CVE-2023-21401
CRITICALAndroid - Local Privilege Escalation via Integer Overflow in DevmemIntChangeSparse
Title source: llmDescription
In DevmemIntChangeSparse of devicemem_server.c, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.
References (1)
Core 1
Core References
Vendor Advisory
https://source.android.com/security/bulletin/2023-12-01
Scores
CVSS v3
9.8
EPSS
0.0010
EPSS Percentile
28.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
Status
published
Products (1)
google/android
Published
Dec 04, 2023
Tracked Since
Feb 18, 2026