CVE-2022-20421
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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
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Advisory Details
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CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
Advisory provided by GitHub Security Advisory Database. Published: October 12, 2022, Modified: October 13, 2022
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Binder-Based Use-After-Free Leading to kASLR Bypass and Root Access on Android The CVE-2022-20421 vulnerability in the Android kernel is a use-after-free (UAF) bug involving a spinlock. This vulnerability is triggered via the Binder IPC mechanism and exploits type confusion through a pointer with only the two least significant bits (LSBs) …