CVE-2024-56641

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2024-12-27. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

net/smc: initialize close_work early to avoid warning

We encountered a warning that close_work was canceled before initialization.

WARNING: CPU: 7 PID: 111103 at kernel/workqueue.c:3047 __flush_work+0x19e/0x1b0 Workqueue: events smc_lgr_terminate_work [smc] RIP: 0010:__flush_work+0x19e/0x1b0 Call Trace: ? __wake_up_common+0x7a/0x190 ? work_busy+0x80/0x80 __cancel_work_timer+0xe3/0x160 smc_close_cancel_work+0x1a/0x70 [smc] smc_close_active_abort+0x207/0x360 [smc] __smc_lgr_terminate.part.38+0xc8/0x180 [smc] process_one_work+0x19e/0x340 worker_thread+0x30/0x370 ? process_one_work+0x340/0x340 kthread+0x117/0x130 ? __kthread_cancel_work+0x50/0x50 ret_from_fork+0x22/0x30

This is because when smc_close_cancel_work is triggered, e.g. the RDMA driver is rmmod and the LGR is terminated, the conn->close_work is flushed before initialization, resulting in WARN_ON(!work->func).

__smc_lgr_terminate | smc_connect_{rdma|ism} ------------------------------------------------------------- | smc_conn_create | \- smc_lgr_register_conn for conn in lgr->conns_all | \- smc_conn_kill | \- smc_close_active_abort | \- smc_close_cancel_work | \- cancel_work_sync | \- __flush_work | (close_work) | | smc_close_init | \- INIT_WORK(&close_work)

So fix this by initializing close_work before establishing the connection.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
41%
KEV
Not listed

Published

December 27, 2024

Last Modified

August 5, 2026

Advisory Details (3)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

net/smc: initialize close_work early to avoid warning - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0541db8ee32c09463a72d0987382b3a3336b0043
generic

net/smc: initialize close_work early to avoid warning - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6638e52dcfafaf1b9cbc34544f0c832db0069ea1
generic

net/smc: initialize close_work early to avoid warning - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f0c37002210aaede10dae849d1a78efc2243add2

Patch Availability(15)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual (6.8.0-58.60) @ noble2026-05-23ubuntu
ubuntulinux-tools-gkeop-6.8 (6.8.0-1010.12) @ noble2026-05-23ubuntu
ubuntulinux-tools-aws-edge (6.8.0-1027.29~22.04.1) @ jammy2026-05-23ubuntu
ubuntulinux-tools-gcp-edge (6.8.0-1028.30~22.04.1) @ jammy2026-05-23ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.11.0-21.21) @ oracular2026-05-23ubuntu
ubuntulinux-tools-lowlatency-64k (6.11.0-1011.12) @ oracular2026-05-23ubuntu
ubuntulinux-tools-oem-24.04b (6.11.0-1017.17) @ noble2026-05-23ubuntu
ubuntulinux-tools-raspi (6.11.0-1010.10) @ oracular2026-05-23ubuntu
ubuntulinux-tools-lowlatency-hwe-24.04-edge (6.11.0-1011.12~24.04.1) @ noble2026-05-23ubuntu
ubuntulinux-tools-realtime-hwe-24.04 (6.8.1-1020.21) @ noble2026-05-23ubuntu
ubuntulinux-tools-azure-nvidia (6.8.0-1014.15) @ noble2026-05-23ubuntu
ubuntulinux-tools-raspi (6.8.0-1028.32) @ noble2026-05-23ubuntu
ubuntulinux-tools-raspi-realtime (6.8.0-2023.24) @ noble2026-05-23ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-58.60~22.04.1) @ jammy2026-05-23ubuntu
linuxKernel @ 6.6.66—osv

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.

All Vendor Advisories

(14)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 13× in last 7d / 42× 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 120 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2024-56641?
CVE-2024-56641 is a medium vulnerability published on December 27, 2024. In the Linux kernel, the following vulnerability has been resolved: net/smc: initialize close_work early to avoid warning We encountered a warning that close_work was canceled before initialization. WARNING: CPU: 7 PID: 111103 at kernel/workqueue.c:3047 flush_work+0x19e/0x1b0 Workqueue: events…
When was CVE-2024-56641 disclosed?
CVE-2024-56641 was first published in the National Vulnerability Database on December 27, 2024, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-56641 actively exploited?
CVE-2024-56641 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 59.2% of all scored CVEs.
What is the CVSS score of CVE-2024-56641?
CVE-2024-56641 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2024-56641?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-56641, 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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