CVEs / CVE-2021-1048
CVE-2021-1048: Android Kernel Use-After-Free Vulnerability
- Known exploited in the CISA KEV catalog since 23 May 2022
- high 7.8 CVSS 3.1 (NVD)
- EPSS 1.05% chance of exploitation in the next 30 days, higher than 64% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Android kernel contains a use-after-free vulnerability that allows for privilege escalation.
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
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| n/a Android | Android kernel | — |
Exploitation
| In CISA KEV since | 23 May 2022 |
|---|---|
| Due date for US federal agencies | 13 Jun 2022 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-416 |
References
- CVE-2021-1048 on NVD
- CVE-2021-1048 in the CISA KEV catalog
- CVE-2021-1048 on OSV
- https://source.android.com/security/bulletin/2021-11-01 Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1048 Third Party Advisory, US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.