{"id":"CVE-2022-50097","summary":"video: fbdev: s3fb: Check the size of screen before memset_io()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nvideo: fbdev: s3fb: Check the size of screen before memset_io()\n\nIn the function s3fb_set_par(), the value of 'screen_size' is\ncalculated by the user input. If the user provides the improper value,\nthe value of 'screen_size' may larger than 'info-\u003escreen_size', which\nmay cause the following bug:\n\n[   54.083733] BUG: unable to handle page fault for address: ffffc90003000000\n[   54.083742] #PF: supervisor write access in kernel mode\n[   54.083744] #PF: error_code(0x0002) - not-present page\n[   54.083760] RIP: 0010:memset_orig+0x33/0xb0\n[   54.083782] Call Trace:\n[   54.083788]  s3fb_set_par+0x1ec6/0x4040\n[   54.083806]  fb_set_var+0x604/0xeb0\n[   54.083836]  do_fb_ioctl+0x234/0x670\n\nFix the this by checking the value of 'screen_size' before memset_io().","modified":"2026-04-03T13:14:35.206766Z","published":"2025-06-18T11:02:34.589Z","related":["SUSE-SU-2025:02264-1","SUSE-SU-2025:02308-1","SUSE-SU-2025:02320-1","SUSE-SU-2025:02321-1","SUSE-SU-2025:02322-1","SUSE-SU-2025:02334-1","SUSE-SU-2025:02537-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50097.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3c35a0dc2b4e7acf24c796043b64fa3eee799239"},{"type":"WEB","url":"https://git.kernel.org/stable/c/52461d387cc8c8f8dc40320caa2e9e101f73e7ba"},{"type":"WEB","url":"https://git.kernel.org/stable/c/574912261528589012b61f82d368256247c3a5a8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5e0da18956d38e7106664dc1d06367b22f06edd3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6ba592fa014f21f35a8ee8da4ca7b95a018f13e8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ce50d94afcb8690813c5522f24cd38737657db81"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/eacb50f1733660911827d7c3720f4c5425d0cdda"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50097.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-50097"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a268422de8bf1b4c0cb97987b6c329c9f6a3da4b"},{"fixed":"574912261528589012b61f82d368256247c3a5a8"},{"fixed":"3c35a0dc2b4e7acf24c796043b64fa3eee799239"},{"fixed":"eacb50f1733660911827d7c3720f4c5425d0cdda"},{"fixed":"5e0da18956d38e7106664dc1d06367b22f06edd3"},{"fixed":"ce50d94afcb8690813c5522f24cd38737657db81"},{"fixed":"52461d387cc8c8f8dc40320caa2e9e101f73e7ba"},{"fixed":"e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0"},{"fixed":"6ba592fa014f21f35a8ee8da4ca7b95a018f13e8"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50097.json"}}],"schema_version":"1.7.5"}