CVE-2022-49907

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-05-01. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: 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: mdio: fix undefined behavior in bit shift for __mdiobus_register

Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below:

UBSAN: shift-out-of-bounds in drivers/net/phy/mdio_bus.c:586:27 left shift of 1 by 31 places cannot be represented in type 'int' Call Trace: dump_stack_lvl+0x7d/0xa5 dump_stack+0x15/0x1b ubsan_epilogue+0xe/0x4e __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c __mdiobus_register+0x49d/0x4e0 fixed_mdio_bus_init+0xd8/0x12d do_one_initcall+0x76/0x430 kernel_init_freeable+0x3b3/0x422 kernel_init+0x24/0x1e0 ret_from_fork+0x1f/0x30

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

May 1, 2025

Last Modified

November 11, 2025

References (8)

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 4.9.333—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.

Data Freshness Timeline

(refreshed 7× in last 7d / 45× 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 112 total refreshes for this CVE.

  1. 2026-08-07 16:24 UTCEPSS rescore
  2. 2026-08-06 13:44 UTCEPSS rescore
  3. 2026-08-05 19:15 UTCEPSS rescore
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  17. 2026-07-24 07:11 UTCOSV refresh
  18. 2026-07-23 14:16 UTCEPSS rescore
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  20. 2026-07-23 02:16 UTCEG score recompute
  21. 2026-07-22 23:04 UTCEG score recompute
  22. 2026-07-22 14:06 UTCEPSS rescore
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  24. 2026-07-21 15:23 UTCEPSS rescore
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  1. 2026-07-20 17:05 UTCEPSS rescore
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  8. 2026-07-16 17:00 UTCEPSS rescore
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  20. 2026-07-09 19:08 UTCEPSS rescore
  21. 2026-07-08 15:13 UTCEPSS rescore
  22. 2026-07-07 13:44 UTCEPSS rescore
  23. 2026-07-07 02:51 UTCOSV refresh
  24. 2026-07-06 16:25 UTCEPSS rescore
  25. 2026-07-06 02:21 UTCEPSS rescore
  26. 2026-07-05 02:28 UTCEPSS rescore
  27. 2026-07-04 06:29 UTCEPSS rescore
  28. 2026-07-01 15:04 UTCEPSS rescore
  29. 2026-06-30 23:21 UTCEPSS rescore
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  41. 2026-06-23 21:31 UTCEPSS rescore
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  44. 2026-06-21 14:55 UTCEPSS rescore
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  46. 2026-06-21 01:58 UTCEPSS rescore
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  48. 2026-06-19 19:24 UTCEPSS rescore
  49. 2026-06-19 19:24 UTCEPSS rescore
  50. 2026-06-18 17:51 UTCEPSS rescore
  51. 2026-06-18 17:51 UTCEPSS rescore
  52. 2026-06-18 14:05 UTCOSV refresh
  53. 2026-06-17 17:51 UTCEPSS rescore
  54. 2026-06-17 17:51 UTCEPSS rescore
  55. 2026-06-16 17:51 UTCEPSS rescore
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  68. 2026-06-07 15:23 UTCEPSS rescore
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  70. 2026-06-06 13:46 UTCEPSS rescore
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  74. 2026-06-05 06:09 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2022-49907?
CVE-2022-49907 is a high vulnerability published on May 1, 2025. In the Linux kernel, the following vulnerability has been resolved: net: mdio: fix undefined behavior in bit shift for mdiobus_register Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below: UBSAN: shift-out-of-bounds…
When was CVE-2022-49907 disclosed?
CVE-2022-49907 was first published in the National Vulnerability Database on May 1, 2025, with the most recent update on November 11, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-49907 actively exploited?
CVE-2022-49907 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 87.7% of all scored CVEs.
What is the CVSS score of CVE-2022-49907?
CVE-2022-49907 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2022-49907?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-49907, 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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