CVE-2020-27825
MEDIUMLinux Kernel - Use-After-Free in Ring Buffer Trace Open
Title source: llmDescription
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.
References (5)
Core 5
Core References
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1905155
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2021/dsa-4843
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210521-0008/
Scores
CVSS v3
5.7
EPSS
0.0014
EPSS Percentile
33.2%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H
Details
CWE
CWE-362
Status
published
Products (9)
debian/debian_linux
9.0
debian/debian_linux
10.0
linux/linux_kernel
5.10 rc1
netapp/cloud_backup
netapp/h410c_firmware
netapp/solidfire_baseboard_management_controller_firmware
redhat/enterprise_linux
7.0
redhat/enterprise_linux
8.0
redhat/enterprise_mrg
2.0
Published
Dec 11, 2020
Tracked Since
Feb 18, 2026