CVE-2026-74583 | Linux Kernel up to 7.1.8 cls_route net/sched/cls_route.c route4_set_fastmap use after free

August 21, 2026 Yanac

A vulnerability was found in Linux Kernel up to 7.1.8. It has been declared as very critical. The impacted element is the function route4_set_fastmap of the file net/sched/cls_route.c of the component cls_route. Such manipulation leads to use after free.

This vulnerability is listed as CVE-2026-74583. The attack may be performed from remote. There is no available exploit.

It is recommended to upgrade the affected component.VulDB Recent EntriesRead More