IM
IronMonkey Threat Research

CVE-2023-3389 HIGH

Published: 2023-06-28 | Last Modified: 2025-02-13 | Status: Modified

Description

A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Racing a io_uring cancel poll request with a linked timeout can cause a UAF in a hrtimer. We recommend upgrading past commit ef7dfac51d8ed961b742218f526bd589f3900a59 (4716c73b188566865bdd79c3a6709696a224ac04 for 5.10 stable and 0e388fce7aec40992eadee654193cad345d62663 for 5.15 stable).

Additional Descriptions (1)

Una vulnerabilidad de use-after-free en el subsistema de io_uring del kernel de Linux puede ser explotada para lograr la escalada de privilegios locales. Ejecutar una solicitud de io_uring cancelar sondeo con un tiempo de espera vinculado puede provocar una UAF en un hrtimer. Recomendamos actualizar al commit anterior ef7dfac51d8ed961b742218f526bd589f3900a59 (4716c73b188566865bdd79c3a6709696a224ac04 para 5.10 stable y 0e388fce7aec40992eadee654193cad345d62663 para 5.15 stable).

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] Secondary
en CWE-416
[email protected] Primary
en CWE-416

Affected Products

Vendor Product Version Update Type
linux linux_kernel * <built-in method update of dict object at 0x7fd2d3af6640> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd2d3af59c0> Operating System
canonical ubuntu_linux 14.04 <built-in method update of dict object at 0x7fd2983c4e80> Operating System
canonical ubuntu_linux 16.04 <built-in method update of dict object at 0x7fd36b260740> Operating System
canonical ubuntu_linux 18.04 <built-in method update of dict object at 0x7fd2d3af6200> Operating System
canonical ubuntu_linux 20.04 <built-in method update of dict object at 0x7fd2d3af4600> Operating System
canonical ubuntu_linux 22.04 <built-in method update of dict object at 0x7fd37018d800> Operating System
debian debian_linux 10.0 <built-in method update of dict object at 0x7fd3423d96c0> Operating System
debian debian_linux 11.0 <built-in method update of dict object at 0x7fd3423d8c40> Operating System

Affected Configurations

Operator: OR

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

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
Yes cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
Yes cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
Yes cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
Yes cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Yes cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

References