PT-2026-37561 · Linux+1 · Linux Kernel+1

CVE-2026-43221 · Published 2026-05-06 · Updated 2026-07-21

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the IPMB (Intelligent Platform Management Bus) component where the event handler fails to initialize read bytes. Although IPMB does not utilize i2c reads, the handler must set a value to prevent i2c reads from returning uninitialized data from the bus driver.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use of Uninitialized Resource

Weakness Enumeration

CWE-908

Related Identifiers

CVE-2026-43221

SUSE-SU-2026:3130-1

SUSE-SU-2026:3166-1

USN-8492-1

USN-8492-2

USN-8492-3

USN-8492-4

USN-8492-5

USN-8497-1

USN-8498-1

USN-8499-1

Affected Products

Linuxmint

Linux Kernel

References · 1607

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43221.json · Exploit
• https://ubuntu.com/security/CVE-2025-71190 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31649 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31659 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46260 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45915 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45910 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43128 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43133 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45893 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43268 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-22991 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31418 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23254 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23121 · Vendor Advisory