{"id":"CVE-2020-12771","details":"An issue was discovered in the Linux kernel through 5.6.11. btree_gc_coalesce in drivers/md/bcache/btree.c has a deadlock if a coalescing operation fails.","modified":"2026-03-15T22:32:30.456386Z","published":"2020-05-09T21:15:11.210Z","related":["SUSE-SU-2020:2027-1","SUSE-SU-2020:2103-1","SUSE-SU-2020:2105-1","SUSE-SU-2020:2106-1","SUSE-SU-2020:2107-1","SUSE-SU-2020:2119-1","SUSE-SU-2020:2121-1","SUSE-SU-2020:2122-1","SUSE-SU-2020:2134-1","SUSE-SU-2020:2152-1","SUSE-SU-2020:2478-1","SUSE-SU-2020:2487-1","openSUSE-SU-2020:1062-1","openSUSE-SU-2020:1153-1","openSUSE-SU-2021:0242-1"],"references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4465-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4483-1/"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20200608-0001/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4462-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4463-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4485-1/"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00071.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html"},{"type":"FIX","url":"https://lkml.org/lkml/2020/4/26/87"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuApr2021.html"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"5.6.11"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"15.1"}]},{"events":[{"introduced":"0"},{"last_affected":"15.2"}]},{"events":[{"introduced":"0"},{"last_affected":"14.04"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.04"}]},{"events":[{"introduced":"0"},{"last_affected":"20.04"}]},{"events":[{"introduced":"0"},{"last_affected":"8.2"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-12771.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}