CVE & CISA-KEV Catalog

CVE-2022-20566

HIGH
7.8
CVSS v3
NVD

Description

In l2cap_chan_put of l2cap_core, there is a possible use after free due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-165329981References: Upstream kernel

CWE-416Use After FreeCWE-667

How to fix

Remediation Available
linuxDebian
Fixed in:5.10.136-1CVE-2022-20566
Fixed in:5.18.16-1CVE-2022-20566
Fixed in:5.18.16-1CVE-2022-20566
Fixed in:5.18.16-1CVE-2022-20566
linuxUbuntu
Fixed in:4.4.0-237.271USN-5926-1
linux-awsUbuntu
Fixed in:4.4.0-1116.122USN-5926-1
Fixed in:4.4.0-1154.169USN-5884-1
linux-image-4.4.0-1116-awsUbuntu
Fixed in:4.4.0-1116.122USN-5926-1
linux-image-4.4.0-1117-kvmUbuntu
Fixed in:4.4.0-1117.127USN-5926-1
linux-image-4.4.0-1154-awsUbuntu
Fixed in:4.4.0-1154.169USN-5884-1
linux-image-4.4.0-237-genericUbuntu
Fixed in:4.4.0-237.271~14.04.1USN-5926-1
Fixed in:4.4.0-237.271+1USN-5926-1
linux-image-4.4.0-237-lowlatencyUbuntu
Fixed in:4.4.0-237.271~14.04.1USN-5926-1
Fixed in:4.4.0-237.271+1USN-5926-1
linux-image-5.14.0-1058-oemUbuntu
Fixed in:5.14.0-1058.66USN-5913-1
linux-image-5.17.0-1028-oemUbuntu
Fixed in:5.17.0-1028.29USN-5913-1
linux-image-awsUbuntu
Fixed in:4.4.0.1116.113USN-5926-1
Fixed in:4.4.0.1154.158USN-5884-1
linux-image-genericUbuntu
Fixed in:4.4.0.237.243USN-5926-1
linux-image-generic-lts-xenialUbuntu
Fixed in:4.4.0.237.206USN-5926-1
Fixed in:4.4.0.237.243USN-5926-1
linux-image-kvmUbuntu
Fixed in:4.4.0.1117.114USN-5926-1
linux-image-lowlatencyUbuntu
Fixed in:4.4.0.237.243USN-5926-1
linux-image-lowlatency-lts-xenialUbuntu
Fixed in:4.4.0.237.206USN-5926-1
Fixed in:4.4.0.237.243USN-5926-1
linux-image-oem-20.04Ubuntu
Fixed in:5.14.0.1058.56USN-5913-1
linux-image-oem-20.04bUbuntu
Fixed in:5.14.0.1058.56USN-5913-1
linux-image-oem-20.04cUbuntu
Fixed in:5.14.0.1058.56USN-5913-1
linux-image-oem-20.04dUbuntu
Fixed in:5.14.0.1058.56USN-5913-1
linux-image-oem-22.04Ubuntu
Fixed in:5.17.0.1028.26USN-5913-1
linux-image-oem-22.04aUbuntu
Fixed in:5.17.0.1028.26USN-5913-1
linux-image-virtualUbuntu
Fixed in:4.4.0.237.243USN-5926-1
linux-image-virtual-lts-xenialUbuntu
Fixed in:4.4.0.237.206USN-5926-1
Fixed in:4.4.0.237.243USN-5926-1
linux-kvmUbuntu
Fixed in:4.4.0-1117.127USN-5926-1
linux-lts-xenialUbuntu
Fixed in:4.4.0-237.271~14.04.1USN-5926-1
linux-oem-5.14Ubuntu
Fixed in:5.14.0-1058.66USN-5913-1
linux-oem-5.17Ubuntu
Fixed in:5.17.0-1028.29USN-5913-1

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 ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

0.17%probability of exploitation in 30 days
6thpercentile

Low risk: more likely to be exploited than 6% of all known CVEs.

References

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2019-0708Critical9.8100%KEV + Ransom-
CVE-2021-31166Critical9.8100%KEVFix
CVE-2015-5119Critical9.899%KEV-
CVE-2010-3962High8.197%KEV-
CVE-2015-0313Critical9.896%KEVFix
CVE-2017-9798High7.595%-Fix
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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.