Denial of Service Vulnerability in BusyBox Affects Filesystem Management
CVE-2026-124743

5.5MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 6
Red Hat Hardened Images
Vendor
CVE Published:
11 November 2026

What is CVE-2026-124743?

A flaw has been identified in BusyBox that affects the processing of filesystem metadata specifically in HFS+ filesystems. The volume identification component fails to validate header values correctly, which can be exploited by an attacker. By attaching a malicious storage device or supplying a specially crafted filesystem image, the attacker can provoke an application crash. This results in a denial of service (DoS), obstructing device resolution and causing operational disruptions.

References

https://access.redhat.com/security/cve/CVE-2026-124743
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2571624
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank ducanhluu for reporting this issue.
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