Android Kernel Race Condition Vulnerability
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…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 2 / 5
- KEV catalog (CISA)23 May 2022
- Exploited in EUVD (ENISA)23 May 2022
- Used by ransomwareno
- EPSS above 10 %0.87%
- No account, over the networkno
What to do
Fix
Update to a fixed version: 5.14.6-1
CISA guidance: Apply updates per vendor instructions.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Description ENISA EUVD
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 products
- Android kernel
Open source packages OSV
- linuxDebian:12 · CVE-2021-0920fixed in 5.14.6-1
- linuxDebian:13 · CVE-2021-0920fixed in 5.14.6-1
Timeline
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Published
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Exploitation reported (ENISA)
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Added to the KEV catalog
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CISA remediation due date
References
Other exploited vulnerabilities from the same vendor
- CVE-2025-48595Android Framework Integer Overflow Vulnerability4.6 · Actively exploited
- CVE-2025-48633Android Framework Information Disclosure Vulnerability3.4 · Background exploitation
- CVE-2025-48572Android Framework Privilege Escalation Vulnerability4.3 · Background exploitation
- CVE-2025-48543Android Runtime Use-After-Free Vulnerability4.7 · Background exploitation
- CVE-2024-43093Android Framework Privilege Escalation Vulnerability4.1 · Background exploitation
- CVE-2024-36971Android Kernel Remote Code Execution Vulnerability4.4 · Background exploitation