radare2: Uncontrolled resource consumption in radare2 PEF loader

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-81880
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-22 16:18:02 UTC
Updated2026-09-22 16:18:02 UTC
Descriptionradare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Apple Preferred Executable Format loader was vulnerable because the PEF loader accepted relocSecCount values that were not bounded by the number of sections or complete relocation records in the input. The vulnerability is triggered by normal binary-format auto-detection of a small crafted Apple PEF file. The loader could perform up to 268,435,456 relocation-section iterations and repeated buffer operations after record offsets passed the end of the file. This can cause denial of service through excessive CPU consumption and prolonged processing. This issue is fixed in version 6.2.0.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Problem Types: CWE-400 | CWE-834 | CWE-400 CWE-400: Uncontrolled Resource Consumption | CWE-834 CWE-834: Excessive Iteration

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
3.1CNADECLARED5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Radareorg Radare2 affected < 6.2.0 Not specified

References

ReferenceSourceLinkTags
github.com/radareorg/radare2/security/advisories/GHSA-fg6f-rj8g-25pq [email protected] github.com
github.com/radareorg/radare2/releases/tag/6.2.0 [email protected] github.com
github.com/radareorg/radare2/commit/87c780e29ee6251cebaab51585d14482cb77... [email protected] github.com
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