{"id":"CVE-2020-27825","details":"A use-after-free flaw was found in kernel/trace/ring_buffer.c in Linux kernel (before 5.10-rc1). There was a race problem in trace_open and resize of cpu buffer running parallely on different cpus, may cause a denial of service problem (DOS). This flaw could even allow a local attacker with special user privilege to a kernel information leak threat.","aliases":["A-175769054","PUB-A-175769054"],"modified":"2026-03-15T21:57:46.596578Z","published":"2020-12-11T19:15:12.607Z","related":["MGASA-2021-0030","MGASA-2021-0031","SUSE-SU-2021:0094-1","SUSE-SU-2021:0095-1","SUSE-SU-2021:0096-1","SUSE-SU-2021:0097-1","SUSE-SU-2021:0098-1","SUSE-SU-2021:0108-1","SUSE-SU-2021:0117-1","SUSE-SU-2021:0118-1","SUSE-SU-2021:0133-1","SUSE-SU-2021:0434-1","SUSE-SU-2021:0437-1","SUSE-SU-2021:0438-1","SUSE-SU-2021:0452-1","SUSE-SU-2022:0197-1","openSUSE-SU-2021:0060-1","openSUSE-SU-2021:0075-1","openSUSE-SU-2021:0242-1"],"references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210521-0008/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4843"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1905155"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-27825.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"5.10-rc1"}]},{"events":[{"introduced":"0"},{"last_affected":"7.0"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"2.0"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H"}]}