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CVE-2021-1048: Android Kernel Use-After-Free Vulnerability

criticalknown exploitedCVE-2021-1048
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Android kernel contains a use-after-free vulnerability that allows for privilege escalation.

CSIRTS triage

vendor: Androidproduct: KernelPrivilege escalation
What
A use-after-free vulnerability in the Android kernel allows for privilege escalation.
Who is affected
Devices running the affected Android kernel versions are at risk.
Urgency
Immediate remediation is necessary due to active exploitation and critical severity.
Action
Update the Android kernel to the patched version.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-05-23
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2021-1048

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2021-1048coverage & exploitation statusNVD · CVE.org

Recent advisories for Android Kernel Use-After-Free

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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