CVE-2026-43199

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-06. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

net/mlx5e: Fix "scheduling while atomic" in IPsec MAC address query

Fix a "scheduling while atomic" bug in mlx5e_ipsec_init_macs() by replacing mlx5_query_mac_address() with ether_addr_copy() to get the local MAC address directly from netdev->dev_addr.

The issue occurs because mlx5_query_mac_address() queries the hardware which involves mlx5_cmd_exec() that can sleep, but it is called from the mlx5e_ipsec_handle_event workqueue which runs in atomic context.

The MAC address is already available in netdev->dev_addr, so no need to query hardware. This avoids the sleeping call and resolves the bug.

Call trace: BUG: scheduling while atomic: kworker/u112:2/69344/0x00000200 __schedule+0x7ab/0xa20 schedule+0x1c/0xb0 schedule_timeout+0x6e/0xf0 __wait_for_common+0x91/0x1b0 cmd_exec+0xa85/0xff0 [mlx5_core] mlx5_cmd_exec+0x1f/0x50 [mlx5_core] mlx5_query_nic_vport_mac_address+0x7b/0xd0 [mlx5_core] mlx5_query_mac_address+0x19/0x30 [mlx5_core] mlx5e_ipsec_init_macs+0xc1/0x720 [mlx5_core] mlx5e_ipsec_build_accel_xfrm_attrs+0x422/0x670 [mlx5_core] mlx5e_ipsec_handle_event+0x2b9/0x460 [mlx5_core] process_one_work+0x178/0x2e0 worker_thread+0x2ea/0x430

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
35.6%
KEV
Not listed

Published

May 6, 2026

Last Modified

May 11, 2026

Advisory Details (4)

Auto-updated May 11, 2026
No patch confirmed yet.
generic

net/mlx5e: Fix "scheduling while atomic" in IPsec MAC address query - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e1407fb7c337373dfaaae2445d828b0b9ae26a29
generic

net/mlx5e: Fix "scheduling while atomic" in IPsec MAC address query - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/859380694f434597407632c29f30fdb5e763e6cc
generic

net/mlx5e: Fix "scheduling while atomic" in IPsec MAC address query - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/57957bc7f1865778ec9b1618e15515feb6df7eb4
generic

net/mlx5e: Fix "scheduling while atomic" in IPsec MAC address query - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/546de94e41e92e1f7dc6213615fb7c794d05db98

Vendor Advisories for CVE-2026-43199(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 32× 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 118 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-43199?
CVE-2026-43199 is a high vulnerability published on May 6, 2026. In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix "scheduling while atomic" in IPsec MAC address query Fix a "scheduling while atomic" bug in mlx5eipsecinit_macs() by replacing mlx5querymacaddress() with etheraddr_copy() to get the local MAC address directly from…
When was CVE-2026-43199 disclosed?
CVE-2026-43199 was first published in the National Vulnerability Database on May 6, 2026, with the most recent update on May 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43199 actively exploited?
CVE-2026-43199 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 35.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43199?
CVE-2026-43199 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-43199?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43199, 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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