CVE-2022-42324

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2022-11-01. 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.

Oxenstored 32->31 bit integer truncation issues Integers in Ocaml are 63 or 31 bits of signed precision. The Ocaml Xenbus library takes a C uint32_t out of the ring and casts it directly to an Ocaml integer. In 64-bit Ocaml builds this is fine, but in 32-bit builds, it truncates off the most significant bit, and then creates unsigned/signed confusion in the remainder. This in turn can feed a negative value into logic not expecting a negative value, resulting in unexpected exceptions being thrown. The unexpected exception is not handled suitably, creating a busy-loop trying (and failing) to take the bad packet out of the xenstore ring.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
18.9%
KEV
Not listed

Published

November 1, 2022

Last Modified

November 21, 2024

References (16)

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 42× 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.

  1. 2026-07-22 14:06 UTCEPSS rescore
  2. 2026-07-21 15:23 UTCEPSS rescore
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  10. 2026-07-16 16:23 UTCOSV refresh
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  1. 2026-07-02 16:58 UTCEPSS rescore
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  7. 2026-06-28 14:32 UTCOSV refresh
  8. 2026-06-28 14:06 UTCEPSS rescore
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  37. 2026-06-11 03:39 UTCOSV refresh
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  71. 2026-05-25 12:54 UTCEG score recompute
  72. 2026-05-25 12:54 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2022-42324?
CVE-2022-42324 is a medium vulnerability published on November 1, 2022. Oxenstored 32->31 bit integer truncation issues Integers in Ocaml are 63 or 31 bits of signed precision. The Ocaml Xenbus library takes a C uint32_t out of the ring and casts it directly to an Ocaml integer. In 64-bit Ocaml builds this is fine, but in 32-bit builds, it truncates off the most…
When was CVE-2022-42324 disclosed?
CVE-2022-42324 was first published in the National Vulnerability Database on November 1, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-42324 actively exploited?
CVE-2022-42324 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-42324?
CVE-2022-42324 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2022-42324?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-42324, 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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