CVE-2023-52731

CVE Details

Release Date:

2024-05-21

Description

In the Linux kernel, the following vulnerability has been resolved:\nfbdev: Fix invalid page access after closing deferred I/O devices\nWhen a fbdev with deferred I/O is once opened and closed, the dirty\npages still remain queued in the pageref list, and eventually later\nthose may be processed in the delayed work. This may lead to a\ncorruption of pages, hitting an Oops.\nThis patch makes sure to cancel the delayed work and clean up the\npageref list at closing the device for addressing the bug. A part of\nthe cleanup code is factored out as a new helper function that is\ncalled from the common fb_release().

See more information about CVE-2023-52731 from MITRE CVE dictionary and NIST NVD

CVSS Scoring

NOTE: The following CVSS v3.1 metrics and score provided are preliminary and subject to review.

Base Score:	4.4	CVSS Vector:	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack Vector:	Local network	Attack Complexity:	Low
Privileges Required:	High	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	None
Integrity Impact:	None	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 9 (kernel)	ELSA-2024-9315	2024-11-14