CVE-2025-39680

HIGHNVD 7.17.1—

7.1

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

i2c: rtl9300: Fix out-of-bounds bug in rtl9300_i2c_smbus_xfer

The data->block[0] variable comes from user. Without proper check, the variable may be very large to cause an out-of-bounds bug.

Fix this bug by checking the value of data->block[0] first.

commit 39244cc75482 ("i2c: ismt: Fix an out-of-bounds bug in

ismt_access()")

commit 92fbb6d1296f ("i2c: xgene-slimpro: Fix out-of-bounds bug in

xgene_slimpro_i2c_xfer()")

CVSS v3: 7.1
EG Score: 7.1(medium)
EPSS: 3.6%
KEV: Not listed

Published

September 5, 2025

Last Modified

November 25, 2025

References (2)

416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/071e43fcba5ddd9a7813e6cc0aa10299eae41b21
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/57f312b955938fc4663f430cb57a71f2414f601b

Weakness Classification(1)

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

CWE-125Out-of-bounds Read

Data Freshness Timeline

(refreshed 8× in last 7d / 28× 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.

2026-06-16 17:52 UTCEPSS rescore
2026-06-16 17:52 UTCEPSS rescore
2026-06-14 23:17 UTCEPSS rescore
2026-06-13 23:00 UTCEPSS rescore
2026-06-12 23:11 UTCEPSS rescore
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2026-06-10 22:18 UTCEPSS rescore
2026-06-10 13:22 UTCEPSS rescore
2026-06-08 14:16 UTCEPSS rescore
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2026-06-07 15:24 UTCEPSS rescore
2026-06-06 13:47 UTCEPSS rescore
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2026-06-05 22:46 UTCEPSS rescore
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2026-06-05 06:10 UTCEPSS rescore
2026-06-05 06:10 UTCEPSS rescore
2026-06-04 13:12 UTCEPSS rescore
2026-06-04 13:12 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 00:16 UTCEPSS rescore

Show 3 more

2026-05-29 23:20 UTCEG score recompute
2026-05-29 23:19 UTCGHSA enrichment
2026-05-29 13:44 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-39680?

CVE-2025-39680 is a high vulnerability published on September 5, 2025. In the Linux kernel, the following vulnerability has been resolved: i2c: rtl9300: Fix out-of-bounds bug in rtl9300i2csmbus_xfer The data->block[0] variable comes from user. Without proper check, the variable may be very large to cause an out-of-bounds bug. Fix this bug by checking the value of…

When was CVE-2025-39680 disclosed?

CVE-2025-39680 was first published in the National Vulnerability Database on September 5, 2025, with the most recent update on November 25, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-39680 actively exploited?

CVE-2025-39680 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-39680?

CVE-2025-39680 has a CVSS v3 base score of 7.1 (NVD).

How do I remediate CVE-2025-39680?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-39680, 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-2025-39680

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2025-39680?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)