CVE-2026-88838 (GCVE-0-2026-88838)

Vulnerability from cvelistv5 – Published: 2026-10-13 16:56 – Updated: 2026-10-13 16:56
VLAI
Title
Busybox: busybox: non-root mount option filter bypass allows clearing fstab security restrictions
Summary
A flaw was found in BusyBox's mount utility. A non-root user can bypass mount security restrictions set in /etc/fstab by specifying clearing-mask options on the command line. These options pass the non-root flag filter and are merged with fstab options as strings; when the combined options are re-parsed, clearing options can override nosuid, nodev, and noexec protections the administrator intended to enforce.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-693 - Protection Mechanism Failure
Assigner
redhat CNA under the redhat root
CNA scorecard B 81/100 over 987 records in the last 180 days details
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-88838 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2531352 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
Create a notification for this product.
Date Public
2026-10-13 13:50
Credits
Red Hat would like to thank Shubham Raj (Causal Security) for reporting this issue.
Show details on NVD website
To clipboard 

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