发布于3月6日3月6日 Members Debian: CVE-2023-52731: linux -- security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 05/21/2024 Created 07/31/2024 Added 07/30/2024 Modified 07/30/2024 Description In the Linux kernel, the following vulnerability has been resolved: fbdev: Fix invalid page access after closing deferred I/O devices When a fbdev with deferred I/O is once opened and closed, the dirty pages still remain queued in the pageref list, and eventually later those may be processed in the delayed work.This may lead to a corruption of pages, hitting an Oops. This patch makes sure to cancel the delayed work and clean up the pageref list at closing the device for addressing the bug.A part of the cleanup code is factored out as a new helper function that is called from the common fb_release(). Solution(s) debian-upgrade-linux References https://attackerkb.com/topics/cve-2023-52731 CVE - 2023-52731
