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CVE-2023-52731 Detail

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().


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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Hyperlink Resource
https://git.kernel.org/stable/c/3efc61d95259956db25347e2a9562c3e54546e20
https://git.kernel.org/stable/c/87b9802ca824fcee7915e717e9a60471af62e8e9
https://git.kernel.org/stable/c/f1d91f0e9d5a240a809698d7d9c5a538e7dcc149

Weakness Enumeration

CWE-ID CWE Name Source

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-52731
NVD Published Date:
05/21/2024
NVD Last Modified:
05/21/2024
Source:
kernel.org