{"id":"CVE-2021-41229","state":"PUBLISHED","title":"Memory leak in BlueZ","description":"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.","publishedAt":"2021-11-12T00:00:00.000Z","updatedAt":"2025-11-04T16:09:18.907Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["bluez bluez"],"affected":[{"vendor":"bluez","product":"bluez","versions":[{"version":"= 5.58","status":"affected"}]}],"references":["https://github.com/bluez/bluez/security/advisories/GHSA-3fqg-r8j5-f5xq","https://lists.debian.org/debian-lts-announce/2021/11/msg00022.html","https://security.netapp.com/advisory/ntap-20211203-0004/","https://lists.debian.org/debian-lts-announce/2022/10/msg00026.html","https://lists.debian.org/debian-lts-announce/2024/09/msg00022.html"],"weaknesses":["CWE-400"],"ingestedAt":"2026-10-29T19:49:01.697Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/41xxx/CVE-2021-41229.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-41229","state":"PUBLISHED","datePublished":"2021-11-12T00:00:00.000Z","dateUpdated":"2025-11-04T16:09:18.907Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2021-09-15T00:00:00.000Z"},"containers":{"cna":{"title":"Memory leak in BlueZ","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"bluez","product":"bluez","versions":[{"version":"= 5.58","status":"affected"}]}],"references":[{"url":"https://github.com/bluez/bluez/security/advisories/GHSA-3fqg-r8j5-f5xq"},{"url":"https://lists.debian.org/debian-lts-announce/2021/11/msg00022.html","name":"[debian-lts-announce] 20211127 [SECURITY] [DLA 2827-1] bluez security update","tags":["mailing-list"]},{"url":"https://security.netapp.com/advisory/ntap-20211203-0004/"},{"url":"https://lists.debian.org/debian-lts-announce/2022/10/msg00026.html","name":"[debian-lts-announce] 20221024 [SECURITY] [DLA 3157-1] bluez security update","tags":["mailing-list"]}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW","baseScore":4.3,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","type":"CWE","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2022-10-24T00:00:00.000Z"},"source":{"advisory":"GHSA-3fqg-r8j5-f5xq","discovery":"UNKNOWN"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://github.com/bluez/bluez/security/advisories/GHSA-3fqg-r8j5-f5xq","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2021/11/msg00022.html","name":"[debian-lts-announce] 20211127 [SECURITY] [DLA 2827-1] bluez security update","tags":["mailing-list","x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20211203-0004/","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/10/msg00026.html","name":"[debian-lts-announce] 20221024 [SECURITY] [DLA 3157-1] bluez security update","tags":["mailing-list","x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/09/msg00022.html"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-04T16:09:18.907Z"}}]}}}