CVE-2020-27825

MediumCVSS 5.7/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 5.7/10CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H

Weakness enumeration

CWE-362

Affected software

Vendor	Product	Versions
n/a	kernel	before kernel 5.10-rc1

References

https://bugzilla.redhat.com/show_bug.cgi?id=1905155Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210521-0008/Third Party Advisory
https://www.debian.org/security/2021/dsa-4843Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1905155Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210521-0008/Third Party Advisory
https://www.debian.org/security/2021/dsa-4843Third Party Advisory

Timeline

Published: Dec 11, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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