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ubuntucveUbuntu.comUB:CVE-2023-20938
HistoryFeb 28, 2023 - 12:00 a.m.

CVE-2023-20938

2023-02-2800:00:00
ubuntu.com
ubuntu.com
39
android
android kernel
use after free
input validation
local escalation
privilege escalation
binder ipc mechanism
upstream kernel.

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.0004 Low

EPSS

Percentile

5.1%

JSON

In binder_transaction_buffer_release of binder.c, there is a possible use
after free due to improper input validation. This could lead to local
escalation of privilege with no additional execution privileges needed.
User interaction is not needed for exploitation.Product: AndroidVersions:
Android kernelAndroid ID: A-257685302References: Upstream kernel

Notes

Author Note
sbeattie affects the binder IPC mechanism the break commits for the last three fix commits are the introduction of binder into the staging tree, there may be a tighter bound for them.
OSVersionArchitecturePackageVersionFilename
ubuntu20.04noarchlinux< 5.4.0-144.161UNKNOWN
ubuntu22.04noarchlinux< 5.15.0-72.79UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1097.105UNKNOWN
ubuntu22.04noarchlinux-aws< 5.15.0-1036.40UNKNOWN
ubuntu20.04noarchlinux-aws-5.15< 5.15.0-1036.40~20.04.1UNKNOWN
ubuntu18.04noarchlinux-aws-5.4< 5.4.0-1097.105~18.04.1UNKNOWN
ubuntu20.04noarchlinux-azure< 5.4.0-1104.110UNKNOWN
ubuntu22.04noarchlinux-azure< 5.15.0-1038.45UNKNOWN
ubuntu20.04noarchlinux-azure-5.15< 5.15.0-1038.45~20.04.1UNKNOWN
ubuntu18.04noarchlinux-azure-5.4< 5.4.0-1104.110~18.04.1UNKNOWN
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1-10 of 431

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7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.0004 Low

EPSS

Percentile

5.1%

JSON
Related for UB:CVE-2023-20938
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