Use-after-free in radare2 - #VU165347
Published: November 11, 2026
Vulnerability identifier: #VU165347
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service by crashing the radare2 process.
The vulnerability exists due to use-after-free followed by double free in radare2 core reinitialization when the oc command leaves RCore.lib pointing to a freed library manager and initialization skips replacing it. A remote attacker can persuade a victim to run oc twice in one session, for example using oc -;oc - in a script, to trigger repeated freeing of the same object and crash the process.
Affected software
radare2
Remediation
Install security update from vendor's website.
radare2 - update to 6.2.0