{"id":"CVE-2021-43400","aliases":["DEBIAN-CVE-2021-43400","DLA-3157-1","DLA-3879-1","EUVD-2021-30335","GHSA-xgf8-98pj-cm5c","MGASA-2021-0532","OESA-2022-1527","OESA-2022-2047","SUSE-SU-2022:3687-1","SUSE-SU-2022:3691-1","SUSE-SU-2022:3981-1","UBUNTU-CVE-2021-43400","USN-5155-1"],"status":"published","title":"An issue was discovered in gatt-database.c in BlueZ 5.61. A use-after-free can occur when a...","description":"An issue was discovered in gatt-database.c in BlueZ 5.61. 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List","Patch","Third Party Advisory","fix"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/10/msg00026.html","tags":["mailing-list","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/09/msg00022.html","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43400","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-xgf8-98pj-cm5c"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-43400","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2021-0532.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=29694","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5155-1","tags":["advisory"]},{"url":"https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1527","tags":["advisory"]},{"url":"https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-2047","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-0129","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2022/suse-su-20223687-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1186463","tags":["report"]},{"url":"https://bugzilla.suse.com/1188859","tags":["report"]},{"url":"https://bugzilla.suse.com/1192394","tags":["report"]},{"url":"https://bugzilla.suse.com/1193227","tags":["report"]},{"url":"https://bugzilla.suse.com/1193237","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2019-8921","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-8922","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-26558","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-0129","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-3658","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-43400","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2022/suse-su-20223691-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2022/suse-su-20223981-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-43400","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-43400","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-3658","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-41229","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-43400","description":"An issue was discovered in gatt-database.c in BlueZ 5.61. A use-after-free can occur when a client disconnects during D-Bus processing of a WriteValue call.","status":"published","published":"2021-11-04T00:00:00Z","modified":"2025-11-04T16:09:24.717Z","updated_at":"2026-11-02T14:32:56.689433Z"}],"euvd":[{"id":"EUVD-2021-30335","description":"An issue was discovered in gatt-database.c in BlueZ 5.61. A use-after-free can occur when a client disconnects during D-Bus processing of a WriteValue call.","status":"published","published":"2021-11-04T00:00:00Z","modified":"2025-11-04T16:09:24Z","updated_at":"2026-11-02T19:49:29.391161Z"}],"ghsa":[{"id":"GHSA-xgf8-98pj-cm5c","title":"An issue was discovered in gatt-database.c in BlueZ 5.61. A use-after-free can occur when a...","description":"An issue was discovered in gatt-database.c in BlueZ 5.61. A use-after-free can occur when a client disconnects during D-Bus processing of a WriteValue call.","status":"published","published":"2022-05-24T19:19:54Z","modified":"2025-11-04T18:30:36Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T15:04:33.412684Z"}],"nvd":[{"id":"CVE-2021-43400","description":"An issue was discovered in gatt-database.c in BlueZ 5.61. A use-after-free can occur when a client disconnects during D-Bus processing of a WriteValue call.","status":"published","published":"2021-11-04T23:15:10.35Z","modified":"2026-06-17T04:10:55.24Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"primary"},{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:07:00.549994Z"}],"osv":[{"id":"CVE-2021-43400","description":"An issue was discovered in gatt-database.c in BlueZ 5.61. A use-after-free can occur when a client disconnects during D-Bus processing of a WriteValue call.","status":"published","published":"2021-11-04T23:15:10.35Z","modified":"2026-10-24T10:30:55.053462222Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:44:21.877444Z"},{"id":"DEBIAN-CVE-2021-43400","description":"An issue was discovered in gatt-database.c in BlueZ 5.61. A use-after-free can occur when a client disconnects during D-Bus processing of a WriteValue call.","status":"published","published":"2021-11-04T23:15:10.35Z","modified":"2026-10-23T18:04:00.48923834Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:45:35.799676Z"},{"id":"OESA-2022-1527","title":"bluez security update","description":"This package provides all utilities for use in Bluetooth applications. The BLUETOOTH trademarks are owned by Bluetooth SIG, Inc., U.S.A.\r\n\r\nSecurity Fix(es):\r\n\r\nAn issue was discovered in gatt-database.c in BlueZ 5.61. A use-after-free can occur when a client disconnects during D-Bus processing of a WriteValue call.