CVE-2026-23105 net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag

In the Linux kernel, the following vulnerability has been resolved: net/sched: qfq: Use clisactive to determine whether class is active in qfqrmfromag This is more of a preventive patch to make the code more consistent and to prevent possible exploits that employ child qlen manipulations on qfq...

CVE-2026-23105

In the Linux kernel, the following vulnerability has been resolved: net/sched: qfq: Use clisactive to determine whether class is active in qfqrmfromag This is more of a preventive patch to make the code more consistent and to prevent possible exploits that employ child qlen manipulations on qfq...

CVE-2026-23074

CVE-2026-23074 is a Linux kernel vulnerability in net/sched teql where the teql queuing discipline may be used outside its intended root qdisc, allowing a crafted packet sequence to create a use-after-free scenario in the qfq/qos path due to queue length (qlen) handling. The root cause is that te...

CVE-2026-23074 net/sched: Enforce that teql can only be used as root qdisc

In the Linux kernel, the following vulnerability has been resolved: net/sched: Enforce that teql can only be used as root qdisc Design intent of teql is that it is only supposed to be used as root qdisc. We need to check for that constraint. Although not important, I will describe the scenario th...

CVE-2026-23069

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix potential underflow in virtiotransportgetcredit The credit calculation in virtiotransportgetcredit uses unsigned arithmetic: ret = vvs-peerbufalloc - vvs-txcnt - vvs-peerfwdcnt; If the peer shrinks its advertise...

curl: MQTT Protocol Packet Injection via Unchecked CONNACK Remaining Length

I'm not sure if this is a vulnerability or intended behavior, but I noticed that curl MQTT implementation accepts CONNACK packets with Remaining Length values greater than 2, which appears to violate the MQTT v3.1.1 specification. According to the MQTT spec, CONNACK packets should have a Remainin...

OPENSUSE-SU-2026:20082-1 Security update for rabbitmq-server

This update for rabbitmq-server fixes the following issues: Changes in rabbitmq-server: Update to 4.1.5: Highlights - Khepri, an alternative schema data store developed to replace Mnesia, has matured and is now fully supported it previously was an experimental feature - AMQP 1.0 is now a core...

Azure Linux 3.0 Security Update: kernel (CVE-2025-38115)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-38115 advisory. - In the Linux kernel, the following vulnerability has been resolved: netsched: schsfq: fix a potential crash ...

CVE-2026-22976 net/sched: sch_qfq: Fix NULL deref when deactivating inactive aggregate in qfq_reset

In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: Fix NULL deref when deactivating inactive aggregate in qfqreset qfqclass-leafqdisc-q.qlen 0 does not imply that the class itself is active. Two qfqclass objects may point to the same leafqdisc. This happens whe...

CLSA-2026-1768824748 kernel: Fix of 7 CVEs

fs/proc: fix uaf in procreaddirde CVE-2025-40271 - fs: fix UAF/GPF bug in nilfsmdtdestroy CVE-2022-2978 - Bluetooth: L2CAP: fix "bad unlock balance" in l2capdisconnectrsp CVE-2023-53297 - net: sched: sfb: fix null pointer access issue when sfbinit fails CVE-2022-50356 - ALSA: usb-audio: Fix size...

CVE-2025-71073

In the Linux kernel, the following vulnerability has been resolved: Input: lkkbd - disable pending work before freeing device lkkbdinterrupt schedules lk-tq via schedulework, and the work handler lkkbdreinit dereferences the lkkbd structure and its serio/inputdev fields. lkkbddisconnect and error...

CVE-2026-22535

CVE-2026-22535 concerns an attacker with network access and valid credentials who can write to the server topics that control MQTT communications due to unencrypted MQTT protocol. The issue is described across multiple feeds (Red Hat, NVD, CIRCL, CVE lists, EUVD/ENISA, CNNVD, etc.) as a vulnerabi...

PT-2026-4661

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel’s networking scheduler, specifically within the sch qfq Stochastic Fairness Queueing component. The qfq change class function contains an error that can...

PT-2026-27705

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw in the networking subsystem related to traffic queue management. Specifically, a race condition can occur between qdisc reset all tx gt and the dequeue...

CVE-2022-50833

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: use hdev-workqueue when queuing hdev-cmd,ncmdtimer works syzbot is reporting attempt to schedule hdev-cmdwork work from systemwq WQ into hdev-workqueue WQ which is under draining operation 1, for commit c8efcc2589464ac...

CVE-2022-50833 Bluetooth: use hdev->workqueue when queuing hdev->{cmd,ncmd}_timer works

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: use hdev-workqueue when queuing hdev-cmd,ncmdtimer works syzbot is reporting attempt to schedule hdev-cmdwork work from systemwq WQ into hdev-workqueue WQ which is under draining operation 1, for commit c8efcc2589464ac...

sch_hfsc: make hfsc_qlen_notify() idempotent

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December 18, 2025—KB5074979 (Monthly Rollup) Out-of-band

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December 18, 2025—KB5074977 (Monthly Rollup) Out-of-band

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Man-In-The-Middle (MITM) Attack

MQTT is vulnerable to a Man-in-the-Middle MITM attack. The vulnerability is due to missing hostname verification by default, which allows an attacker to intercept and manipulate communication between clients and servers...