CVE-2021-0920
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Actively Exploited
CISA Known Exploited Vulnerabilities (KEV) Catalog
EPSS (Exploit Prediction Scoring System) estimates a 0.9% chance this CVE is exploited in the wild within the next 30 days — higher than 59% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.
Android kernel contains a race condition, which allows for a use-after-free vulnerability. Exploitation can allow for privilege escalation.
Description
In unix_scm_to_skb of af_unix.c, there is a possible use after free bug 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-196926917References: Upstream kernel
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (3)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- HIGH
- Privileges
- HIGH
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Quick Info
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