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

In the Linux kernel, the following vulnerability has been resolved: net/sched: It is enforced that teql can only be used as a root qdisc. The design intent of teql is that it is only supposed to be used as a root qdisc. Therefore, we need to ensure this constraint is respected. Although not very...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the net/sched/schcbq.c file of the Linux kernel, from version 6.1.4 onwards, cbqclassify allows attackers to cause a denial of service due to type confusion. Non-negative numbers can sometimes indicate a TCACTSHOT condition, rather than valid classification results, leading to improper...

SUSE CVE-2026-74594

In the Linux kernel, the following vulnerability has been resolved: sched/psi: Shut down rtpolltimer in psicgroupfree psischedulertpollwork is called locklessly from the scheduler hotpath and can race psitriggerdestroy taking down the last rtpoll trigger under rtpolltriggerlock:...

AZL-97050 CVE-2026-74704 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: net/sched: schcake: drop WARNON1 for malformed packets in ACK filter The schcake ACK filter parses packets to find the TCP header and filter duplicated ACKs if the flow is backlogged. The parsing code contains a WARNON1 which can...

AZL-97244 CVE-2026-74700 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsapi: Always acquire rtnllock when destroying locked classifiers Another challenge with unlocked filters. There is a short window in tcnewtfilter where a tcfproto can be found and briefly referenced by a totally...

AZL-97095 CVE-2026-74663 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: net/sched: reject overly deep qdisc hierarchies Deep qdisc hierarchies can lead to excessive recursion in qdisc tree walkers and exhaust the kernel stack. The existing loop check does not cover the create-and-graft path, so a...

CVE-2026-74663

In the Linux kernel, the following vulnerability has been resolved: net/sched: reject overly deep qdisc hierarchies Deep qdisc hierarchies can lead to excessive recursion in qdisc tree walkers and exhaust the kernel stack. The existing loop check does not cover the create-and-graft path, so a...

AZL-97080 CVE-2026-74621 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: net/sched: actct: fix skbuff leak when the header checks reject a packet tcfcthandlefragments runs its header sanity checks before handing anything to the defragmentation engine: if family == NFPROTOIPV4 err =...

CVE-2026-74663 net/sched: reject overly deep qdisc hierarchies

In the Linux kernel, the following vulnerability has been resolved: net/sched: reject overly deep qdisc hierarchies Deep qdisc hierarchies can lead to excessive recursion in qdisc tree walkers and exhaust the kernel stack. The existing loop check does not cover the create-and-graft path, so a...

CVE-2026-74663

CVE-2026-74663 affects the Linux kernel in the net/sched subsystem. Deep queueing discipline (qdisc) hierarchies can cause excessive recursion in qdisc tree walkers, exhausting the kernel stack and leading to a Denial of Service via system crash. The existing loop check does not cover the create-...

CVE-2026-74621 net/sched: act_ct: fix sk_buff leak when the header checks reject a packet

In the Linux kernel, the following vulnerability has been resolved: net/sched: actct: fix skbuff leak when the header checks reject a packet tcfcthandlefragments runs its header sanity checks before handing anything to the defragmentation engine: if family == NFPROTOIPV4 err =...

CVE-2026-74621

CVE-2026-74621 is an unbounded memory leak in the Linux kernel's net/sched: act_ct (traffic control connection-tracking action). When tcf_ct_handle_fragments() rejects a packet via header sanity checks (returning -EINVAL, -ENOMEM, or -EPROTO), the skb remains owned by the caller, yet tcf_ct_act()...

EUVD-2026-64531

In the Linux kernel, the following vulnerability has been resolved: sched/psi: Shut down rtpolltimer in psicgroupfree psischedulertpollwork is called locklessly from the scheduler hotpath and can race psitriggerdestroy taking down the last rtpoll trigger under rtpolltriggerlock:...

CVE-2026-74594

CVE-2026-74594 affects the Linux kernel's PSI (Pressure Stall Information) subsystem . A race condition exists between psi_schedule_rtpoll_work(), called locklessly from the scheduler hotpath, and psi_trigger_destroy(), which tears down the last rtpoll trigger under lock. The rtpoll_timer can be ...

PT-2026-79736

In the Linux kernel, the following vulnerability has been resolved: sched ext: Skip sub-disable teardown for never-linked sub-schedulers A sub-scheduler enable can fail before scx link sched links the sched into the hierarchy, e.g. when the parent is already being disabled, and cleanup still runs...

Linux Distros Unpatched Vulnerability : CVE-2026-74700

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/sched: clsapi: Always acquire rtnllock when destroying locked classifiers Another challenge with unlocked filters. There is a short window in tcnewtfilter...

Linux Distros Unpatched Vulnerability : CVE-2026-74663

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/sched: reject overly deep qdisc hierarchies Deep qdisc hierarchies can lead to excessive recursion in qdisc tree walkers and exhaust the kernel stack. The...

PT-2026-79626

In the Linux kernel, the following vulnerability has been resolved: net/sched: act ct: fix sk buff leak when the header checks reject a packet tcf ct handle fragments runs its header sanity checks before handing anything to the defragmentation engine: if family == NFPROTO IPV4 err = tcf ct ipv4 i...

Linux Distros Unpatched Vulnerability : CVE-2026-74621

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/sched: actct: fix skbuff leak when the header checks reject a packet tcfcthandlefragments runs its header sanity checks before handing anything to the...

PT-2026-79668

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the network scheduler where overly deep qdisc queueing discipline hierarchies can cause excessive recursion in qdisc tree walkers. This recursion can lead to the...