CVE-2023-52731 (GCVE-0-2023-52731)
Vulnerability from cvelistv5
Published
2024-05-21 15:22
Modified
2025-05-04 07:42
Severity ?
Summary
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().
References
Impacted products
Vendor Product Version
Linux Linux Version: 186b89659c4c67cccead52961eab0ca3b23951dc
Version: 56c134f7f1b58be08bdb0ca8372474a4a5165f31
Version: 56c134f7f1b58be08bdb0ca8372474a4a5165f31
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