CVE-2022-50097

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: video: fbdev: s3fb: Check the size of screen before memset_io() In the function s3fb_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: [ 54.083733] BUG: unable to handle page fault for address: ffffc90003000000 [ 54.083742] #PF: supervisor write access in kernel mode [ 54.083744] #PF: error_code(0x0002) - not-present page [ 54.083760] RIP: 0010:memset_orig+0x33/0xb0...

Affected product and versions

Product

Linux Linux, linux kernel

Affected versions

>= a268422de8bf1b4c0cb97987b6c329c9f6a3da4b < 574912261528589012b61f82d368256247c3a5a8, >= a268422de8bf1b4c0cb97987b6c329c9f6a3da4b < 3c35a0dc2b4e7acf24c796043b64fa3eee799239, >= a268422de8bf1b4c0cb97987b6c329c9f6a3da4b < eacb50f1733660911827d7c3720f4c5425d0cdda, >= a268422de8bf1b4c0cb97987b6c329c9f6a3da4b < 5e0da18956d38e7106664dc1d06367b22f06edd3, >= a268422de8bf1b4c0cb97987b6c329c9f6a3da4b < ce50d94afcb8690813c5522f24cd38737657db81, >= a268422de8bf1b4c0cb97987b6c329c9f6a3da4b < 52461d387cc8c8f8dc40320caa2e9e101f73e7ba, >= a268422de8bf1b4c0cb97987b6c329c9f6a3da4b < e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0, >= a268422de8bf1b4c0cb97987b6c329c9f6a3da4b < 6ba592fa014f21f35a8ee8da4ca7b95a018f13e8, >= 2.6.21, >= 2.6.21 < 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