CVE-2026-26103

Summary

A flaw was found in the udisks storage management daemon that exposes a privileged D-Bus API for restoring LUKS encryption headers without proper authorization checks. The issue allows a local unprivileged user to instruct the root-owned udisks daemon to overwrite encryption metadata on block devices. This can permanently invalidate encryption keys and render encrypted volumes inaccessible. Successful exploitation results in a denial-of-service condition through irreversible data loss.

Affected Software

VendorProductVersion RangeStatus
Red HatRed Hat Enterprise Linux 100:2.10.90-6.el10_1.1 < *unaffected
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support0:2.10.90-5.el10_0.2 < *unaffected

Weaknesses

  • CWE-862: Missing Authorization

Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to a widespread installation base, or stability.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

udisks: Missing Authorization Check Allows Unprivileged Users to Restore LUKS Headers via udisks D-Bus API

Additional References

References