PT-2026-34391 · Linux · Linux Kernel

Published 2026-04-22 · Updated 2026-04-22 · CVE-2026-31486

Positive Technologies (AI Summary)

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

Description Race conditions can occur in the hwmon (pmbus/core) component because the regulator operations pmbus regulator get voltage(), pmbus regulator set voltage(), and pmbus regulator list voltage() access PMBus registers and shared data without the protection of the update lock mutex.

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

Related Identifiers

CVE-2026-31486

Affected Products

Linux Kernel

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-31486 · Security Note
• https://git.kernel.org/stable/c/4e9d723d9f198b86f6882a84c501ba1f39e8d055 · Note
• https://git.kernel.org/stable/c/2c77ae315f3ce9d2c8e1609be74c9358c1fe4e07 · Note
• https://twitter.com/CVEnew/status/2046979994539180456 · Twitter Post
• https://git.kernel.org/stable/c/754bd2b4a084b90b5e7b630e1f423061a9b9b761 · Note