CVE-2022-50101

HIGH EPSS 11.8%
Published Jun 18, 20251y ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Jun 18, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

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().

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
11.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥2.6.22  –  <4.14.291
linuxlinux_kernel*≥4.15  –  <4.19.256
linuxlinux_kernel*≥4.20  –  <5.4.211
linuxlinux_kernel*≥5.5  –  <5.10.137
linuxlinux_kernel*≥5.11  –  <5.15.61
linuxlinux_kernel*≥5.16  –  <5.18.18
linuxlinux_kernel*≥5.19  –  <5.19.2

References 8

  • git.kernel.org https://git.kernel.org/stable/c/4a3cef1eaced13ba9b55381d46bfad937a3dac2c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/52ad9bfeb8a0e62de30de6d39e8a49a72dd78150
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/73280a184aa2e1a625ce54ce761042955cc79cd0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b17caec5127bba6f90af92bcc85871df54548ac0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bd8269e57621e5b38cc0b4bd2fa02e85c9f2a441
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c7a3f41e4b133d4dd25bc996b69039b19a34d69d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d71528ccdc7ae8d7500d414091d27805c51407a2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ec0754c60217248fa77cc9005d66b2b55200ac06
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/4a3cef1eaced13ba9b55381d46bfad937a3dac2c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/52ad9bfeb8a0e62de30de6d39e8a49a72dd78150
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/73280a184aa2e1a625ce54ce761042955cc79cd0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b17caec5127bba6f90af92bcc85871df54548ac0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bd8269e57621e5b38cc0b4bd2fa02e85c9f2a441
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c7a3f41e4b133d4dd25bc996b69039b19a34d69d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d71528ccdc7ae8d7500d414091d27805c51407a2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ec0754c60217248fa77cc9005d66b2b55200ac06
    Patch