{"cve":"CVE-2026-80785","nvd":{"published":"2026-09-04T16:18:04.470","modified":"2026-09-07T15:17:32.513","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: serialize mode sysfs access with lock_fb_info()\n\nshow_mode(), show_modes(), and store_mode() access fb_info->modelist\nand fb_info->mode without holding lock_fb_info(). store_modes() takes\nlock_fb_info() while replacing the modelist and freeing the old one.\n\nA concurrent reader or writer can load a pointer to an old modelist\nentry before store_modes() frees it, then dereference freed memory or\nstore a stale freed pointer in fb_info->mode.\n\nTake lock_fb_info() in show_mode(), show_modes(), and store_mode() to\nserialize with store_modes(). In show_mode(), copy the mode to the\nstack and format after dropping the lock. In store_mode(), split\nactivate() into a _locked variant to avoid double-locking, and hold\nthe locks for the modelist walk, mode conversion, activation, and\nfb_info->mode assignment together.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/061db6b7a910b8378f3b2df64f8c0a3ddc6e85f2","https://git.kernel.org/stable/c/26135631ed8e487bc6aef70cc41934e258d09bbe"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:52:03.409947763+00:00"},"epss":{"cve":"CVE-2026-80785","score":0.00155,"percentile":0.04657,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}