CVE-2026-23357

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-03-25. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: 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:

can: mcp251x: fix deadlock in error path of mcp251x_open

The mcp251x_open() function call free_irq() in its error path with the mpc_lock mutex held. But if an interrupt already occurred the interrupt handler will be waiting for the mpc_lock and free_irq() will deadlock waiting for the handler to finish.

This issue is similar to the one fixed in commit 7dd9c26bd6cf ("can: mcp251x: fix deadlock if an interrupt occurs during mcp251x_open") but for the error path.

To solve this issue move the call to free_irq() after the lock is released. Setting priv->force_quit = 1 beforehand ensure that the IRQ handler will exit right away once it acquired the lock.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
1.0%
KEV
Not listed

Published

March 25, 2026

Last Modified

April 24, 2026

References (8)

Vendor Advisories for CVE-2026-23357(1)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 6.1.167—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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 41× 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 109 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 02:00 UTCEPSS rescore
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  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-29 05:02 UTCOSV refresh
  25. 2026-06-28 14:07 UTCEPSS rescore
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  1. 2026-06-28 14:07 UTCEPSS rescore
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  21. 2026-06-11 23:31 UTCEG score recompute
  22. 2026-06-11 23:31 UTCVendor advisory
  23. 2026-06-11 23:31 UTCGHSA enrichment
  24. 2026-06-11 14:00 UTCEPSS rescore
  25. 2026-06-10 22:18 UTCEPSS rescore
  26. 2026-06-10 15:00 UTCEG score recompute
  27. 2026-06-10 15:00 UTCVendor advisory
  28. 2026-06-10 15:00 UTCGHSA enrichment
  29. 2026-06-10 13:22 UTCEPSS rescore
  30. 2026-06-09 15:55 UTCEG score recompute
  31. 2026-06-09 15:55 UTCVendor advisory
  32. 2026-06-09 15:55 UTCGHSA enrichment
  33. 2026-06-08 14:30 UTCEG score recompute
  34. 2026-06-08 14:30 UTCVendor advisory
  35. 2026-06-08 14:30 UTCGHSA enrichment
  36. 2026-06-08 14:17 UTCEPSS rescore
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  38. 2026-06-07 15:25 UTCEPSS rescore
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  40. 2026-06-07 12:32 UTCEG score recompute
  41. 2026-06-07 12:32 UTCVendor advisory
  42. 2026-06-07 12:32 UTCGHSA enrichment
  43. 2026-06-06 13:47 UTCEPSS rescore
  44. 2026-06-06 13:47 UTCEPSS rescore
  45. 2026-06-06 13:47 UTCEPSS rescore
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  57. 2026-06-01 07:13 UTCOSV refresh
  58. 2026-05-31 22:30 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2026-23357?
CVE-2026-23357 is a medium vulnerability published on March 25, 2026. In the Linux kernel, the following vulnerability has been resolved: can: mcp251x: fix deadlock in error path of mcp251x_open The mcp251xopen() function call freeirq() in its error path with the mpc_lock mutex held. But if an interrupt already occurred the interrupt handler will be waiting for the…
When was CVE-2026-23357 disclosed?
CVE-2026-23357 was first published in the National Vulnerability Database on March 25, 2026, with the most recent update on April 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-23357 actively exploited?
CVE-2026-23357 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-23357?
CVE-2026-23357 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-23357?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23357, 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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