CVE-2026-81885

NameCVE-2026-81885
Descriptionradare2 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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1148820

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
radare2 (PTS)sid6.1.8+ds-1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
radare2source(unstable)(unfixed)1148820

Notes

https://github.com/radareorg/radare2/security/advisories/GHSA-43wr-4j49-rcxj
https://github.com/radareorg/radare2/issues/26225
https://github.com/radareorg/radare2/pull/26192
Fixed by: https://github.com/radareorg/radare2/commit/93d794caa7c2f08413106255d49546e544c1f9f0 (6.2.0)

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