{"apiVersion":"1.0","identifier":"CVE-2026-80580","description":"In the Linux kernel, the following vulnerability has been resolved: fbdev: bound mode sysfs output to the sysfs buffer mode_string() uses snprintf() which can return a value larger than the remaining buffer space. show_modes() accumulates the return value into i without checking whether i has reached PAGE_SIZE, causing the offset to advance past the sysfs buffer if the modelist is long enough. Add a size parameter to mode_string() and use scnprintf() to return only the bytes actually written. Add an early return when offset already exceeds the buffer. In show_modes(), stop accumulating once the buffer is full.","publishedAt":"2026-08-26T15:17:14","lastModifiedAt":"2026-08-27T06:17:44","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80580","cvssScore":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00112,"riskScore":0.79,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-80580","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-80580","en":"https://www.redsauce.net/en/cves/CVE-2026-80580","fr":"https://www.redsauce.net/fr/cves/CVE-2026-80580","pt":"https://www.redsauce.net/pt/cves/CVE-2026-80580","de":"https://www.redsauce.net/de/cves/CVE-2026-80580","sk":"https://www.redsauce.net/sk/cves/CVE-2026-80580","el":"https://www.redsauce.net/el/cves/CVE-2026-80580"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-80580"}}