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Google_androidCVE-2021-39649

HistoryDec 15, 2021 - 7:15 p.m.

CVE-2021-39649

2021-12-1519:15:15

CWE-667

google_android

web.nvd.nist.gov

cve-2021-39649

regmap_exit

use-after-free

improper locking

local escalation

privilege escalation

android kernel

nvd

security vulnerability

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

6.7

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

Percentile

5.1%

JSON

In regmap_exit of regmap.c, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege in the kernel with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-174049006References: N/A

Affected configurations

Nvd

Node

googleandroidMatch-

VendorProductVersionCPE
googleandroid-cpe:2.3:o:google:android:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
google	android	-	cpe:2.3:o:google:android:-:::::::*

CNA Affected

[
  {
    "product": "Android",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Android kernel"
      }
    ]
  }
]

References

source.android.com/security/bulletin/pixel/2021-12-01

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

6.7

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

Percentile

5.1%

JSON

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