CVE-2022-50101

Vulnerability overview

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_or...

Affected product and versions

Product

Linux Linux, linux kernel

Affected versions

>= 558b7bd86c32978648cda5deb5c758d77ef0c165 < 73280a184aa2e1a625ce54ce761042955cc79cd0, >= 558b7bd86c32978648cda5deb5c758d77ef0c165 < 52ad9bfeb8a0e62de30de6d39e8a49a72dd78150, >= 558b7bd86c32978648cda5deb5c758d77ef0c165 < d71528ccdc7ae8d7500d414091d27805c51407a2, >= 558b7bd86c32978648cda5deb5c758d77ef0c165 < bd8269e57621e5b38cc0b4bd2fa02e85c9f2a441, >= 558b7bd86c32978648cda5deb5c758d77ef0c165 < 4a3cef1eaced13ba9b55381d46bfad937a3dac2c, >= 558b7bd86c32978648cda5deb5c758d77ef0c165 < b17caec5127bba6f90af92bcc85871df54548ac0, >= 558b7bd86c32978648cda5deb5c758d77ef0c165 < c7a3f41e4b133d4dd25bc996b69039b19a34d69d, >= 558b7bd86c32978648cda5deb5c758d77ef0c165 < ec0754c60217248fa77cc9005d66b2b55200ac06, >= 2.6.22, >= 2.6.22 < 4.14.291, >= 4.15 < 4.19.256, >= 4.20 < 5.4.211, >= 5.5 < 5.10.137, >= 5.11 < 5.15.61, >= 5.16 < 5.18.18, >= 5.19 < 5.19.2

Fixed versions

4.14.291, 4.19.256, 5.4.211, 5.10.137, 5.15.61, 5.18.18, 5.19.2

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

Not available