Nixpkgs Security Tracker

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Suggestion detail

Untriaged
Permalink CVE-2026-23555
7.1 HIGH
  • CVSS version: 3.1
  • Attack vector (AV): LOCAL
  • Attack complexity (AC): LOW
  • Privileges required (PR): NONE
  • User interaction (UI): NONE
  • Scope (S): CHANGED
  • Confidentiality impact (C): NONE
  • Integrity impact (I): NONE
  • Availability impact (A): HIGH
created 5 days, 17 hours ago
Xenstored DoS by unprivileged domain

Any guest issuing a Xenstore command accessing a node using the (illegal) node path "/local/domain/", will crash xenstored due to a clobbered error indicator in xenstored when verifying the node path. Note that the crash is forced via a failing assert() statement in xenstored. In case xenstored is being built with NDEBUG #defined, an unprivileged guest trying to access the node path "/local/domain/" will result in it no longer being serviced by xenstored, other guests (including dom0) will still be serviced, but xenstored will use up all cpu time it can get.

References

Affected products

Xen
  • ==consult Xen advisory XSA-481

Matching in nixpkgs

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.grub2_pvgrub_image

PvGrub2 image for booting PV Xen guests

  • nixos-unstable -
    • nixpkgs-unstable
    • nixos-unstable-small
  • nixos-25.11 -
    • nixos-25.11-small
    • nixpkgs-25.11-darwin

pkgs.grub2_pvhgrub_image

PvGrub2 image for booting PVH Xen guests

  • nixos-unstable -
    • nixpkgs-unstable
    • nixos-unstable-small
  • nixos-25.11 -
    • nixos-25.11-small
    • nixpkgs-25.11-darwin

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