Memory Management Flaw in DPDK vhost Leading to Potential Host Crash and Memory Corruption
CVE-2026-86561

6.5MEDIUM

Key Information:

Vendor

Red Hat
Status
Fast Datapath For Rhel 10
Fast Datapath For Rhel 8
Fast Datapath For Rhel 9
Red Hat Enterprise Linux 10
Vendor
CVE Published:
14 October 2026

What is CVE-2026-86561?

A vulnerability has been identified in the DPDK vhost component where the system fails to validate the size of memory before invoking mmap during the setup of memory regions. This inadequacy can lead to significant risks, including potential crashes of the host or memory corruption. Proper validation mechanisms are essential to mitigate such risks and ensure secure operations within affected environments.

References

https://access.redhat.com/security/cve/CVE-2026-86561
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2529666
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Anthropic Research for reporting this issue.
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