{"id":"CVE-2026-80579","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-80579","summary":"fbdev: clear fb_info->mode before deleting a videomode","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: clear fb_info->mode before deleting a videomode\n\nfb_set_var() can delete a mode from info->modelist when userspace\npasses FB_ACTIVATE_INV_MODE through FBIOPUT_VSCREENINFO. The code\nchecks that the mode being deleted is not the current info->var and\nthat fbcon is not using it, but it does not check fb_info->mode.\n\nfb_info->mode may still point into the modelist entry being deleted.\nIf the entry is freed, later mode sysfs reads through show_mode() can\ndereference a stale pointer.\n\nClear fb_info->mode before calling fb_delete_videomode() when it\nmatches the mode being removed.","published":"2026-08-26T14:37:37.320Z","modified":"2026-08-28T03:47:29.379194544Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"7.1.10"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/95e647d2a5304a8fd11f1ba3c8502de700650131"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ce7fef961c63229b22dec415fb988899f479d61f"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80579.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80579"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-28T03:47:29.379194544Z"}}