Nixpkgs security tracker

Login with GitHub

Suggestion detail

Untriaged
Permalink CVE-2026-42492
7.5 HIGH
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): None (N)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): High (H)
created 1 week ago Activity log
  • Created suggestion 1 week ago
vIRQ event channel binding may break Xenstore

Xenstore, to have an up-to-date picture of the entire system, wants to know of domains appearing and disappearing. To make this more robust, a new XEN_DOMCTL_get_domain_state was introduced. The management of the bitmap underlying that operation is tied into the binding of the VIRQ_DOM_EXC virtual IRQ. Unfortunately an error path there would tear down the bitmap even in cases when it wasn't set up. Unprivileged domains can trigger that error path.

Affected products

Xen
  • ==consult Xen advisory XSA-496

Matching in nixpkgs

pkgs.xen

Type-1 hypervisor intended for embedded and hyperscale use cases

pkgs.xenon

Monitoring tool based on radon

pkgs.hhexen

Linux port of Raven Game's Hexen

pkgs.uhexen2

Cross-platform port of Hexen II game

pkgs.xenomapper

Utility for post processing mapped reads that have been aligned to a primary genome and a secondary genome and binning reads into species specific, multimapping in each species, unmapped and unassigned bins

pkgs.nxengine-evo

Complete open-source clone/rewrite of the masterpiece jump-and-run platformer Doukutsu Monogatari (also known as Cave Story)

pkgs.grub2_pvgrub_image

PvGrub2 image for booting PV Xen guests

  • nixos-unstable -
    • nixpkgs-unstable
    • nixos-unstable-small
  • nixos-26.05 -
    • nixos-26.05-small
    • nixpkgs-26.05-darwin

pkgs.grub2_pvhgrub_image

PvGrub2 image for booting PVH Xen guests

  • nixos-unstable -
    • nixpkgs-unstable
    • nixos-unstable-small
  • nixos-26.05 -
    • nixos-26.05-small
    • nixpkgs-26.05-darwin

pkgs.haskellPackages.xeno

A fast event-based XML parser in pure Haskell

  • nixos-unstable 0.6
    • nixpkgs-unstable 0.6
    • nixos-unstable-small 0.6
  • nixos-26.05 0.6
    • nixos-26.05-small 0.6
    • nixpkgs-26.05-darwin 0.6