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.

CVSS v3.0 5.7 MEDIUM
CVSS v2.0 5.4 MEDIUM

5.7^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 0.5 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.4^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:M/Au:N/C:P/I:N/A:C

Exploitability : 3.4 / Impact : 7.8

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact COMPLETE

References

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

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:5.10:rc1:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:a:redhat:enterprise_mrg:2.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*

Configuration 3 (hide)

OR	cpe:2.3:o:debian:debian_linux:9.0:::::::*
	cpe:2.3:o:debian:debian_linux:10.0:::::::*

Information

Published : 2020-12-11 19:15

Updated : 2021-05-21 09:15

NVD link : CVE-2020-27825

Mitre link : CVE-2020-27825

JSON object : View

Products Affected

debian

debian_linux

redhat

enterprise_linux
enterprise_mrg

linux

linux_kernel

CWE

CWE-416

Use After Free

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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