The vulnerability of the build_polexpire() function in the net/xfrm/xfrm_user.c module, which is part of the networking functions of the Linux kernel, allows a hacker to cause a service failure.

The vulnerability of the buildpolexpire function in the net/xfrm/xfrmuser.c module, which is part of the networking functions in the Linux kernel, relates to the use of uninitialized resources. Exploiting this vulnerability could allow an attacker to cause a service failure...

Linux Distros Unpatched Vulnerability : CVE-2026-31664

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - xfrm: clear trailing padding in buildpolexpire buildexpire clears the trailing padding bytes of struct xfrmuserexpire after setting the hard field via...

CVE-2026-31664

The CVE-2026-31664 issue resides in the Linux kernel xfrm subsystem: build_polexpire() fails to clear trailing padding in struct xfrm_user_polexpire, leaving uninitialized heap bytes that are sent to userspace via netlink multicast (XFRMNLGRP_EXPIRE). The consequence is potential leakage of kerne...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from unremoved trailing padding in the buildpolexpire function. This vulnerability may lead to a kerne...

CVE-2026-31664: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: xfrm: clear trailing padding in buildpolexpire buildexpire clears the trailing padding bytes of struct xfrmuserexpire after setting the hard field via memsetafter, but the analogous function buildpolexpire does not do this for...