CVE & CISA-KEV Catalog

CVE-2022-20567

MEDIUM
6.4
CVSS v3
NVD

Description

In pppol2tp_create of l2tp_ppp.c, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-186777253References: Upstream kernel

CWE-362Race Condition

How to fix

Remediation Available
linuxDebian
Fixed in:4.15.11-1CVE-2022-20567
Fixed in:4.15.11-1CVE-2022-20567
Fixed in:4.15.11-1CVE-2022-20567
Fixed in:4.15.11-1CVE-2022-20567
linuxUbuntu
Fixed in:4.4.0-252.286USN-6700-1
linux-awsUbuntu
Fixed in:4.4.0-1129.135USN-6700-1
Fixed in:4.4.0-1167.182USN-6700-2
linux-image-4.4.0-1129-awsUbuntu
Fixed in:4.4.0-1129.135USN-6700-1
linux-image-4.4.0-1130-kvmUbuntu
Fixed in:4.4.0-1130.140USN-6700-1
linux-image-4.4.0-1167-awsUbuntu
Fixed in:4.4.0-1167.182USN-6700-2
linux-image-4.4.0-252-genericUbuntu
Fixed in:4.4.0-252.286~14.04.1USN-6700-1
Fixed in:4.4.0-252.286USN-6700-1
linux-image-4.4.0-252-lowlatencyUbuntu
Fixed in:4.4.0-252.286~14.04.1USN-6700-1
Fixed in:4.4.0-252.286USN-6700-1
linux-image-awsUbuntu
Fixed in:4.4.0.1129.126USN-6700-1
Fixed in:4.4.0.1167.171USN-6700-2
linux-image-genericUbuntu
Fixed in:4.4.0.252.258USN-6700-1
linux-image-generic-lts-xenialUbuntu
Fixed in:4.4.0.252.219USN-6700-1
Fixed in:4.4.0.252.258USN-6700-1
linux-image-kvmUbuntu
Fixed in:4.4.0.1130.127USN-6700-1
linux-image-lowlatencyUbuntu
Fixed in:4.4.0.252.258USN-6700-1
linux-image-lowlatency-lts-xenialUbuntu
Fixed in:4.4.0.252.219USN-6700-1
Fixed in:4.4.0.252.258USN-6700-1
linux-image-virtualUbuntu
Fixed in:4.4.0.252.258USN-6700-1
linux-image-virtual-lts-xenialUbuntu
Fixed in:4.4.0.252.219USN-6700-1
Fixed in:4.4.0.252.258USN-6700-1
linux-kvmUbuntu
Fixed in:4.4.0-1130.140USN-6700-1
linux-lts-xenialUbuntu
Fixed in:4.4.0-252.286~14.04.1USN-6700-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityHigh
Privileges RequiredHigh
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

0.11%probability of exploitation in 30 days
2ndpercentile

Low risk: more likely to be exploited than 2% of all known CVEs.

References

Related Vulnerabilities

Other CWE-362 (Race Condition) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2024-6387High8.1100%-Fix
CVE-2023-36884High7.599%KEV + RansomFix
CVE-2018-15473Medium5.399%-Fix
CVE-2024-27983High8.287%-Fix
CVE-2014-0226Medium6.886%-Fix
CVE-2016-5195High7.084%KEVFix
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-21.