CVE-2026-53231

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-06-25. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 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: 0%CVSS: 5.5Exploit: None knownExposed: 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: phy: don't try to setup PHY-driven SFP cages when using genphy

We don't have support for PHY-driver SFP cages with the genphy code.

On top of that, it was found by sashiko that running sfp_bus_add_upstream() for genphy deadlocks, as for genphy the PHY probing runs under RTNL, which isn't the case for non-genphy drivers.

This problem was reproduced, and does lead to a deadlock on RTNL.

Before the blamed commit, the phy_sfp_probe() call was made by individual PHY drivers, so there was no way to get to the SFP probing path when using genphy.

Let's therefore only run phy_sfp_probe when not using genphy.

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
0%
EPSS %ILE
1%
KEV
Not listed

Published

June 25, 2026

Last Modified

July 2, 2026

Advisory Details (2)

Auto-updated Jul 3, 2026
No patch confirmed yet.
generic

net: phy: don't try to setup PHY-driven SFP cages when using genphy - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ef8d739eee6f85303cbecebc01eb72f063de74e0
generic

net: phy: don't try to setup PHY-driven SFP cages when using genphy - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5a0082ec20a05ef2378410323a5089a8f1786f4a

Vendor Advisories for CVE-2026-53231(1)

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

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (142 versions)7.0.13-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 62× 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 121 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-53231?
CVE-2026-53231 is a medium vulnerability published on June 25, 2026. In the Linux kernel, the following vulnerability has been resolved: net: phy: don't try to setup PHY-driven SFP cages when using genphy We don't have support for PHY-driver SFP cages with the genphy code. On top of that, it was found by sashiko that running sfpbusadd_upstream() for genphy…
When was CVE-2026-53231 disclosed?
CVE-2026-53231 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on July 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53231 actively exploited?
CVE-2026-53231 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 98.6% of all scored CVEs.
What is the CVSS score of CVE-2026-53231?
CVE-2026-53231 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-53231?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53231, 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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