HOMEVULNERABILITIESCVE-2026-31627
HIGH

CVE-2026-31627

Published: April 24, 2026· Updated: Apr 27, 2026

7.8
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:4.8th

Official Description

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

i2c: s3c24xx: check the size of the SMBUS message before using it

The first byte of an i2c SMBUS message is the size, and it should be

verified to ensure that it is in the range of 0..I2C_SMBUS_BLOCK_MAX

before processing it.

This is the same logic that was added in commit a6e04f05ce0b ("i2c:

tegra: check msg length in SMBUS block read") to the i2c tegra driver.

NVD Source

Technical Analysis

CVE-2026-31627 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Linux1 product
linux kernel
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://git.kernel.org/stable/c/377fae22a137b6b89f3f32399a58c52cf2325416
PATCHhttps://git.kernel.org/stable/c/71b3c316b22c555d2769126a92b1244b15a9750d
PATCHhttps://git.kernel.org/stable/c/aaaaec39ddbcd06770dca7f1adebc3b1242ebe7b
PATCHhttps://git.kernel.org/stable/c/c0128c7157d639a931353ea344fb44aad6d6e17a
PATCHhttps://git.kernel.org/stable/c/d87d5620125a03b1eadbd5df39748215d3db7ddb
PATCHhttps://git.kernel.org/stable/c/fa00738ab30b07db1a43b9c85fc56b8cc3b7d197

All References (6)

→
https://git.kernel.org/stable/c/377fae22a137b6b89f3f32399a58c52cf2325416Patch
→
https://git.kernel.org/stable/c/71b3c316b22c555d2769126a92b1244b15a9750dPatch
→
https://git.kernel.org/stable/c/aaaaec39ddbcd06770dca7f1adebc3b1242ebe7bPatch
→
https://git.kernel.org/stable/c/c0128c7157d639a931353ea344fb44aad6d6e17aPatch
→
https://git.kernel.org/stable/c/d87d5620125a03b1eadbd5df39748215d3db7ddbPatch
→
https://git.kernel.org/stable/c/fa00738ab30b07db1a43b9c85fc56b8cc3b7d197Patch

Quick Facts

CVE IDCVE-2026-31627
CVSS Score7.8 / 10
SeverityHIGH
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedApr 24, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-31627 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2026-31627·NVD