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CVE-2022-50101

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: video: fbdev: vt8623fb: Check the size of screen before memset_io() In the function vt8623fb_set_par(), the value of 'screen_si…

Published Jun 18, 2025EPSS 0.26%

Overview

CVE-2022-50101 is a high-severity vulnerability. It was published on June 18, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

video: fbdev: vt8623fb: Check the size of screen before memset_io()

In the function vt8623fb_set_par(), the value of 'screen_size' is

calculated by the user input. If the user provides the improper value,

the value of 'screen_size' may larger than 'info->screen_size', which

may cause the following bug:

[ 583.339036] BUG: unable to handle page fault for address: ffffc90005000000

[ 583.339049] #PF: supervisor write access in kernel mode

[ 583.339052] #PF: error_code(0x0002) - not-present page

[ 583.339074] RIP: 0010:memset_orig+0x33/0xb0

[ 583.339110] Call Trace:

[ 583.339118] vt8623fb_set_par+0x11cd/0x21e0

[ 583.339146] fb_set_var+0x604/0xeb0

[ 583.339181] do_fb_ioctl+0x234/0x670

[ 583.339209] fb_ioctl+0xdd/0x130

Fix the this by checking the value of 'screen_size' before memset_io().

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/4a3cef1eaced13ba9b55381d46bfad937a3dac2cRefgit.kernel.org/stable/c/52ad9bfeb8a0e62de30de6d39e8a49a72dd78150Refgit.kernel.org/stable/c/73280a184aa2e1a625ce54ce761042955cc79cd0Refgit.kernel.org/stable/c/b17caec5127bba6f90af92bcc85871df54548ac0Refgit.kernel.org/stable/c/bd8269e57621e5b38cc0b4bd2fa02e85c9f2a441Refgit.kernel.org/stable/c/c7a3f41e4b133d4dd25bc996b69039b19a34d69dRefgit.kernel.org/stable/c/d71528ccdc7ae8d7500d414091d27805c51407a2Refgit.kernel.org/stable/c/ec0754c60217248fa77cc9005d66b2b55200ac06

How CyberStrike helps

Frequently asked questions

What is CVE-2022-50101?

CVE-2022-50101 is a high-severity vulnerability. It was published on June 18, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-50101?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-50101?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-50101?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-50101 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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