Bug 1217867 (CVE-2023-6560)

Summary:	VUL-0: CVE-2023-6560: kernel: io_uring out of boundary memory access in __io_uaddr_map()
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Kernel Bugs <kernel-bugs>
Status:	RESOLVED FIXED	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	abergmann
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/387226/
Whiteboard:	CVSSv3.1:SUSE:CVE-2023-6560:4.4:(AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description SMASH SMASH 2023-12-07 08:48:49 UTC

A flaw in the Linux Kernel found. For the io_uring SQ/CQ rings, out of boundaries memory access could happen as result of incorrect behavior in function __io_uaddr_map for the case of not physically contiguous memory.

Reference:
https://patchwork.kernel.org/project/io-uring/patch/20231130194633.649319-2-axboe@kernel.dk/

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-6560

Comment 1 Alexander Bergmann 2023-12-07 09:22:22 UTC

The function __io_uaddr_map(...) was introduced in kernel version v6.5.

Commit 820d070feb668 landed already inside the master branch wit tag v6.7-rc4.

Closing as fixed.