HOME VULNERABILITIESCVE-2020-27825

MEDIUM

CVE-2020-27825

CWE-362Published: December 11, 2020· Updated: Jun 17, 2026

5.7

CVSS v3.1

Official 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.

Technical Analysis

CVE-2020-27825 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 5.7.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges Req.High

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityHigh

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

Affected Vendors & Products

Debian1 product(s)

debian linux

Linux1 product(s)

linux kernel

netapp5 product(s)

cloud backupsolidfire baseboard management controller firmwaresolidfire baseboard management controllerh410c firmwareh410c

Red Hat2 product(s)

enterprise linuxenterprise mrg

Source: NVD CPE · 11 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1905155

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1905155

ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/02/msg00018.html

ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/03/msg00010.html

ADVISORYhttps://security.netapp.com/advisory/ntap-20210521-0008/

ADVISORYhttps://www.debian.org/security/2021/dsa-4843

ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/02/msg00018.html

ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/03/msg00010.html

ADVISORYhttps://security.netapp.com/advisory/ntap-20210521-0008/

ADVISORYhttps://www.debian.org/security/2021/dsa-4843

All References (10)

→

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

Quick Facts

CVE IDCVE-2020-27825

CVSS Score5.7 / 10

SeverityMEDIUM

WeaknessCWE-362

CISA KEVNo

Affected4 vendor(s)

PublishedDec 11, 2020

Related CVEs (CWE-362)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2020-27825 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.

← All Vulnerabilities·Search for CVE-2020-27825·NVD