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ubuntucveUbuntu.comUB:CVE-2022-1462
HistoryJun 02, 2022 - 12:00 a.m.

CVE-2022-1462

2022-06-0200:00:00
ubuntu.com
ubuntu.com
28

6.3 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

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

3.3 Low

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

5.3%

JSON

An out-of-bounds read flaw was found in the Linux kernel’s TeleTYpe
subsystem. The issue occurs in how a user triggers a race condition using
ioctls TIOCSPTLCK and TIOCGPTPEER and TIOCSTI and TCXONC with leakage of
memory in the flush_to_ldisc function. This flaw allows a local user to
crash the system or read unauthorized random data from memory.

Bugs

Notes

Author Note
sbeattie prequisite fix would be 716b10580283 (“tty: extract tty_flip_buffer_commit() from tty_flip_buffer_push()”)
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-197.208UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-128.144UNKNOWN
ubuntu22.04noarchlinux< 5.15.0-50.56UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-239.273) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1143.155UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1086.93UNKNOWN
ubuntu22.04noarchlinux-aws< 5.15.0-1021.25UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1117.123) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1155.170) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu20.04noarchlinux-aws-5.15< 5.15.0-1021.25~20.04.1UNKNOWN
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6.3 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

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

3.3 Low

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

5.3%

JSON
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