{"id":"UBUNTU-CVE-2026-8696","details":"radare2 6.1.5 contains a use-after-free vulnerability in the gdbr_pids_list() function within the GDB client core that allows remote attackers to cause a denial of service or potentially execute arbitrary code by sending malformed thread information responses. Attackers can trigger the vulnerability by causing qsThreadInfo to fail after qfThreadInfo successfully allocates RDebugPid structures, resulting in double-free memory corruption when the error path attempts to clean up the list.","modified":"2026-05-20T22:03:09.870605621Z","published":"2026-05-15T21:16:00Z","upstream":["CVE-2026-8696"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-8696"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-8696"},{"type":"REPORT","url":"https://github.com/radareorg/radare2/issues/25836"},{"type":"REPORT","url":"https://github.com/radareorg/radare2/commit/c213ad6894a1eb9086ac8bf5fae35757e9e1683c"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/radare2-use-after-free-via-gdbr-pids-list"}],"affected":[{"package":{"name":"radare2","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/radare2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.6-3.1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"libradare2-0.9.6","binary_version":"0.9.6-3.1ubuntu1"},{"binary_name":"libradare2-common","binary_version":"0.9.6-3.1ubuntu1"},{"binary_version":"0.9.6-3.1ubuntu1","binary_name":"radare2"},{"binary_name":"radare2-plugins","binary_version":"0.9.6-3.1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8696.json"}},{"package":{"name":"radare2","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/radare2?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["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"],"ecosystem_specific":{"binaries":[{"binary_name":"libradare2-2.3","binary_version":"2.3.0+dfsg-2ubuntu0.1~esm1"},{"binary_name":"libradare2-common","binary_version":"2.3.0+dfsg-2ubuntu0.1~esm1"},{"binary_name":"radare2","binary_version":"2.3.0+dfsg-2ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8696.json"}},{"package":{"name":"radare2","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/radare2?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["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"],"ecosystem_specific":{"binaries":[{"binary_version":"4.2.1+dfsg-2ubuntu0.1~esm1","binary_name":"libradare2-4.2.1"},{"binary_version":"4.2.1+dfsg-2ubuntu0.1~esm1","binary_name":"libradare2-common"},{"binary_name":"radare2","binary_version":"4.2.1+dfsg-2ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8696.json"}},{"package":{"name":"radare2","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/radare2?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.5.0+dfsg-1ubuntu1","5.5.0+dfsg-1.1ubuntu2","5.5.0+dfsg-1.1ubuntu3","5.5.0+dfsg-1.1ubuntu3+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libradare2-5.0.0t64","binary_version":"5.5.0+dfsg-1.1ubuntu3+esm1"},{"binary_name":"libradare2-common","binary_version":"5.5.0+dfsg-1.1ubuntu3+esm1"},{"binary_name":"radare2","binary_version":"5.5.0+dfsg-1.1ubuntu3+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8696.json"}},{"package":{"name":"radare2","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/radare2?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.9.8+dfsg-2","5.9.8+dfsg-2ubuntu0.25.10.1","5.9.8+dfsg-2ubuntu0.25.10.2"],"ecosystem_specific":{"binaries":[{"binary_version":"5.9.8+dfsg-2ubuntu0.25.10.2","binary_name":"libradare2-5.0.0t64"},{"binary_version":"5.9.8+dfsg-2ubuntu0.25.10.2","binary_name":"libradare2-common"},{"binary_name":"radare2","binary_version":"5.9.8+dfsg-2ubuntu0.25.10.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8696.json"}},{"package":{"name":"radare2","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/radare2?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.9.8+dfsg-2","6.0.4+dfsg-1","6.0.7+ds-1"],"ecosystem_specific":{"binaries":[{"binary_version":"6.0.7+ds-1","binary_name":"libradare2-6.0.0t64"},{"binary_version":"6.0.7+ds-1","binary_name":"libradare2-common"},{"binary_version":"6.0.7+ds-1","binary_name":"radare2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8696.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}