Bug 2253249 (CVE-2023-6560) - CVE-2023-6560 kernel: io_uring out of boundary memory access in __io_uaddr_map()
Summary: CVE-2023-6560 kernel: io_uring out of boundary memory access in __io_uaddr_map()
Keywords:
Status: NEW
Alias: CVE-2023-6560
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2253251
Blocks: 2253176
TreeView+ depends on / blocked
 
Reported: 2023-12-06 15:53 UTC by Alex
Modified: 2024-02-28 06:19 UTC (History)
46 users (show)

Fixed In Version: kernel 6.7-rc5
Doc Type: ---
Doc Text:
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.
Clone Of:
Environment:
Last Closed:
Embargoed:


Attachments (Terms of Use)

Description Alex 2023-12-06 15:53:46 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/

Comment 1 Alex 2023-12-06 15:54:11 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2253251]


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