Bug 2477954 (CVE-2026-8695)

Summary: CVE-2026-8695 radare2: radare2: Use-after-free in GDB remote debugging can lead to code execution or denial of service.
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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Priority: urgent    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in radare2. A remote attacker can exploit a use-after-free vulnerability in the `gdbr_threads_list()` function by sending a specific sequence of GDB remote debugging responses. This can lead to memory corruption, potentially allowing for arbitrary code execution or causing a denial of service.
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Description OSIDB Bzimport 2026-05-15 18:01:37 UTC 
radare2 6.1.5 contains a use-after-free vulnerability in the gdbr_threads_list() function that allows remote attackers to trigger memory corruption by sending a valid qfThreadInfo response followed by a malformed qsThreadInfo response. Attackers can exploit this vulnerability through GDB remote debugging to cause a denial of service or potentially achieve code execution by manipulating thread list processing.