CVE-2026-81885
mediumradare2 is a UNIX-like reverse engineering framework and command-line toolset.
Vendor / product: Radare — radare2
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.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Affected products
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://github.com/radareorg/radare2/commit/93d794caa7c2f08413106255d49546e544c1f9f0 security-advisories@github.com
- https://github.com/radareorg/radare2/issues/26225 security-advisories@github.com
- https://github.com/radareorg/radare2/pull/26192 security-advisories@github.com
- https://github.com/radareorg/radare2/releases/tag/6.2.0 security-advisories@github.com
- https://github.com/radareorg/radare2/security/advisories/GHSA-43wr-4j49-rcxj security-advisories@github.com
- https://github.com/radareorg/radare2/issues/26225 134c704f-9b21-4f2e-91b3-4a467353bcc0