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CVE-2022-50101

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().

Verknüpft mit AI von unstrukturierten Daten zu bestehenden CPE der NVD
This information is available to logged-in users.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
VendorLinux
≫
Product Linux
Default Statusunaffected
Version < 73280a184aa2e1a625ce54ce761042955cc79cd0
Version 558b7bd86c32978648cda5deb5c758d77ef0c165
Status affected
Version < 52ad9bfeb8a0e62de30de6d39e8a49a72dd78150
Version 558b7bd86c32978648cda5deb5c758d77ef0c165
Status affected
Version < d71528ccdc7ae8d7500d414091d27805c51407a2
Version 558b7bd86c32978648cda5deb5c758d77ef0c165
Status affected
Version < bd8269e57621e5b38cc0b4bd2fa02e85c9f2a441
Version 558b7bd86c32978648cda5deb5c758d77ef0c165
Status affected
Version < 4a3cef1eaced13ba9b55381d46bfad937a3dac2c
Version 558b7bd86c32978648cda5deb5c758d77ef0c165
Status affected
Version < b17caec5127bba6f90af92bcc85871df54548ac0
Version 558b7bd86c32978648cda5deb5c758d77ef0c165
Status affected
Version < c7a3f41e4b133d4dd25bc996b69039b19a34d69d
Version 558b7bd86c32978648cda5deb5c758d77ef0c165
Status affected
Version < ec0754c60217248fa77cc9005d66b2b55200ac06
Version 558b7bd86c32978648cda5deb5c758d77ef0c165
Status affected
VendorLinux
≫
Product Linux
Default Statusaffected
Version 2.6.22
Status affected
Version < 2.6.22
Version 0
Status unaffected
Version <= 4.14.*
Version 4.14.291
Status unaffected
Version <= 4.19.*
Version 4.19.256
Status unaffected
Version <= 5.4.*
Version 5.4.211
Status unaffected
Version <= 5.10.*
Version 5.10.137
Status unaffected
Version <= 5.15.*
Version 5.15.61
Status unaffected
Version <= 5.18.*
Version 5.18.18
Status unaffected
Version <= 5.19.*
Version 5.19.2
Status unaffected
Version <= *
Version 6.0
Status unaffected
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.04% 0.094
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string