CVE-2026-19617

Summary

A flaw was found in libdm. A local attacker could craft a malicious Logical Volume Manager (LVM) metadata configuration with deeply nested structures. This could lead to uncontrolled recursion in the libdm configuration file parser, exhausting the stack and causing any LVM command reading the metadata to crash. This vulnerability results in a Denial of Service (DoS) for affected systems.

Affected Software

Weaknesses

• CWE-770: Allocation of Resources Without Limits or Throttling

Workarounds

Avoid importing LVM physical volumes from untrusted sources without first inspecting the metadata. Systems using LVM on shared or externally-attached storage should ensure that only trusted administrators can write to the underlying block devices.

ADP Enrichment

CISA ADP Vulnrichment

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

References

• https://access.redhat.com/security/cve/CVE-2026-19617
• https://bugzilla.redhat.com/show_bug.cgi?id=2514626

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