CVE-2026-43296

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-08. 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:

octeontx2-af: Workaround SQM/PSE stalls by disabling sticky

NIX SQ manager sticky mode is known to cause stalls when multiple SQs share an SMQ and transmit concurrently. Additionally, PSE may deadlock on transitions between sticky and non-sticky transmissions. There is also a credit drop issue observed when certain condition clocks are gated.

work around these hardware errata by:

  • Disabling SQM sticky operation:
  • Clear TM6 (bit 15)
  • Clear TM11 (bit 14)
  • Disabling sticky → non-sticky transition path that can deadlock PSE:
  • Clear TM5 (bit 23)
  • Preventing credit drops by keeping the control-flow clock enabled:
  • Set TM9 (bit 21)

These changes are applied via NIX_AF_SQM_DBG_CTL_STATUS. With this configuration the SQM/PSE maintain forward progress under load without credit loss, at the cost of disabling sticky optimizations.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
30.8%
KEV
Not listed

Published

May 8, 2026

Last Modified

May 15, 2026

Advisory Details (8)

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

octeontx2-af: Workaround SQM/PSE stalls by disabling sticky - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d9b549b6951ba178ec14339a031cae65f4e43fe1
generic

octeontx2-af: Workaround SQM/PSE stalls by disabling sticky - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d0b3c8a80336029d9356f429151eb27922d80a3c
generic

octeontx2-af: Workaround SQM/PSE stalls by disabling sticky - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cec2ceb35ce7bc874c43812bb39200d6cf691b87
generic

octeontx2-af: Workaround SQM/PSE stalls by disabling sticky - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b7eba260a34e854e2487b8363c11976f082df00d
generic

octeontx2-af: Workaround SQM/PSE stalls by disabling sticky - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9a3fd301329474f449e75f86d8a4f6b9c603fd6c
generic

octeontx2-af: Workaround SQM/PSE stalls by disabling sticky - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8052d0587fb14b85539c3a14a226586c0c3d6b4c
generic

octeontx2-af: Workaround SQM/PSE stalls by disabling sticky - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/70e9a5760abfb6338d63994d4de6b0778ec795d6
generic

octeontx2-af: Workaround SQM/PSE stalls by disabling sticky - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/36cc5a5e0178d5fb79e04173b8aa623b0108819a

Vendor Advisories for CVE-2026-43296(1)

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

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 47× 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 133 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-43296?
CVE-2026-43296 is a high vulnerability published on May 8, 2026. In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: Workaround SQM/PSE stalls by disabling sticky NIX SQ manager sticky mode is known to cause stalls when multiple SQs share an SMQ and transmit concurrently. Additionally, PSE may deadlock on transitions between sticky…
When was CVE-2026-43296 disclosed?
CVE-2026-43296 was first published in the National Vulnerability Database on May 8, 2026, with the most recent update on May 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43296 actively exploited?
CVE-2026-43296 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 30.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43296?
CVE-2026-43296 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-43296?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43296, 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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