CVE-2023-6560

Kernel: io_uring out of boundary memory access in __io_uaddr_map()

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An out-of-bounds memory access flaw was found in the io_uring SQ/CQ rings functionality in the Linux kernel. This issue could allow a local user to crash the system.

Se encontró una falla de acceso a memoria fuera de los límites en la funcionalidad de anillos io_uring SQ/CQ en el kernel de Linux. Este problema podría permitir que un usuario local bloquee el sistema.

__io_uaddr_map() in io_uring suffers from dangerous handling of the multi-page region.

*Credits: N/A

CVSS Scores

NISTv3.1 5.5

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-12-06 CVE Reserved
2023-12-08 CVE Published
2023-12-09 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-823: Use of Out-of-range Pointer Offset

CAPEC

References (6)

URL	Tag	Source
http://packetstormsecurity.com/files/176405/io_uring-__io_uaddr_map-Dangerous-Multi-Page-Handling.html
https://access.redhat.com/security/cve/CVE-2023-6560	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2253249	Issue Tracking
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AU4NHBDEDLRW33O76Y6LFECEYNQET5GZ
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UCQIPFUQXKXRCH5Y4RP3C5NK4IHNBNVK

URL	Date	SRC

URL	Date	SRC
https://patchwork.kernel.org/project/io-uring/patch/20231130194633.649319-2-axboe@kernel.dk	2024-01-08

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				<= 6.6 Search vendor "Linux" for product "Linux Kernel" and version " <= 6.6"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.7 Search vendor "Linux" for product "Linux Kernel" and version "6.7"		rc1		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.7 Search vendor "Linux" for product "Linux Kernel" and version "6.7"		rc2		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.7 Search vendor "Linux" for product "Linux Kernel" and version "6.7"		rc3		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				6.7 Search vendor "Linux" for product "Linux Kernel" and version "6.7"		rc4		Affected