CVE & CISA-KEV Catalog

CVE-2021-39698

HIGH
7.8
CVSS v3
NVD

Description

In aio_poll_complete_work of aio.c, there is a possible memory corruption due to a use after free. 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-185125206References: Upstream kernel

CWE-416Use After Free

How to fix

Remediation Available
linuxDebian
Fixed in:5.10.92-1CVE-2021-39698
Fixed in:5.15.15-1CVE-2021-39698
Fixed in:5.15.15-1CVE-2021-39698
Fixed in:5.15.15-1CVE-2021-39698
linux-aws-5.13Ubuntu
Fixed in:5.13.0-1019.21~20.04.1USN-5337-1
linux-azure-5.13Ubuntu
Fixed in:5.13.0-1021.24~20.04.1USN-5368-1
linux-gcp-5.13Ubuntu
Fixed in:5.13.0-1021.25~20.04.1USN-5337-1
linux-hwe-5.13Ubuntu
Fixed in:5.13.0-37.42~20.04.1USN-5337-1
linux-image-5.13.0-1019-awsUbuntu
Fixed in:5.13.0-1019.21~20.04.1USN-5337-1
linux-image-5.13.0-1021-azureUbuntu
Fixed in:5.13.0-1021.24~20.04.1USN-5368-1
linux-image-5.13.0-1021-gcpUbuntu
Fixed in:5.13.0-1021.25~20.04.1USN-5337-1
linux-image-5.13.0-1025-oracleUbuntu
Fixed in:5.13.0-1025.30~20.04.1USN-5368-1
linux-image-5.13.0-37-genericUbuntu
Fixed in:5.13.0-37.42~20.04.1USN-5337-1
linux-image-5.13.0-37-generic-64kUbuntu
Fixed in:5.13.0-37.42~20.04.1USN-5337-1
linux-image-5.13.0-37-generic-lpaeUbuntu
Fixed in:5.13.0-37.42~20.04.1USN-5337-1
linux-image-5.13.0-37-lowlatencyUbuntu
Fixed in:5.13.0-37.42~20.04.1USN-5337-1
linux-image-awsUbuntu
Fixed in:5.13.0.1019.21~20.04.12USN-5337-1
linux-image-azureUbuntu
Fixed in:5.13.0.1021.24~20.04.10USN-5368-1
linux-image-gcpUbuntu
Fixed in:5.13.0.1021.25~20.04.1USN-5337-1
linux-image-generic-64k-hwe-20.04Ubuntu
Fixed in:5.13.0.37.42~20.04.22USN-5337-1
linux-image-generic-hwe-20.04Ubuntu
Fixed in:5.13.0.37.42~20.04.22USN-5337-1
linux-image-generic-lpae-hwe-20.04Ubuntu
Fixed in:5.13.0.37.42~20.04.22USN-5337-1
linux-image-lowlatency-hwe-20.04Ubuntu
Fixed in:5.13.0.37.42~20.04.22USN-5337-1
linux-image-oracleUbuntu
Fixed in:5.13.0.1025.30~20.04.1USN-5368-1
linux-image-virtual-hwe-20.04Ubuntu
Fixed in:5.13.0.37.42~20.04.22USN-5337-1
linux-oracle-5.13Ubuntu
Fixed in:5.13.0-1025.30~20.04.1USN-5368-1

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

0.23%probability of exploitation in 30 days
14thpercentile

Low risk: more likely to be exploited than 14% 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 2024-11-21.