CVE-2021-47419

CVE-2021-47419 is a vulnerability in the Linux kernel's net/sched: sch_taprio component. It arises from the taprio module failing to properly cancel a timer during its destruction process, leading to a use-after-free condition. This flaw affects Linux kernel versions and can be triggered by a local attacker. The vulnerability has a CVSSv3.1 score of 5.5 (Medium), indicating a local attack vector with low attack complexity. A successful exploit could lead to a denial-of-service (DoS) condition, impacting system availability, but does not directly compromise confidentiality or integrity. Currently, there is no evidence of active exploitation, and no public exploit code is available on platforms like Metasploit or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting low public awareness or interest.