CVE-2026-68166

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...

EUVD-2026-55552

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...

CVE-2026-68166

The CVE-2026-68166 issue in the Linux kernel is addressed by restricting userfaultfd registrations. The fix updates vma_can_userfault() to reject VM_SHADOW_STACK and VM_SPECIAL so that drivers implementing vm_uffd_ops cannot register special VMAs with userfaultfd. VM_SPECIAL’s inclusion of VM_DON...

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 vulnerability has been resolved: Tracing: The WARNON message in tracingbuffersmmapclose has been fixed for split VMA cases. When a VMA is split e.g., through partial munmap or MAPFIXED, the kernel calls vmops-close on each portion of the VMA. For trace buffer...

CVE-2026-53201

CVE-2026-53201 affects the Linux kernel, with multiple sources (NVD, OSV, Debian security tracker, Ubuntu, etc.) describing a fix that reverts a prior optimization. The issue arises because the idle-skip optimization in the DRM/xe path can bypass GuC suspend, potentially skipping the context-swit...

OESA-2026-2417 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved:mm/mempolicy: fix migratetonode assuming there is at least one VMA in a MMWe currently assume that there is at least one VMA in a MM, which isn ttrue.So we might...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: mm/mseal: The end of the current VMA was correctly updated during merging. Previously, we stored the end of the current VMA in currend. When moving to the next VMA, we updated currstart to currend to proceed to the next VMA...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: xen/gntdev: Accommodation for VMA splitting Prior to this commit, the gntdev driver code did not handle the following scenario correctly with paravirtualized PV Xen domains: The user process sets up a gntdev mapping consisting of...

Astra Linux – Vulnerability in Linux

A issue was discovered in Linux: improper handling of VMIO|VMPFNMAP vmas in KVM can bypass RO checks and may cause pages to be freed while still accessible by the VMM and guest. This allows users who have the ability to start and control a VM to read/write random pages of memory, potentially...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: mm: fixed a UAF Use-After-Free issue when vma-mm is freed after vma-vmrefcnt has been dropped. By introducing delays in the appropriate places, Jann Horn created a scenario where a UAF issue could occur—a problem that became...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

A issue was discovered in include/asm-generic/tlb.h in the Linux kernel before version 5.19. Due to a race condition between unmapmappingrange and munmap, a device driver can free a page while it still has stale TLB entries. This only occurs in situations involving VMPFNMAP VMAs...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-021536)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021536 advisory. In the Linux kernel, the following vulnerability has been resolved: mm: /proc/pid/smapsrollup: fix no vma's null-deref Commit 258f669e7e88 mm: /proc/pid/smapsrollup:...

CVE-2026-31785

In the Linux kernel, the following vulnerability has been resolved: drm/xe/xepagefault: Disallow writes to read-only VMAs The page fault handler should reject write/atomic access to read only VMAs. Add code to handle this in xepagefaultservice after the VMA lookup. v2: - Apply max line length...

CVE-2026-31785 drm/xe/xe_pagefault: Disallow writes to read-only VMAs

In the Linux kernel, the following vulnerability has been resolved: drm/xe/xepagefault: Disallow writes to read-only VMAs The page fault handler should reject write/atomic access to read only VMAs. Add code to handle this in xepagefaultservice after the VMA lookup. v2: - Apply max line length...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013814)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013814 advisory. In the Linux kernel, the following vulnerability has been resolved: mm: /proc/pid/smapsrollup: fix no vma's null-deref Commit 258f669e7e88 mm: /proc/pid/smapsrollup:...

PT-2026-34384

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the drm/xe component where the system fails to maintain proper tracking of remap prev/next during 3D workloads. This occurs when a rebind is performed in the middle of...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-013391)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013391 advisory. In the Linux kernel, the following vulnerability has been resolved: mm: /proc/pid/smapsrollup: fix no vma's null-deref Commit 258f669e7e88 mm: /proc/pid/smapsrollup:...

CVE-2026-31390

In the Linux kernel, the following vulnerability has been resolved: drm/xe: Fix memory leak in xevmmadviseioctl When checkboargsaresane validation fails, jump to the new freevmas cleanup label to properly free the allocated resources. This ensures proper cleanup in this error path. cherry picked...

PT-2026-30173

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory leak in the xe vm madvise ioctl function within the drm/xe subsystem of the Linux kernel has been addressed. The issue occurs when validation within check bo args are sane fails...