CVE-2023-21401 — CRITICAL (9.8)

Vulnerability Description

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.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Google	Android	-

References

https://source.android.com/security/bulletin/2023-12-01Vendor Advisory
https://source.android.com/security/bulletin/2023-12-01Vendor Advisory

FAQ

What is CVE-2023-21401?

CVE-2023-21401 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 ex...

How severe is CVE-2023-21401?

CVE-2023-21401 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2023-21401?

Check the references section above for vendor advisories and patch information. Affected products include: Google Android.