kernel: net/sched: ets: use old 'nbands' while purging unused classes

In the Linux kernel, the following vulnerability has been resolved: net/sched: ets: use old 'nbands' while purging unused classes Shuang reported schets test-case 1 crashing in etsclassqlennotify after recent changes from Lion 2. The problem is: in etsqdiscchange we purge unused DWRR queues; the...

UBUNTU-CVE-2025-38684

In the Linux kernel, the following vulnerability has been resolved: net/sched: ets: use old 'nbands' while purging unused classes Shuang reported schets test-case 1 crashing in etsclassqlennotify after recent changes from Lion 2. The problem is: in etsqdiscchange we purge unused DWRR queues; the...

CVE-2025-38684

CVE-2025-38684 affects the Linux kernel’s net/sched ETS implementation. The issue arose from purging unused DRR queues during ets_qdisc_change(), where the code used the new value of q->nbands for cleanup. The fix ensures the purge uses the old values of q->nbands (and q->nstrict), so pu...

kernel: net/sched: ets: use old 'nbands' while purging unused classes

In the Linux kernel, the following vulnerability has been resolved: net/sched: ets: use old 'nbands' while purging unused classes Shuang reported schets test-case 1 crashing in etsclassqlennotify after recent changes from Lion 2. The problem is: in etsqdiscchange we purge unused DWRR queues; the...