Vulnerability 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().
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.19, < 6.1.13 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/3efc61d95259956db25347e2a9562c3e54546e20Patch
- https://git.kernel.org/stable/c/87b9802ca824fcee7915e717e9a60471af62e8e9Patch
- https://git.kernel.org/stable/c/f1d91f0e9d5a240a809698d7d9c5a538e7dcc149Patch
- https://git.kernel.org/stable/c/3efc61d95259956db25347e2a9562c3e54546e20Patch
- https://git.kernel.org/stable/c/87b9802ca824fcee7915e717e9a60471af62e8e9Patch
- https://git.kernel.org/stable/c/f1d91f0e9d5a240a809698d7d9c5a538e7dcc149Patch
FAQ
What is CVE-2023-52731?
CVE-2023-52731 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 di...
How severe is CVE-2023-52731?
CVE-2023-52731 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-52731?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.