Description
A vulnerability has been found in Radare2 5.9.9. This issue affects the function walk_exports_trie of the file libr/bin/format/mach0/mach0.c of the component Mach-O File Parser. Such manipulation leads to resource consumption. The attack can only be performed from a local environment. The exploit has been disclosed to the public and may be used. The existence of this vulnerability is still disputed at present. Upgrading to version 6.1.2 is capable of addressing this issue. The name of the patch is 4371ae84c99c46b48cb21badbbef06b30757aba0. You should upgrade the affected component. The code maintainer states that, "[he] wont consider this bug a DoS".
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Radare2 | 5.9.9 | 6.1.2 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | radare2 | No fix yet | — |
| Ubuntu 26.04 LTS | radare2 | No fix yet | — |
| Ubuntu 25.10 | radare2 | No fix yet | — |
| Ubuntu 16.04 LTS | radare2 | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | radare2 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | radare2 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | radare2 | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | radare2 | 6.2.2-bp160.1.1 | openSUSE-SU-2026:21988-1 |
Advisories 1
- openSUSE-SU-2026:21988-1 Security update for radare2 SUSE / openSUSE Security Updates · Oct 1, 2026
References
- VDB-351081 | Radare2 Mach-O File mach0.c walk_exports_trie resource consumption vdb-entry technical-description
- VDB-351081 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #769799 | radareorg Radare2 5.9.9 Denial of Service third-party-advisory
- https://github.com/radareorg/radare2/issues/25482 issue-tracking
- https://github.com/user-attachments/files/25620145/gen_macho_poc.py exploit
- https://github.com/ToddAWalter/radare2/commit/4371ae84c99c46b48cb21badbbef06b30757aba0 patch
- https://github.com/radareorg/radare2/milestone/94 patch