(CVE-2021-43400)","status":"published","published":"2022-02-14T11:04:48Z","modified":"2026-08-18T01:16:20.466730016Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:52:39.528805Z"},{"id":"OESA-2022-2047","title":"bluez security update","description":"This package provides all utilities for use in Bluetooth applications. The BLUETOOTH trademarks are owned by Bluetooth SIG, Inc., U.S.A.\r\n\r\nSecurity Fix(es):\r\n\r\nAn issue was discovered in gatt-database.c in BlueZ 5.61. A use-after-free can occur when a client disconnects during D-Bus processing of a WriteValue call.(CVE-2021-43400)\r\n\r\nImproper access control in BlueZ may allow an authenticated user to potentially enable information disclosure via adjacent access.(CVE-2021-0129)","status":"published","published":"2022-11-11T11:05:21Z","modified":"2026-08-18T01:17:21.562967242Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:52:39.934788Z"},{"id":"UBUNTU-CVE-2021-43400","description":"An issue was discovered in gatt-database.c in BlueZ 5.61. A use-after-free can occur when a client disconnects during D-Bus processing of a WriteValue call.","status":"published","published":"2021-11-04T23:15:00Z","modified":"2026-10-09T01:45:19.406932109Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:54:29.220315Z"},{"id":"DLA-3157-1","title":"bluez - security update","status":"published","published":"2022-10-24T00:00:00Z","modified":"2026-03-09T01:20:16.94095Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"DLA-3879-1","title":"bluez - security update","status":"published","published":"2024-09-07T00:00:00Z","modified":"2026-03-09T01:18:30.227025Z","updated_at":"2026-11-02T15:46:12.203458Z"},{"id":"MGASA-2021-0532","title":"Updated bluez packages fix security vulnerability","description":"BlueZ is a Bluetooth protocol stack for Linux. In affected versions a\nvulnerability exists in sdp_cstate_alloc_buf which allocates memory which\nwill always be hung in the singly linked list of cstates and will not be\nfreed. This will cause a memory leak over time. The data can be a very\nlarge object, which can be caused by an attacker continuously sending sdp\npackets and this may cause the service of the target device to crash.\n(CVE-2021-41229)\n\nAn issue was discovered in gatt-database.c in BlueZ 5.61. A use-after-free\ncan occur when a client disconnects during D-Bus processing of a WriteValue\ncall. (CVE-2021-43400)\n","status":"published","published":"2021-12-02T16:49:28Z","modified":"2026-04-16T04:41:35.898711211Z","updated_at":"2026-11-02T15:49:41.849028Z"},{"id":"SUSE-SU-2022:3687-1","title":"Security update for bluez","description":"This update for bluez fixes the following issues:\n\n- CVE-2021-0129: Fixed improper access control (bsc#1186463).\n- CVE-2020-26558: Fixed vulnerability that may permit a nearby man-in-the-middle attacker to identify the Passkey (bsc#1186463).\n- CVE-2019-8921: Fixed heap-based buffer overflow via crafted request (bsc#1193237).\n- CVE-2019-8922: Fixed heap-based buffer overflow via crafted request (bsc#1193227).\n- CVE-2021-3658: Fixed adapter incorrectly restoring discoverable state after powered down (bsc#1188859).\n- CVE-2021-43400: Fixed use-after-free in gatt-database.c (bsc#1192394).\n\n","status":"published","published":"2022-10-21T12:05:54Z","modified":"2026-02-04T02:13:12.565158Z","updated_at":"2026-11-02T15:53:51.440565Z"},{"id":"SUSE-SU-2022:3691-1","title":"Security update for bluez","description":"This update for bluez fixes the following issues:\n\n- CVE-2019-8921: Fixed heap-based buffer overflow via crafted request (bsc#1193237).\n- CVE-2019-8922: Fixed heap-based buffer overflow via crafted request (bsc#1193227).\n- CVE-2020-26558: Fixed vulnerability that may permit a nearby man-in-the-middle attacker to identify the Passkey (bsc#1186463).\n- CVE-2021-0129: Fixed improper access control (bsc#1186463).\n- CVE-2021-3658: Fixed adapter incorrectly restoring discoverable state after powered down (bsc#1188859).\n- CVE-2021-43400: Fixed use-after-free in gatt-database.c (bsc#1192394).\n","status":"published","published":"2022-10-21T13:10:36Z","modified":"2026-02-04T02:52:01.889281Z","updated_at":"2026-11-02T15:53:51.440565Z"},{"id":"SUSE-SU-2022:3981-1","title":"Security update for bluez","description":"This update for bluez fixes the following issues:\n\n  - CVE-2021-43400: Fixed use-after-free in gatt-database.c (bsc#1192394).\n  - CVE-2021-3658: Fixed adapter incorrectly restoring discoverable state after powered down (bsc#1188859).\n\n","status":"published","published":"2022-11-15T10:45:51Z","modified":"2026-02-04T03:13:44.254359Z","updated_at":"2026-11-02T15:53:51.440565Z"},{"id":"USN-5155-1","title":"bluez vulnerabilities","description":"It was discovered that BlueZ incorrectly handled the Discoverable status\nwhen a device is powered down. This could result in devices being powered\nup discoverable, contrary to expectations. This issue only affected Ubuntu\n20.04 LTS, Ubuntu 21.04, and Ubuntu 21.10. (CVE-2021-3658)\n\nIt was discovered that BlueZ incorrectly handled certain memory operations.\nA remote attacker could possibly use this issue to cause BlueZ to consume\nresources, leading to a denial of service. (CVE-2021-41229)\n\nIt was discovered that the BlueZ gatt server incorrectly handled\ndisconnects. A remote attacker could possibly use this issue to cause\nBlueZ to crash, leading to a denial of service. (CVE-2021-43400)\n","status":"published","published":"2021-11-23T19:04:05Z","modified":"2026-04-27T16:03:37.085780658Z","updated_at":"2026-11-02T16:58:15.683829Z"}]}}