CVE-2025-40057

Linux Kernel 5.14-6.12.52, 6.13-6.17.2 - Denial of Service via Large max_vclocks Value

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: ptp: Add a upper bound on max_vclocks syzbot reported WARNING in max_vclocks_store. This occurs when the argument max is too large for kcalloc to handle. Extend the guard to guard against values that are too large for kcalloc

References (3)

Core 3

Core References

Patch

https://git.kernel.org/stable/c/8dd446056336faa2283d62cefc2f576536845edc

Patch

https://git.kernel.org/stable/c/35ce5f163889dbce88eda1df661b357a09bbed87

Patch

https://git.kernel.org/stable/c/e9f35294e18da82162004a2f35976e7031aaf7f9

Scores

EPSS 0.0019

EPSS Percentile 9.3%

Details

Status published

Products (10)

linux/Kernel 5.14.0 - 6.12.53linux

linux/Kernel 6.13.0 - 6.17.3linux

Linux/Linux < 5.14

Linux/Linux 5.14

Linux/Linux 6.12.53 - 6.12.*

Linux/Linux 6.17.3 - 6.17.*

Linux/Linux 6.18

Linux/Linux 73f37068d540eba5f93ba3a0019bf479d35ebd76 - 35ce5f163889dbce88eda1df661b357a09bbed87

Linux/Linux 73f37068d540eba5f93ba3a0019bf479d35ebd76 - 8dd446056336faa2283d62cefc2f576536845edc

Linux/Linux 73f37068d540eba5f93ba3a0019bf479d35ebd76 - e9f35294e18da82162004a2f35976e7031aaf7f9

Published Oct 28, 2025

Tracked Since Feb 18, 2026