CVE-2026-43457

MEDIUMNVD 5.55.5—Trending — 3 sources updated this week

5.5

In the Linux kernel, the following vulnerability has been resolved:

mctp: i2c: fix skb memory leak in receive path

When 'midev->allow_rx' is false, the newly allocated skb isn't consumed by netif_rx(), it needs to free the skb directly.

CVSS v3: 5.5
EG Score: 5.5(high)
EPSS: 2.4%
KEV: Not listed

Published

May 8, 2026

Last Modified

May 21, 2026

References (6)

416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1b1be322342a6b0085bf6ee52235e5ac9834ec25
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1ec54187e1aa40a4cfa2b265e9a311179f24b98d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9f81be2ab9d8e4744871bfb3e868ef413413829f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d7900a43b0a314a645ca0a2adf45928dbc7001f4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69

Vendor Advisories for CVE-2026-43457(1)

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

GHSA-2mxh-qrpv-mfvx
GitHub Security AdvisoriesMedium
In the Linux kernel, the following vulnerability has been resolved: mctp: i2c: fix skb memory...

Weakness Classification(1)

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

CWE-401Missing Release of Memory after Effective Lifetime (Memory Leak)

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-05 06:10 UTCepss_batch
2026-06-05 06:10 UTCepss_batch
2026-06-05 03:12 UTCEG score recompute
2026-06-05 03:12 UTCGHSA enrichment
2026-06-04 13:12 UTCepss_batch
2026-06-04 13:12 UTCepss_batch
2026-06-04 04:19 UTCEG score recompute
2026-06-04 04:19 UTCGHSA enrichment
2026-06-03 05:27 UTCEG score recompute
2026-06-03 05:26 UTCGHSA enrichment
2026-06-02 20:13 UTCepss_batch
2026-06-02 06:34 UTCEG score recompute
2026-06-02 06:34 UTCGHSA enrichment
2026-06-01 13:52 UTCepss_batch
2026-06-01 13:52 UTCepss_batch
2026-06-01 07:42 UTCEG score recompute▲ 5.50
2026-06-01 07:42 UTCGHSA enrichment
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch

Frequently asked(5)

What is CVE-2026-43457?

CVE-2026-43457 is a medium vulnerability published on May 8, 2026. In the Linux kernel, the following vulnerability has been resolved: mctp: i2c: fix skb memory leak in receive path When 'midev->allow_rx' is false, the newly allocated skb isn't consumed by netif_rx(), it needs to free the skb directly.

When was CVE-2026-43457 disclosed?

CVE-2026-43457 was first published in the National Vulnerability Database on May 8, 2026, with the most recent update on May 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-43457 actively exploited?

CVE-2026-43457 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-43457?

CVE-2026-43457 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2026-43457?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43457, 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.

Dependency Blast Radius

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CVE-2026-43457

📅 Published

🔄 Last Modified

🔗 References (6)

📣 Vendor Advisories for CVE-2026-43457(1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)