UBUNTU-CVE-2026-52997

In the Linux kernel, the following vulnerability has been resolved: net/sched: schdualpi2: drain both C-queue and L-queue in dualpi2change Fix dualpi2change to correctly enforce updated limit and memlimit values after a configuration change of the dualpi2 qdisc. Before this patch, dualpi2change...

CVE-2026-52997

The CVE-2026-52997 entry documents a Linux kernel net/sched vulnerability in sch_dualpi2 (dualpi2_change) where the code could dereference a NULL skb when switching backlog/memlimit if packets were queued in the L-queue while the C-queue was empty. The fix enforces correct queue draining by: (1) ...