CVE-2026-81880

radare2 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.

radare2 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.

radare2 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.

radare2 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.

radare2 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.

This update for radare2 fixes the following issues:

Changes in radare2:

• Update to version 6.2.2:

  • Analysis: new JNI plugin with typed interface tables, arm64 Swift float calling conventions, DWARF prototype linking, jump-table and switch-case fixes
  • Core: fix RAnalOp leaks in disasm/diff/debug loops, aoj memory use, partial-read handling, fp variable recovery
  • Bundle sdb 2.5.2 (upstream pin): rename shlib to libsdb2_5_2
  • Details can be found here: https://github.com/radareorg/radare2/releases/tag/6.2.2

• Security issues fixed:

  • CVE-2026-81886: Validate dmp64 page counts against dump size (boo#1282346).
  • CVE-2026-81885: Fix infinite loop in the NE fixup parser (boo#1282345).
  • CVE-2026-81884: Validate Mach-O LC_DATA_IN_CODE ranges (boo#1282344).
  • CVE-2026-81883: Fix Lua function parser OOB reads (boo#1282343).
  • CVE-2026-81882: Fix bplist Unicode string conversion (boo#1282342).
  • CVE-2026-81881: Fix Swift Mach-O field metadata bounds check (boo#1282341).
  • CVE-2026-81880: Decode PEF relocs lazily, add more bounds and overflow checks (boo#1282340).
  • CVE-2026-81879: Fix oobread in ELF PN_XNUM phdr count handling (boo#1282339).
  • CVE-2026-81878: Fix heap write overflow in Python loader (boo#1282338).
  • CVE-2026-14788: Denial of Service via use-after-free in r_core_bin_load function (boo#1270453).
  • CVE-2026-14761: Denial of service via integer overflow in string manipulation functions (boo#1270452).
  • CVE-2026-14760: Denial of Service via local use-after-free vulnerability (boo#1270450).
  • CVE-2026-14759: Denial of Service via heap-based buffer overflow (boo#1270449).
  • CVE-2026-14758: Denial of Service via integer overflow in hexpairs parser (boo#1270447).
  • CVE-2026-14757: Integer overflow allows local impact (boo#1270445).
  • CVE-2026-40527: Command injection vulnerability in the afsv/afsvj (boo#1262336).
  • CVE-2026-4174: Missing validation against an upper limit when allocating memory in the Mach-O file parser can lead to excessive resource consumption (boo#1259722).

• Security issue fixed with the previous release:

  • CVE-2026-41015: Configured on UNIX without SSL, allows command injection via a PDB name to rabin2 (boo#1262190).
  • CVE-2026-40517: Crafted PDB file with newline characters in symbol names can allow to inject arbitrary commands (boo#1262680).
  • CVE-2026-8695: UAFs in the gdb remote protocol ##crash (boo#1265403).