High severity · published Dec 15, 2021
CVE-2021-1048
Android Kernel Use-After-Free Vulnerability
In wildKEV
7.8
CVSS
1.1%
EPSS
Yes
On KEV
Description
In ep_loop_check_proc of eventpoll.c, there is a possible way to corrupt memory 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-204573007References: Upstream kernel
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 64% of CVEs
Exploited in the wildYes
CISA KEVListed May 23, 2022
Federal remediation dueJun 13, 2022
Ransomware campaign useNot known
Affected products
Which versions
AN
Android · Google
Android kernel · source: vendor, NVD
KE
Kernel · Android
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-1048
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-1048
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_MISC
https://source.android.com/security/bulletin/2021-11-01
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