CVE-2021-31795

CVSS V2 Medium 6.9 CVSS V3 High 7

Description

The PowerVR GPU kernel driver in pvrsrvkm.ko through 2021-04-24 for the Linux kernel, as used on Alcatel 1S phones, allows attackers to overwrite heap memory via PhysmemNewRamBackedPMR.

Overview

CVE ID
CVE-2021-31795

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2021-04-24T18:15:07

Last Modified Date
2021-05-06T18:45:09

Weakness Enumerations

CWE	URL
CWE-787	http://cwe.mitre.org/data/definitions/787.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:pvrsrvkm.ko_project:pvrsrvkm.ko::::::::	1	OR		2021-04-24

CVSS Version 2

Version
2.0

Vector String
AV:L/AC:M/Au:N/C:C/I:C/A:C

Access Vector
LOCAL

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
COMPLETE

Integrity Impact
COMPLETE

Availability Impact
COMPLETE

Base Score
6.9

Severity
MEDIUM

Exploitability Score
3.4

Impact Score
10

CVSS Version 3

Version
3.1

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

Attack Vector
LOCAL

Attack Compatibility
HIGH

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
7

Base Severity
HIGH

Exploitability Score
1

Impact Score
5.9

References

Reference URL	Reference Tags
https://mcyoloswagham.github.io/linux/	Exploit Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-31795
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31795

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 16:16:49				Added to TrackCVE
2022-12-06 02:45:49	2021-04-24T18:15Z	2021-04-24T18:15:07	CVE Published Date	updated
2022-12-06 02:45:49		2021-05-06T18:45:09	CVE Modified Date	updated
2022-12-06 02:45:49		Analyzed	Vulnerability Status	updated