23 Oct 2026 15:48:27 UTC
radare2: Out-of-bounds Read at the end of string in the LUA 5.3 bytecode
cve-program · CVE-2026-81883 · Published
CVE-2026-81883
radare2: Out-of-bounds Read at the end of string in the LUA 5.3 bytecode
CVSS 3.1 3.3 LOWCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-81883
Publishedradare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Lua 5.3 bytecode function parser was vulnerable because the Lua 5.3 bytecode function parser read fixed function-metadata fields immediately after a function-name string without checking the remaining buffer length. The vulnerability is triggered by opening or inspecting a crafted Lua 5.3 bytecode file whose function-name string ends at the input-buffer boundary. The parser read two integers and three one-byte fields beyond the allocated input buffer. This can cause invalid parser results or process termination; no attacker-observable memory disclosure has been demonstrated. This issue is fixed in version 6.2.0.
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