CVE-2025-40056Improper Input Validation in Linux

Severity
3.2LOWOSV
No vector
EPSS
0.0%
top 87.15%
CISA KEV
Not in KEV
Exploit
No known exploits
Timeline
PublishedOct 28
Latest updateApr 9

Description

In the Linux kernel, the following vulnerability has been resolved: vhost: vringh: Fix copy_to_iter return value check The return value of copy_to_iter can't be negative, check whether the copied length is equal to the requested length instead of checking for negative values.

Affected Packages7 packages

Linuxlinux/linux_kernel6.0.06.1.156+3
Debianlinux/linux_kernel< 6.1.158-1+2
Ubuntulinux/linux_kernel< 6.8.0-106.106+1
CVEListV5linux/linux309bba39c945ac8ab8083ac05cd6cfe5822968e0bd71e7e0a612740e4de5524880c7cd40293af5f7+5

🔴Vulnerability Details

16
OSV
linux-raspi, linux-raspi-realtime vulnerabilities2026-04-01
OSV
linux-azure-6.8 vulnerabilities2026-03-25
OSV
linux-azure vulnerabilities2026-03-25
OSV
linux-aws-6.8 vulnerabilities2026-03-23
OSV
linux-realtime, linux-realtime-6.8 vulnerabilities2026-03-17

📋Vendor Advisories

16
Ubuntu
Linux kernel (Azure FIPS) vulnerabilities2026-04-09
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities2026-04-01
Ubuntu
Linux kernel (Azure) vulnerabilities2026-03-25
Ubuntu
Linux kernel (Azure) vulnerabilities2026-03-25
Ubuntu
Linux kernel (AWS) vulnerabilities2026-03-23