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.
Affected versions
Linux kernel versions
3.2
and later are affected. Fixed in
4.9.332,
4.14.298,
4.19.264,
5.4.223,
5.10.153,
5.15.77,
6.0.7,
6.1
and their respective stable series.
References
The following references provide additional information about CVE-2022-50767 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/3f40852d671072836fb7ae331a1f28a24223c4e8
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PatchKernel patch commithttps://git.kernel.org/stable/c/5385af2f89bc352fb70753ab41b2bb036190141f
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PatchKernel patch commithttps://git.kernel.org/stable/c/6f2075ea883e5d7730d0c9ebb1bb8e7a1a7e953f
Frequently asked questions
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What is CVE-2022-50767?
CVE-2022-50767 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.2 onward and has been patched in 4.9.332, 4.14.298, 4.19.264 and others. CVE-2022-50767 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2022-50767?
Yes — CVE-2022-50767 has been patched. Fixed versions include 4.9.332, 4.14.298, 4.19.264 and others. If you are running Linux kernel 3.2 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2022-50767 actively exploited?
No — CVE-2022-50767 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.