{"apiVersion":"1.0","identifier":"CVE-2026-80622","description":"In the Linux kernel, the following vulnerability has been resolved: char: tlclk: fix use-after-free in tlclk_cleanup() This patch improves the module cleanup process in the tlclk driver to prevent potential use-after-free and race conditions. Currently, the file_operations structure does not specify the .owner field, which could allow the module to be unloaded while user-space processes are still interacting with the device. Additionally, the tlclk_cleanup() function frees the alarm_events memory before ensuring that blocked processes in the waitqueue are fully awakened and that the switchover_timer has completed. To address these cases, this patch: - Sets -.owner = THIS_MODULE- in tlclk_fops to safely defer module unloading while the device is in use. - Updates tlclk_cleanup() to explicitly wake up all blocked readers (wake_up_all), properly release hardware I/O regions, and safely delete the timer (timer_delete_sync) prior to freeing memory.","publishedAt":"2026-08-28T08:16:46","lastModifiedAt":"2026-08-28T08:16:46","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80622","cvssScore":null,"cvssVector":"Pending","epssProbability":0.00176,"riskScore":0,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-80622","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-80622","en":"https://www.redsauce.net/en/cves/CVE-2026-80622","fr":"https://www.redsauce.net/fr/cves/CVE-2026-80622","pt":"https://www.redsauce.net/pt/cves/CVE-2026-80622","de":"https://www.redsauce.net/de/cves/CVE-2026-80622","sk":"https://www.redsauce.net/sk/cves/CVE-2026-80622","el":"https://www.redsauce.net/el/cves/CVE-2026-80622"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-80622"}}