CVE-2021-47512 net/sched: fq_pie: prevent dismantle issue

In the Linux kernel, the following vulnerability has been resolved: net/sched: fqpie: prevent dismantle issue For some reason, fqpiedestroy did not copy working code from piedestroy and other qdiscs, thus causing elusive bug. Before calling deltimersync&q-adapttimer, we need to ensure timer will...

CVE-2021-47512

CVE-2021-47512 is a Linux kernel vulnerability in the net/sched fq_pie implementation. The root cause is that fq_pie_destroy() did not copy the timer handling logic from pie_destroy() and other qdiscs, potentially allowing a timer to rearm after del_timer_sync(&q->adapt_timer). The issue has b...

CVE-2021-47512 net/sched: fq_pie: prevent dismantle issue

In the Linux kernel, the following vulnerability has been resolved: net/sched: fqpie: prevent dismantle issue For some reason, fqpiedestroy did not copy working code from piedestroy and other qdiscs, thus causing elusive bug. Before calling deltimersync&q-adapttimer, we need to ensure timer will...