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Medium · 5.5 CVE-2026-124746 EUVD-2026-123546GHSA-c279-x2f5-7rgj

Busybox: out-of-bounds read in volume_id_get_buffer() via an offset+length wraparound

Published Nov 11, 2026 · Updated Nov 13, 2026 · Assigned by redhat

Description

A flaw was found in BusyBox. An integer overflow occurs in the volume_id component when calculating buffer boundaries while probing filesystem metadata. An attacker can exploit this vulnerability by providing a specially crafted filesystem image on an attached storage device. When probed by utilities such as blkid, findfs, or mount, the application crashes, resulting in a Denial of Service (DoS) that prevents the system from resolving or mounting storage devices.

Affected products

VendorProductAffectedFixed
Red Hat Red Hat Enterprise Linux 6 — —
Red Hat Red Hat Hardened Images — —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Ubuntu 26.10 busybox No fix yet —
Ubuntu 26.04 LTS busybox No fix yet —
Ubuntu 24.04 LTS busybox No fix yet —
Ubuntu 22.04 LTS busybox No fix yet —
Ubuntu 20.04 LTS busybox No fix yet —
Show 3 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 18.04 LTS busybox No fix yet —
Ubuntu Pro 16.04 LTS busybox No fix yet —
Ubuntu Pro 14.04 LTS busybox No fix yet —

Advisories 1

References