PT-2026-98674

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A denial of service occurs when the hhf change function accepts an arbitrary quantum value from userspace. If a quantum of 1 is provided alongside a crafted size table, the qdisc pkt len...

CVE-2026-98011

In the Linux kernel, the following vulnerability has been resolved: net/sched: hhf: clamp quantum in change and init paths hhfchange accepts any quantum from userspace, including 1. With a crafted size table qdiscpktlen reaches 2 GiB, so quantum=1 makes the deficit-refill loop spin 2^31 times und...

Linux Distros Unpatched Vulnerability : CVE-2026-98011

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/sched: hhf: clamp quantum in change and init paths hhfchange accepts any quantum from userspace, including 1. With a crafted size table qdiscpktlen reaches ...

SUSE CVE-2026-90073

In the Linux kernel, the following vulnerability has been resolved: net/sched: hhf: clamp quantum before hhfchange to avoid overflow hhfinit sets q-quantum = pschedmtuqdiscdevsch with no overflow check. A device with a huge MTU e.g. dummy with maxmtu == 0 accepting MTU 2147483634 makes weight...

Linux Distros Unpatched Vulnerability : CVE-2026-90073

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/sched: hhf: clamp quantum before hhfchange to avoid overflow hhfinit sets q-quantum = pschedmtuqdiscdevsch with no overflow check. A device with a huge MTU...

AZL-102557 CVE-2026-90073 affecting package kernel for versions less than 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: net/sched: hhf: clamp quantum before hhfchange to avoid overflow hhfinit sets q-quantum = pschedmtuqdiscdevsch with no overflow check. A device with a huge MTU e.g. dummy with maxmtu == 0 accepting MTU 2147483634 makes weight...

CVE-2026-90073

In the Linux kernel, the following vulnerability has been resolved: net/sched: hhf: clamp quantum before hhfchange to avoid overflow hhfinit sets q-quantum = pschedmtuqdiscdevsch with no overflow check. A device with a huge MTU e.g. dummy with maxmtu == 0 accepting MTU 2147483634 makes weight...

EUVD-2026-81934

In the Linux kernel, the following vulnerability has been resolved: net/sched: hhf: clamp quantum before hhfchange to avoid overflow hhfinit sets q-quantum = pschedmtuqdiscdevsch with no overflow check. A device with a huge MTU e.g. dummy with maxmtu == 0 accepting MTU 2147483634 makes weight...

CVE-2026-90073

This Linux kernel vulnerability affects the net/sched hhf (Hierarchical Fair Queuing) scheduler. The root cause is that hhf_init() assigns the device MTU directly to the quantum without an overflow check; a device with a very large MTU (e.g., a dummy device with max_mtu == 0 accepting MTU 2147483...

CVE-2026-90073: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/sched: hhf: clamp quantum before hhfchange to avoid overflow hhfinit sets q-quantum = pschedmtuqdiscdevsch with no overflow check. A device with a huge MTU e.g. dummy with maxmtu == 0 accepting MTU 2147483634 makes weight...

AZL-66986 CVE-2025-39677 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: net/sched: Fix backlog accounting in qdiscdequeueinternal This issue applies for the following qdiscs: hhf, fq, fqcodel, and fqpie, and occurs in their change handlers when adjusting to the new limit. The problem is the following...

UBUNTU-CVE-2025-39677

In the Linux kernel, the following vulnerability has been resolved: net/sched: Fix backlog accounting in qdiscdequeueinternal This issue applies for the following qdiscs: hhf, fq, fqcodel, and fqpie, and occurs in their change handlers when adjusting to the new limit. The problem is the following...

CVE-2025-39677 net/sched: Fix backlog accounting in qdisc_dequeue_internal

In the Linux kernel, the following vulnerability has been resolved: net/sched: Fix backlog accounting in qdiscdequeueinternal This issue applies for the following qdiscs: hhf, fq, fqcodel, and fqpie, and occurs in their change handlers when adjusting to the new limit. The problem is the following...

CVE-2025-39677: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/sched: Fix backlog accounting in qdiscdequeueinternal This issue applies for the following qdiscs: hhf, fq, fqcodel, and fqpie, and occurs in their change handlers when adjusting to the new limit. The problem is the following...