IM
IronMonkey Threat Research

CVE-2022-1462 MEDIUM

Published: 2022-06-02 | Last Modified: 2024-11-21 | Status: Modified

Description

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.

Additional Descriptions (1)

Se ha encontrado un fallo de lectura fuera de límites en el subsistema TeleTYpe del kernel de Linux. El problema es producido en la forma en que un usuario desencadena una condición de carrera usando los ioctls TIOCSPTLCK y TIOCGPTPEER y TIOCSTI y TCXONC con fuga de memoria en la función flush_to_ldisc. Este fallo permite a un usuario local bloquear el sistema o leer datos aleatorios no autorizados de la memoria

CVSS Metrics

Base Score: 6.3 (MEDIUM)

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

Attack VectorLOCAL
Attack ComplexityHIGH
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactHIGH
Integrity ImpactNONE
Availability ImpactHIGH

Source: [email protected]

Type: Primary

Exploitability Score: 1.0

Impact Score: 5.2

Base Score: 3.3 (LOW)

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

Access VectorLOCAL
Access ComplexityMEDIUM
AuthenticationNONE
Confidentiality ImpactPARTIAL
Integrity ImpactNONE
Availability ImpactPARTIAL

Source: [email protected]

Type: Primary

Exploitability Score: 3.4

Impact Score: 4.9

Weaknesses

Source Type Description
[email protected] Secondary
en CWE-362
[email protected] Secondary
en CWE-362

Affected Products

Vendor Product Version Update Type
linux linux_kernel - <built-in method update of dict object at 0x7fd36865f940> Application
redhat enterprise_linux 8.0 <built-in method update of dict object at 0x7fd36865da80> Operating System
redhat enterprise_linux 9.0 <built-in method update of dict object at 0x7fd384a24ac0> Operating System
debian debian_linux 10.0 <built-in method update of dict object at 0x7fd36865e8c0> Operating System

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
Yes cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

References