PT-2025-44125 · Linux · Linux Kernel

Published 2025-10-28 · Updated 2025-10-28 · CVE-2025-40057

Positive Technologies · (AI Summary)

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

Description The Linux kernel contains an issue where an excessive value for

max vclocks

can lead to a warning in

max vclocks store

due to

kcalloc

being unable to handle the allocation. This was reported by syzbot. The issue involves a lack of an upper bound on the

max vclocks

parameter.

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

Related Identifiers

CVE-2025-40057

Affected Products

Linux Kernel

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2025-40057 · Security Note
• https://twitter.com/CVEnew/status/1983149462047555901 · Twitter Post
• https://git.kernel.org/stable/c/35ce5f163889dbce88eda1df661b357a09bbed87 · Note
• https://git.kernel.org/stable/c/8dd446056336faa2283d62cefc2f576536845edc · Note
• https://git.kernel.org/stable/c/e9f35294e18da82162004a2f35976e7031aaf7f9 · Note