CVE-2022-50767
Published Dec 24, 2025
Modified Apr 15, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: fbdev: smscufx: Fix several use-after-free bugs Several types of UAFs can occur when physically removing a USB device. Adds ufx_ops_destroy() function to .fb_destroy of fb_ops, and in this function, there is kref_put() that finally calls ufx_free(). This fix prevents multiple UAFs.
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References
Other References
https://git.kernel.org/stable/c/3f40852d671072836fb7ae331a1f28a24223c4e8
https://git.kernel.org/stable/c/5385af2f89bc352fb70753ab41b2bb036190141f
https://git.kernel.org/stable/c/6f2075ea883e5d7730d0c9ebb1bb8e7a1a7e953f
https://git.kernel.org/stable/c/70faf9d9b6cc74418716bbf76fe75bd2da10ad4a
https://git.kernel.org/stable/c/8d924b262f3178a9b17c17d4306a9f426c508bd9
https://git.kernel.org/stable/c/cc67482c9e5f2c80d62f623bcc347c29f9f648e1
https://git.kernel.org/stable/c/cc6a7249842fceda7574ceb63275a2d5e99d2862
https://git.kernel.org/stable/c/d9ddfeb01fb95ffbbc7031d46a5ee2a5e45cbb86
Frequently Asked Questions
What is CVE-2022-50767? +
In the Linux kernel, the following vulnerability has been resolved:
fbdev: smscufx: Fix several use-after-free bugs
Several types of UAFs can occur when physically removing a USB device.
Adds ufx_ops_destroy() function to .fb_destroy of fb_ops, and
in this function, there is kref_put() that finally calls ufx_free().
This fix prevents multiple UAFs.
How do I check if I'm vulnerable to CVE-2022-50767? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.