{"id":"DEBIAN-CVE-2022-50101","details":"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-\u003escreen_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().","modified":"2026-09-01T16:05:34.307139472Z","published":"2025-06-18T11:15:39.437Z","upstream":["CVE-2022-50101"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-50101"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50101.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50101.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50101.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}