CVE-2025-68325

CVE-2025-68325 schcake doesn't consider the case when cakeenqueue returns a non-null result, leading to the imbalanced qlen in the qdisc tree, triggering null-deref in its parent sched, e.g., qfq. Affected Versions Fixed at v6.19-rc1 Severity Low Patch In cakedrop, qdisctreereducebacklog is used ...

kernel: Linux kernel: Denial of Service in QFQ scheduler via child qlen manipulation

A flaw was found in the Linux kernel's Quick Fair Queuing QFQ scheduler. The QFQ class deactivation logic incorrectly relies on a child qdisc's queue length qlen to determine if a class is active. A local user with CAPNETADMIN capabilities can manipulate the child qlen into an unexpected state...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: - In the net:sched section, there is a fix for the order of qlen adjustment. - Changes to sch-q.qlen related to qdisctreereducebacklog need to occur before a call to that function. Otherwise, it may fail to notify the parent...

kernel: Linux kernel: Denial of Service in QFQ scheduler via child qlen manipulation

A flaw was found in the Linux kernel's Quick Fair Queuing QFQ scheduler. The QFQ class deactivation logic incorrectly relies on a child qdisc's queue length qlen to determine if a class is active. A local user with CAPNETADMIN capabilities can manipulate the child qlen into an unexpected state...

Linux Distros Unpatched Vulnerability : CVE-2026-80630

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/sched: schfqcodel: Do not call qdisctreereducebacklog during peek before restoring qlen Whenever fqcodel drops packets during peek, it calls...

SUSE CVE-2026-80630

In the Linux kernel, the following vulnerability has been resolved: net/sched: schfqcodel: Do not call qdisctreereducebacklog during peek before restoring qlen Whenever fqcodel drops packets during peek, it calls qdisctreereducebacklog. An issue arises because it calls qdisctreereducebacklog befo...

CVE-2026-80630

In the Linux kernel, the following vulnerability has been resolved: net/sched: schfqcodel: Do not call qdisctreereducebacklog during peek before restoring qlen Whenever fqcodel drops packets during peek, it calls qdisctreereducebacklog. An issue arises because it calls qdisctreereducebacklog befo...

UBUNTU-CVE-2026-80630

In the Linux kernel, the following vulnerability has been resolved: net/sched: schfqcodel: Do not call qdisctreereducebacklog during peek before restoring qlen Whenever fqcodel drops packets during peek, it calls qdisctreereducebacklog. An issue arises because it calls qdisctreereducebacklog befo...

CVE-2026-80630

In the Linux kernel, the following vulnerability has been resolved: net/sched: schfqcodel: Do not call qdisctreereducebacklog during peek before restoring qlen Whenever fqcodel drops packets during peek, it calls qdisctreereducebacklog. An issue arises because it calls qdisctreereducebacklog befo...

EUVD-2026-67506

In the Linux kernel, the following vulnerability has been resolved: net/sched: schfqcodel: Do not call qdisctreereducebacklog during peek before restoring qlen Whenever fqcodel drops packets during peek, it calls qdisctreereducebacklog. An issue arises because it calls qdisctreereducebacklog befo...

CVE-2026-80630

In the Linux kernel, the following vulnerability has been resolved: net/sched: schfqcodel: Do not call qdisctreereducebacklog during peek before restoring qlen Whenever fqcodel drops packets during peek, it calls qdisctreereducebacklog. An issue arises because it calls qdisctreereducebacklog befo...

CVE-2026-80630

CVE-2026-80630 is a vulnerability in the Linux kernel's fq_codel traffic control qdisc (net/sched/sch_fq_codel). During the peek operation, the code calls qdisc_tree_reduce_backlog before reincrementing qlen. If qlen momentarily drops to zero while peek still returns a packet, the parent qdisc's ...

PT-2026-82930

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the sch fq codel scheduler where qdisc tree reduce backlog is called during a peek operation before the qlen variable is restored. If qlen drops to zero while the peek...

SUSE CVE-2026-74696

In the Linux kernel, the following vulnerability has been resolved: tcp: fix TFO maxqlen accounting across reuseport migration A listener's TCPFASTOPEN maxqlen stops being accurate and lets through far more pending Fast Open requests than it was configured for. This only shows up with SOREUSEPORT...

SUSE CVE-2026-74266

In the Linux kernel, the following vulnerability has been resolved: net/sched: schdualpi2: Do not call qdisctreereducebacklog during peek before restoring qlen Whenever dualpi2 drops packets during peek, it calls qdisctreereducebacklog. An issue arises because it calls qdisctreereducebacklog befo...

SUSE CVE-2026-74267

In the Linux kernel, the following vulnerability has been resolved: net/sched: schcodel: Do not call qdisctreereducebacklog during peek before restoring qlen Whenever codel drops packets during peek, it calls qdisctreereducebacklog. An issue arises because it calls qdisctreereducebacklog before i...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-099010)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-099010 advisory. 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 o...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-104615)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-104615 advisory. In the Linux kernel, the following vulnerability has been resolved: net/sched: schcodel: Do not call qdisctreereducebacklog during peek before restoring qlen Wheneve...

UBUNTU-CVE-2026-74266

In the Linux kernel, the following vulnerability has been resolved: net/sched: schdualpi2: Do not call qdisctreereducebacklog during peek before restoring qlen Whenever dualpi2 drops packets during peek, it calls qdisctreereducebacklog. An issue arises because it calls qdisctreereducebacklog befo...

CVE-2026-74266 net/sched: sch_dualpi2: Do not call qdisc_tree_reduce_backlog during peek before restoring qlen

In the Linux kernel, the following vulnerability has been resolved: net/sched: schdualpi2: Do not call qdisctreereducebacklog during peek before restoring qlen Whenever dualpi2 drops packets during peek, it calls qdisctreereducebacklog. An issue arises because it calls qdisctreereducebacklog befo...