Bug 2571675 (CVE-2026-124746)

Summary: CVE-2026-124746 busybox: Out-of-bounds read in volume_id_get_buffer() via an offset+length wraparound
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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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.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2571676, 2571677    
Bug Blocks:    

Description OSIDB Bzimport 2026-11-11 12:25:22 UTC
A flaw was found in BusyBox's volume_id. In volume_id_get_buffer(), a 64-bit offset+length addition can wrap past 2^64, passing the buffer size check and returning a pointer far outside the buffer, which the NTFS prober dereferences, causing a SIGSEGV crash. A crafted filesystem image on an attached device triggers this when probed by blkid, findfs or mount LABEL=/UUID=, preventing those applets from resolving any device.