{"id":"UBUNTU-CVE-2021-41229","details":"BlueZ is a Bluetooth protocol stack for Linux. In affected versions a vulnerability exists in sdp_cstate_alloc_buf which allocates memory which will always be hung in the singly linked list of cstates and will not be freed. This will cause a memory leak over time. The data can be a very large object, which can be caused by an attacker continuously sending sdp packets and this may cause the service of the target device to crash.","modified":"2026-04-22T13:00:41.782001Z","published":"2021-11-12T23:15:00Z","related":["USN-5155-1"],"upstream":["CVE-2021-41229"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-41229"},{"type":"REPORT","url":"https://github.com/bluez/bluez/security/advisories/GHSA-3fqg-r8j5-f5xq"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5155-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-41229"}],"affected":[{"package":{"name":"bluez","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/bluez@5.37-0ubuntu5.3+esm5?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.35-0ubuntu2","5.36-0ubuntu1","5.37-0ubuntu5","5.37-0ubuntu5.1","5.37-0ubuntu5.3","5.37-0ubuntu5.3+esm1","5.37-0ubuntu5.3+esm2","5.37-0ubuntu5.3+esm3","5.37-0ubuntu5.3+esm4","5.37-0ubuntu5.3+esm5"],"ecosystem_specific":{"binaries":[{"binary_name":"bluetooth","binary_version":"5.37-0ubuntu5.3+esm5"},{"binary_name":"bluez","binary_version":"5.37-0ubuntu5.3+esm5"},{"binary_name":"bluez-cups","binary_version":"5.37-0ubuntu5.3+esm5"},{"binary_name":"bluez-hcidump","binary_version":"5.37-0ubuntu5.3+esm5"},{"binary_name":"bluez-obexd","binary_version":"5.37-0ubuntu5.3+esm5"},{"binary_name":"bluez-tests","binary_version":"5.37-0ubuntu5.3+esm5"},{"binary_name":"libbluetooth3","binary_version":"5.37-0ubuntu5.3+esm5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-41229.json"}},{"package":{"name":"bluez","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/bluez@5.48-0ubuntu3.6?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.48-0ubuntu3.6"}]}],"versions":["5.46-0ubuntu3","5.46-0ubuntu4","5.48-0ubuntu3","5.48-0ubuntu3.1","5.48-0ubuntu3.2","5.48-0ubuntu3.3","5.48-0ubuntu3.4","5.48-0ubuntu3.5"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"bluetooth","binary_version":"5.48-0ubuntu3.6"},{"binary_name":"bluez","binary_version":"5.48-0ubuntu3.6"},{"binary_name":"bluez-cups","binary_version":"5.48-0ubuntu3.6"},{"binary_name":"bluez-hcidump","binary_version":"5.48-0ubuntu3.6"},{"binary_name":"bluez-obexd","binary_version":"5.48-0ubuntu3.6"},{"binary_version":"5.48-0ubuntu3.6","binary_name":"bluez-tests"},{"binary_name":"libbluetooth3","binary_version":"5.48-0ubuntu3.6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-41229.json"}},{"package":{"name":"bluez","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/bluez@5.53-0ubuntu3.4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.53-0ubuntu3.4"}]}],"versions":["5.50-0ubuntu4","5.51-0ubuntu1","5.51-0ubuntu2","5.52-0ubuntu1","5.52-0ubuntu2","5.53-0ubuntu1","5.53-0ubuntu2","5.53-0ubuntu3","5.53-0ubuntu3.1","5.53-0ubuntu3.2","5.53-0ubuntu3.3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"bluetooth","binary_version":"5.53-0ubuntu3.4"},{"binary_name":"bluez","binary_version":"5.53-0ubuntu3.4"},{"binary_version":"5.53-0ubuntu3.4","binary_name":"bluez-cups"},{"binary_name":"bluez-hcidump","binary_version":"5.53-0ubuntu3.4"},{"binary_name":"bluez-obexd","binary_version":"5.53-0ubuntu3.4"},{"binary_name":"bluez-tests","binary_version":"5.53-0ubuntu3.4"},{"binary_name":"libbluetooth3","binary_version":"5.53-0ubuntu3.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-41229.json"}},{"package":{"name":"bluez","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/bluez@5.62-0ubuntu2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.62-0ubuntu2"}]}],"versions":["5.60-0ubuntu2","5.62-0ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"bluetooth","binary_version":"5.62-0ubuntu2"},{"binary_name":"bluez","binary_version":"5.62-0ubuntu2"},{"binary_name":"bluez-cups","binary_version":"5.62-0ubuntu2"},{"binary_name":"bluez-hcidump","binary_version":"5.62-0ubuntu2"},{"binary_name":"bluez-meshd","binary_version":"5.62-0ubuntu2"},{"binary_name":"bluez-obexd","binary_version":"5.62-0ubuntu2"},{"binary_name":"bluez-tests","binary_version":"5.62-0ubuntu2"},{"binary_name":"libbluetooth3","binary_version":"5.62-0ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-41229.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}