CVE-2020-27825

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.

Published: Dec 11, 2020
Updated: Apr 14, 2023
CVE: CVE-2020-27825
Severity: Medium
Exploit:

CVSS v3:

Severity: Medium
Score: 5.7
AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H

CVSS v2:

Severity: Medium
Score: 5.4
AV:L/AC:M/Au:N/C:P/I:N/A:C

CWEs:

CWE-362
CWE-416

Affected Software
References

Software	From	Fixed in
linux / linux_kernel	5.10-rc1	5.10-rc1.x
redhat / enterprise_linux	7.0	7.0.x
redhat / enterprise_linux	8.0	8.0.x
redhat / enterprise_mrg	2.0	2.0.x
debian / debian_linux	9.0	9.0.x
debian / debian_linux	10.0	10.0.x

https://bugzilla.redhat.com/show_bug.cgi?id=1905155
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
https://security.netapp.com/advisory/ntap-20210521-0008/
https://www.debian.org/security/2021/dsa-4843

Vulnerability Database

CVE-2020-27825

Deep Security Visibility Without the Complexity