CVE-2022-20421

Advisory lineage Upstream: 0 Downstream: 14
Modified
Published: 11 Oct 2022, 00:00
Last modified:03 Aug 2024, 02:10

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
5.57% LOW
6% probability -0.90%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

11 Oct 2022, 00:00
Published
Vulnerability first disclosed
03 Aug 2024, 02:10
Last Modified
Vulnerability information updated

Description

In binder_inc_ref_for_node of binder.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-239630375References: Upstream kernel

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 5.57%• Percentile: 90%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • debian•debian_linux

    10.0 | 11.0

  • google•android

    na

References (3)