CVEvulnerability
CVE-2026-81885
5.5 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-09-22
- Last modified
- 2026-09-28
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-770, CWE-835
Description
radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's NE relocation fixup-chain parser was vulnerable because the NE relocation parser followed fixup chains without an active iteration limit or cycle detection. The vulnerability is triggered by opening a crafted NE executable whose in-bounds relocation entry points back to itself instead of reaching 0xffff. The parser repeatedly processed the same relocation and allocated another relocation object on each iteration. This can cause denial of service through continuous CPU and memory consumption. This issue is fixed in version 6.2.0.
Affected configurations
• radare radare2 (< 6.2.0)
Related
References
- https://github.com/radareorg/radare2/commit/93d794caa7c2f08413106255d49546e544c1f9f0 Patch
- https://github.com/radareorg/radare2/issues/26225 Exploit, Issue Tracking, Mitigation, Vendor Advisory
- https://github.com/radareorg/radare2/pull/26192 Patch
- https://github.com/radareorg/radare2/releases/tag/6.2.0 Release Notes
- https://github.com/radareorg/radare2/security/advisories/GHSA-43wr-4j49-rcxj Patch, Vendor Advisory
- https://github.com/radareorg/radare2/issues/26225 Exploit, Issue Tracking, Mitigation, Vendor Advisory