K000163507: Linux kernel vulnerability CVE-2026-31787

Security Advisory Description In the Linux kernel, the following vulnerability has been resolved: xen/privcmd: fix double free via VMA splitting privcmdvmops defines .close privcmdclose, but neither .maysplit nor .open. When userspace does a partial munmap on a privcmd mapping, the kernel splits...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: xen/privcmd: fixed the double-free issue caused by VMA splitting privcmdvmops defines .close privcmdclose, but neither .maysplit nor .open. When the user space performs a partial munmap on a privcmd mapping, the kernel splits the...

kernel: xen/privcmd: fix double free via VMA splitting

A flaw was found in the Linux kernel's xen/privcmd module. A local user could exploit this by performing a partial unmapping of a privcmd memory region. This action causes a Virtual Memory Area VMA to split, leading to duplicated internal memory pointers. As a result, the same memory can be freed...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabilit...

kernel: xen/privcmd: fix double free via VMA splitting

A flaw was found in the Linux kernel's xen/privcmd module. A local user could exploit this by performing a partial unmapping of a privcmd memory region. This action causes a Virtual Memory Area VMA to split, leading to duplicated internal memory pointers. As a result, the same memory can be freed...

RHEL 9 : kernel (RHSA-2026:51603)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:51603 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: KVM: x86: Don't recheck L1...

kernel: xen/privcmd: fix double free via VMA splitting

A flaw was found in the Linux kernel's xen/privcmd module. A local user could exploit this by performing a partial unmapping of a privcmd memory region. This action causes a Virtual Memory Area VMA to split, leading to duplicated internal memory pointers. As a result, the same memory can be freed...

RHEL 9 : kernel (RHSA-2026:27789)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:27789 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: can: isotp: fix tx.buf...

kernel: xen/privcmd: fix double free via VMA splitting

A flaw was found in the Linux kernel's xen/privcmd module. A local user could exploit this by performing a partial unmapping of a privcmd memory region. This action causes a Virtual Memory Area VMA to split, leading to duplicated internal memory pointers. As a result, the same memory can be freed...

CVE-2026-31787 xen/privcmd: fix double free via VMA splitting

In the Linux kernel, the following vulnerability has been resolved: xen/privcmd: fix double free via VMA splitting privcmdvmops defines .close privcmdclose, but neither .maysplit nor .open. When userspace does a partial munmap on a privcmd mapping, the kernel splits the VMA via splitvma. Since...

CVE-2026-31787

In the Linux kernel, the following vulnerability has been resolved: xen/privcmd: fix double free via VMA splitting privcmdvmops defines .close privcmdclose, but neither .maysplit nor .open. When userspace does a partial munmap on a privcmd mapping, the kernel splits the VMA via splitvma. Since...

EUVD-2026-26365

In the Linux kernel, the following vulnerability has been resolved: xen/privcmd: fix double free via VMA splitting privcmdvmops defines .close privcmdclose, but neither .maysplit nor .open. When userspace does a partial munmap on a privcmd mapping, the kernel splits the VMA via splitvma. Since...

CVE-2026-31787: Double Free

In the Linux kernel, the following vulnerability has been resolved: xen/privcmd: fix double free via VMA splitting privcmdvmops defines .close privcmdclose, but neither .maysplit nor .open. When userspace does a partial munmap on a privcmd mapping, the kernel splits the VMA via splitvma. Since...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-010890)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-010890 advisory. In the Linux kernel, the following vulnerability has been resolved: xen/gntdev: Accommodate VMA splitting Prior to this commit, the gntdev driver code did not handle...

SUSE CVE-2022-50471

In the Linux kernel, the following vulnerability has been resolved: xen/gntdev: Accommodate VMA splitting Prior to this commit, the gntdev driver code did not handle the following scenario correctly with paravirtualized PV Xen domains: User process sets up a gntdev mapping composed of two grant...

UBUNTU-CVE-2022-50471

In the Linux kernel, the following vulnerability has been resolved: xen/gntdev: Accommodate VMA splitting Prior to this commit, the gntdev driver code did not handle the following scenario correctly with paravirtualized PV Xen domains: User process sets up a gntdev mapping composed of two grant...

CVE-2022-50471 xen/gntdev: Accommodate VMA splitting

In the Linux kernel, the following vulnerability has been resolved: xen/gntdev: Accommodate VMA splitting Prior to this commit, the gntdev driver code did not handle the following scenario correctly with paravirtualized PV Xen domains: User process sets up a gntdev mapping composed of two grant...

CVE-2022-50471 xen/gntdev: Accommodate VMA splitting

In the Linux kernel, the following vulnerability has been resolved: xen/gntdev: Accommodate VMA splitting Prior to this commit, the gntdev driver code did not handle the following scenario correctly with paravirtualized PV Xen domains: User process sets up a gntdev mapping composed of two grant...

PT-2025-40658

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The gntdev driver in the Linux kernel did not correctly handle scenarios involving paravirtualized PV Xen domains and Virtual Memory Area VMA splitting. Specifically, the issue occurred...

Linux kernel 安全漏洞

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 a failure to prevent VMA splitting, which could lead to a reference count leak...