Radare2 Mach-O File mach0.c walk_exports_trie resource consumption
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-400.
Summary
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".
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Radare2 | 5.9.9 | 6.1.2 | Patch available | CNA |
- Radare2 Vendor— Affected 5.9.9 Fixed in 6.1.2 Patch available CNA
Remediation
- Fix · CNA Radare2 Fixed in 6.1.2
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-4174
- 2026-10-03 Alias added: GHSA-fwp9-q76v-g574
References
Sources
- CVE-2026-4174 · CVE Program
- CVE-2026-4174 · NVD
- FIRST EPSS
- GHSA-fwp9-q76v-g574 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-4174 · Red Hat security data · CC BY 4.0
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