-

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
Diese Information steht angemeldeten Benutzern zur Verfügung.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt 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
HerstellerLinux
≫
Produkt 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
Typ Quelle Score Percentile
EPSS FIRST.org 0.04% 0.094
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String