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MitreCVE-2021-31795

HistoryApr 24, 2021 - 6:15 p.m.

CVE-2021-31795

2021-04-2418:15:07

CWE-787

mitre

web.nvd.nist.gov

cve-2021-31795

powervr gpu

pvrsrvkm.ko

linux kernel

alcatel 1s

heap memory

physmemnewrambackedpmr

nvd

CVSS2

6.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

6.6

Confidence

High

EPSS

0.001

Percentile

20.9%

JSON

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.

Affected configurations

Nvd

Node

pvrsrvkm.ko_projectpvrsrvkm.koRange≤2021-04-24

VendorProductVersionCPE
pvrsrvkm.ko_projectpvrsrvkm.ko*cpe:2.3:a:pvrsrvkm.ko_project:pvrsrvkm.ko:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
pvrsrvkm.ko_project	pvrsrvkm.ko	*	cpe:2.3:a:pvrsrvkm.ko_project:pvrsrvkm.ko::::::::

References

mcyoloswagham.github.io/linux/

Social References

CVSS2

6.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

6.6

Confidence

High

EPSS

0.001

Percentile

20.9%

JSON

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