Linux fanotify Heap Buffer Overflow DoS

The vulnerability of the mntnsfromdentry function in the fanotify component of the Linux kernel is related to the assignment of a null pointer. Exploiting this vulnerability could allow an attacker to cause a service failure...

UBUNTU-CVE-2025-40072

In the Linux kernel, the following vulnerability has been resolved: fanotify: Validate the return value of mntnsfromdentry before dereferencing The function dofanotifymark does not validate if mntnsfromdentry returns NULL before dereferencing mntns-userns. This causes a NULL pointer dereference i...

CVE-2025-40072 fanotify: Validate the return value of mnt_ns_from_dentry() before dereferencing

In the Linux kernel, the following vulnerability has been resolved: fanotify: Validate the return value of mntnsfromdentry before dereferencing The function dofanotifymark does not validate if mntnsfromdentry returns NULL before dereferencing mntns-userns. This causes a NULL pointer dereference i...

EUVD-2025-36456

In the Linux kernel, the following vulnerability has been resolved: fanotify: Validate the return value of mntnsfromdentry before dereferencing The function dofanotifymark does not validate if mntnsfromdentry returns NULL before dereferencing mntns-userns. This causes a NULL pointer dereference i...

CVE-2025-40072 fanotify: Validate the return value of mnt_ns_from_dentry() before dereferencing

In the Linux kernel, the following vulnerability has been resolved: fanotify: Validate the return value of mntnsfromdentry before dereferencing The function dofanotifymark does not validate if mntnsfromdentry returns NULL before dereferencing mntns-userns. This causes a NULL pointer dereference i...

CVE-2025-40072

In the Linux kernel, the following vulnerability has been resolved: fanotify: Validate the return value of mntnsfromdentry before dereferencing The function dofanotifymark does not validate if mntnsfromdentry returns NULL before dereferencing mntns-userns. This causes a NULL pointer dereference i...

CVE-2025-40072: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: fanotify: Validate the return value of mntnsfromdentry before dereferencing The function dofanotifymark does not validate if mntnsfromdentry returns NULL before dereferencing mntns-userns. This causes a NULL pointer dereference i...

Linux Kernel Security Vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from an unvalidated mntnsfromdentry return value that could result in a null pointer dereference...