CVE-2026-90076

CVE-2026-90076 affects the Linux kernel 's net/sched FQ (Fair Queue) qdisc. In fq_init(), the quantum and initial_quantum values are computed from psched_mtu() without overflow protection. A network device with an extremely large MTU (e.g., a dummy device accepting MTU 2147483634) causes the 32-b...

EUVD-2026-81936

In the Linux kernel, the following vulnerability has been resolved: net/sched: fqcodel: clamp default quantum and mtu fqcodelinit sets q-quantum = pschedmtuqdiscdevsch without clamping. A device with a huge MTU e.g. dummy with maxmtu == 0 accepting MTU 2147483634 makes pschedmtu return 0x80000000...

CVE-2026-90074

In the Linux kernel , the fq_pie network scheduling qdisc sets its default quantum from psched_mtu() without clamping. A device with an extremely large MTU (e.g. a dummy device with max_mtu == 0 accepting MTU 2147483634) causes psched_mtu() to return 0x80000000, which overflows the signed flow-&g...

EUVD-2026-81933

In the Linux kernel, the following vulnerability has been resolved: net/sched: sfq: clamp quantum to avoid signed overflow soft lockup sfqinit sets q-quantum = pschedmtuqdiscdevsch unsigned. A device with a huge MTU e.g. dummy with maxmtu == 0 accepting MTU 2147483634 makes pschedmtu return...