IM
IronMonkey Threat Research

CVE-2023-31436 HIGH

Published: 2023-04-28 | Last Modified: 2024-11-21 | Status: Modified

Description

qfq_change_class in net/sched/sch_qfq.c in the Linux kernel before 6.2.13 allows an out-of-bounds write because lmax can exceed QFQ_MIN_LMAX.

CVSS Metrics

Base Score: 7.8 (HIGH)

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

Attack VectorLOCAL
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactHIGH
Integrity ImpactHIGH
Availability ImpactHIGH

Source: [email protected]

Type: Primary

Exploitability Score: 1.8

Impact Score: 5.9

Weaknesses

Source Type Description
[email protected] Primary
en CWE-787
134c704f-9b21-4f2e-91b3-4a467353bcc0 Secondary
en CWE-787

Affected Products

Vendor Product Version Update Type
linux linux_kernel * <built-in method update of dict object at 0x7fd36a738440> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd369e22ec0> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd3199417c0> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd368de0ac0> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd36a73a6c0> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd36a73b440> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd2a149ed80> Operating System

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

References