27. 2026-07-08 15:54 UTCGHSA enrichment
  28. 2026-07-08 15:16 UTCEPSS rescore
  29. 2026-07-08 02:46 UTCVendor advisory
  30. 2026-07-08 02:46 UTCGHSA enrichment
  31. 2026-07-07 13:46 UTCEPSS rescore
  32. 2026-07-06 16:27 UTCEPSS rescore
  33. 2026-07-06 02:23 UTCEPSS rescore
  34. 2026-07-05 17:31 UTCVendor advisory
  35. 2026-07-05 17:31 UTCGHSA enrichment
  36. 2026-07-05 03:33 UTCVendor advisory
  37. 2026-07-05 03:33 UTCGHSA enrichment
  38. 2026-07-05 02:30 UTCEPSS rescore
  39. 2026-07-04 14:57 UTCVendor advisory
  40. 2026-07-04 14:57 UTCGHSA enrichment
  41. 2026-07-04 06:31 UTCEPSS rescore
  42. 2026-07-03 16:14 UTCVendor advisory
  43. 2026-07-03 16:14 UTCGHSA enrichment
  44. 2026-07-03 00:58 UTCVendor advisory
  45. 2026-07-03 00:58 UTCGHSA enrichment
  46. 2026-07-02 12:18 UTCVendor advisory
  47. 2026-07-02 12:18 UTCGHSA enrichment
  48. 2026-07-01 22:57 UTCVendor advisory
  49. 2026-07-01 22:57 UTCGHSA enrichment
  50. 2026-07-01 15:07 UTCEPSS rescore
  51. 2026-07-01 10:14 UTCVendor advisory
  52. 2026-07-01 10:14 UTCGHSA enrichment
  53. 2026-06-30 23:22 UTCEPSS rescore
  54. 2026-06-30 21:38 UTCVendor advisory
  55. 2026-06-30 21:38 UTCGHSA enrichment
  56. 2026-06-30 08:47 UTCVendor advisory
  57. 2026-06-30 08:47 UTCGHSA enrichment
  58. 2026-06-29 20:08 UTCVendor advisory
  59. 2026-06-29 20:08 UTCGHSA enrichment
  60. 2026-06-29 14:06 UTCEPSS rescore
  61. 2026-06-29 14:06 UTCEPSS rescore
  62. 2026-06-29 07:33 UTCVendor advisory
  63. 2026-06-29 07:32 UTCGHSA enrichment
  64. 2026-06-28 15:20 UTCVendor advisory
  65. 2026-06-28 15:20 UTCGHSA enrichment
  66. 2026-06-28 14:07 UTCEPSS rescore
  67. 2026-06-28 04:56 UTCEPSS rescore
  68. 2026-06-28 04:56 UTCEPSS rescore
  69. 2026-06-28 02:41 UTCVendor advisory
  70. 2026-06-28 02:41 UTCGHSA enrichment
  71. 2026-06-27 14:05 UTCVendor advisory
  72. 2026-06-27 14:05 UTCGHSA enrichment
  73. 2026-06-27 03:08 UTCEPSS rescore
  74. 2026-06-27 01:22 UTCVendor advisory
  75. 2026-06-27 01:22 UTCGHSA enrichment

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2026-46304?
CVE-2026-46304 is a high vulnerability published on June 8, 2026. In the Linux kernel, the following vulnerability has been resolved: nvmet: avoid recursive nvmet-wq flush in nvmetctrlfree nvmettcpreleasequeuework() runs on nvmet-wq and can drop the final controller reference through nvmetcqput(). If that triggers nvmetctrlfree(), the teardown path flushes…
When was CVE-2026-46304 disclosed?
CVE-2026-46304 was first published in the National Vulnerability Database on June 8, 2026, with the most recent update on July 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46304 actively exploited?
CVE-2026-46304 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 68.5% of all scored CVEs.
What is the CVSS score of CVE-2026-46304?
CVE-2026-46304 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-46304?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46304, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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