Critical
radare2 — security advisory
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.
- Products
- radare2
- Affected versions
- 0.9.6-3.1ubuntu1, 1.6.0+dfsg-1, 2.0.0+dfsg-1, 2.1.0+dfsg-1, 2.3.0+dfsg-1, 2.3.0+dfsg-2, 2.3.0+dfsg-2ubuntu0.1~esm1, 3.2.1+dfsg-5build1, 4.0.0+dfsg-1, 4.2.1+dfsg-1, 4.2.1+dfsg-2, 4.2.1+dfsg-2ubuntu0.1~esm1, 5.5.0+dfsg-1.1ubuntu2, 5.5.0+dfsg-1.1ubuntu3, 5.5.0+dfsg-1.1ubuntu3+esm1, 5.5.0+dfsg-1ubuntu1, 5.9.8+dfsg-2, 5.9.8+dfsg-2ubuntu0.25.10.1, 5.9.8+dfsg-2ubuntu0.25.10.2, 6.0.4+dfsg-1, 6.0.7+ds-1, 6.1.6+ds-2, 6.1.6+ds-3, 6.1.8+ds-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-8695
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:24 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-8695
radare2
Fixed versions: Not specified
radare2
Fixed versions: Not specified
radare2
Fixed versions: Not specified
radare2
Fixed versions: Not specified
radare2
Fixed versions: Not specified
radare2
Fixed versions: Not specified
radare2
Fixed versions: Not specified
Complete source record
{
"id": "e029622565583a0f3cd33bb5dacdd365cf8e7a63868e871979758e2d3f7d0065",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-8695",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-8695",
"summary": "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.",
"evidence": "osv:UBUNTU-CVE-2026-8695",
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{
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],
"modified": "2026-10-17T13:01:14.367019152Z",
"provider": "osv",
"upstream": [
"CVE-2026-8695"
],
"references": [
"https://ubuntu.com/security/CVE-2026-8695",
"https://www.cve.org/CVERecord?id=CVE-2026-8695",
"https://github.com/radareorg/radare2/issues/25835",
"https://github.com/radareorg/radare2/issues/25836",
"https://github.com/radareorg/radare2/commit/c213ad6894a1eb9086ac8bf5fae35757e9e1683c",
"https://www.vulncheck.com/advisories/radare2-use-after-free-via-gdbr-threads-list"
]
},
"related_cves": [
{
"value": "CVE-2026-8695",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 361348,
"published_at": "2026-05-15T17:16:00+00:00"
}