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...

CVE-2026-68166

A flaw was found in the Linux kernel's userfaultfd mechanism. A local attacker with userfaultfd access could register on shadow stack Virtual Memory Areas VMAs. By discarding a page and injecting a page with chosen return addresses, an attacker could achieve arbitrary code execution. This...

CVE-2026-68265

A flaw was found in the Linux kernel. Specifically, within the drm/xe/vm module, an out-of-bounds access can occur when handling the DRMXECONSULTMEMADVISEPREFLOC region for a Buffer Object BO Virtual Memory Area VMA. This happens because a value of -1 is incorrectly used as an index into a memory...

Linux Distros Unpatched Vulnerability : CVE-2026-68265

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - drm/xe/vm: Fix BO prefetch with CONSULTMEMADVISEPREFLOC When prefetch region is DRMXECONSULTMEMADVISEPREFLOC for a BO VMA, the code used it as an index into...

CVE-2026-68166 userfaultfd: prevent registration of special VMAs

In the Linux kernel, the following vulnerability has been resolved: userfaultfd: prevent registration of special VMAs Vova Tokarev says: userfaultfd allows registration on shadow stack VMAs. With userfaultfd access, you can register on the shadow stack, discard a page ... and inject a page with...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: procfs: Avoid fetching the build ID while holding the VMA lock. Fix the PROCMAPQUERY to fetch the optional build ID only after releasing the mmaplock or the per-VMA lock, whichever was used to lock the VMA, to prevent deadlock...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: uacce: Implement mremap in uaccevmops to return -EPERM. The current uaccevmops does not support the mremap operation of vmoperationsstruct. Implement .mremap to return -EPERM to remind users. The reason we need to explicitly...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: drm/i915/gem: The zero-initialize of the eb.vma array in i915gemdoexecbuffer was fixed. The eb.vma array is initialized with values of 0 when the eb structure is first set up. Specifically, this sets the eb-vmai.vma pointers to...

Linux Distros Unpatched Vulnerability : CVE-2026-68166

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - userfaultfd: prevent registration of special VMAs Vova Tokarev says: userfaultfd allows registration on shadow stack VMAs. With userfaultfd access, you can...

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...

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...

SUSE CVE-2026-64592

In the Linux kernel, the following vulnerability has been resolved: riscv: mm: Unconditionally sfence.vma for spurious fault Svvptc does not guarantee that it's safe to just return here. Since we have already cleared our bit, if, theoretically, the bounded timeframe for the accessed page to becom...

CVE-2026-64592

In the Linux kernel, the following vulnerability has been resolved: riscv: mm: Unconditionally sfence.vma for spurious fault Svvptc does not guarantee that it's safe to just return here. Since we have already cleared our bit, if, theoretically, the bounded timeframe for the accessed page to becom...

CVE-2026-64592

CVE-2026-64592 affects the Linux kernel on riscv, in the memory management path handling spurious faults. The issue arises from unconditionally performing sfence.vma after a spurious fault, after the Svvptc path has cleared its bit; if the page becomes valid only after sret, a subsequent fault co...

CVE-2026-64582 RDMA/rxe: Fix a use-after-free problem in rxe_mmap

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix a use-after-free problem in rxemmap rxemmap removes a rxemmapinfo struct from the pendingmmaps list and releases pendinglock while the struct's kref is still at 1: listdelinit&ip-pendingmmaps;...

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...

The vulnerability of the i915_vma_pin_ww() function in the driver/gpu/drm/i915/i915_vma.c file of the Direct Rendering Infrastructure (DRI) kernel driver of the Linux operating system allows a hacker to cause a service failure.

The vulnerability of the i915vmapinww function in the drivers/gpu/drm/i915/i915vma.c file of the Direct Rendering Infrastructure DRI driver in the Linux operating system is related to the occurrence of mutual locking. Exploiting this vulnerability can allow an attacker to cause a service failure...

SUSE CVE-2026-53373

In the Linux kernel, the following vulnerability has been resolved: mm/vma: do not try to unmap a VMA if mmapprepare invoked from mmap The mmapprepare hook functionality includes the ability to invoke mmapprepare from the mmap hook of existing 'stacked' drivers, that is ones which are capable of...