PT-2026-116661

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A Use-After-Free UAF issue exists in the net/sched: act ct component. This occurs when a raw pointer to the extensions area is added to the expectations list during the execution of nf c...

PT-2026-116841

In the Linux kernel, the following vulnerability has been resolved: net/sched: act ct: don't WARN on benign flow offload alloc failure flow offload alloc returns NULL when the conntrack entry is dying e.g. raced with a conntrack flush or when the GFP ATOMIC allocation fails; both are expected und...

Linux Distros Unpatched Vulnerability : CVE-2026-98811

"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: reclaim an empty proto on the error path Two racing tc filter add requests on the same chain/prio of an unlocked classifier both run change ...

CVE-2026-98622: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/sched: actct: don't WARN on benign flowoffloadalloc failure flowoffloadalloc returns NULL when the conntrack entry is dying e.g. raced with a conntrack flush or when the GFPATOMIC allocation fails; both are expected under loa...

PT-2026-116660

In the Linux kernel, the following vulnerability has been resolved: net/sched: act ct: avoid modifying shared unconfirmed ct entry In a case where skb with an unconfirmed ct entry gets cloned, we may end up processing both again but with different sets of extensions. The series of events: 1. The...

PT-2026-116803

In the Linux kernel, the following vulnerability has been resolved: net/sched: fix potential stack infoleak in em text dump em text dump allocates struct tcf em text on the stack without zeroing it. strscpy writes the algorithm name and a NUL terminator into conf.algo, leaving the remaining bytes...

PT-2026-116848

In the Linux kernel, the following vulnerability has been resolved: net/sched: cls u32: fix manual hash table handle IDR aliasing A u32 hash table created with an explicit handle 'tc filter add ... handle 801: u32 divisor N' keys its IDR entry on the raw handle, while the destroy paths free it...

CVE-2026-98610: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/sched: schhfsc: bound the classify inner-filter walk with a drift budget hfscclassify applies the "filter may only point downwards" level check only when the filter result carries no bound class. A filter created with a flowi...

Linux Kernel Security Vulnerabilities

The Linux kernel version 5.7 contains a security vulnerability. This vulnerability arises from the actct in net/sched, which triggers a WARN when flowoffloadalloc returns NULL due to the disappearance of conntrack entries or a failure in GFPATOMIC allocation. This could allow non-privileged users...

Linux Kernel Security Vulnerabilities

Versions of the Linux kernel from 6.1.119 to 6.1.189, from 6.6.63 to 6.6.158, from 6.11.10 to 6.12, and version 6.12 contain security vulnerabilities. The vulnerability stems from inconsistent IDR key fields in the manual hashtable handles in net/sched clsu32. Hashtables created with an explicit...

RLSA-2026:83207 Important: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: netfilter: nfnetlinkqueue: do shared-unconfirmed check before segmentation CVE-2026-45859 kernel: net/sched: actct: Only release RCU read lock after ctft CVE-2026-46319 kernel: net/sched:...

RLSA-2026:83156 Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: net/sched: actct: Only release RCU read lock after ctft CVE-2026-46319 kernel: net/sched: taprio: fix use-after-free in advancesched on schedule switch CVE-2026-53011 kernel: wifi:...

Linux sch_codel CVE

The vulnerability of the net/sched/schcodel.c component in the Linux operating system is related to the implementation of an incorrect control flow. Exploiting this vulnerability could allow a remote attacker to compromise the confidentiality, integrity, and accessibility of the protected...

Linux net/sched/cls_flow.c Data Compromise

The vulnerability in the net/sched/clsflow.c component of the Linux operating system relates to the disclosure of information during data transmission. Exploiting this vulnerability could allow an attacker to compromise the confidentiality of the protected information...

Linux net/sched/sch_hfsc.c Heap Buffer Overflow DoS

The vulnerability of the updatevf function in the net/sched/schhfsc.c component of the Linux kernel is related to the implementation of an incorrect control flow. Exploiting this vulnerability could allow an attacker to cause a service failure...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: In the net/sched module, there is a issue where sfq: clamping the quantum value can lead to a signed overflow condition, causing a soft lockup. The sfqinit function sets q-quantum to pschedmtuqdiscdevsch unsigned. A device with a...

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

In the Linux kernel, the following vulnerability has been resolved: net/sched: schsfb: Replace the direct dequeue call with peek and qdiscdequeuepeeked. When sfb has children e.g., qfq qdisc whose peek callback is qdiscpeekdequeued, we could encounter a kernel panic. When the parent of such qdisc...

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

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsbpf: prevents unbounded recursion in offload rollback Quan Sun reported 1 a stack overflow in clsbpfoffloadcmd. Reproducer on netdevsim: added a skipsw clsbpf filter, set the bpftcaccept debugfs knob to 0, then used...

kernel: net/sched: taprio: fix use-after-free in advance_sched() on schedule switch

A flaw was found in the Linux kernel's networking scheduler, specifically within the taprio module. When the system attempts to switch schedules, a use-after-free vulnerability occurs in the advancesched function. This happens because a pointer to an old schedule entry is still used after the...

kernel: net/sched: act_ct: Only release RCU read lock after ct_ft

A flaw was found in the Linux kernel. A race condition in the actct module, specifically during the flow table lookup, can lead to a Use-After-Free UAF vulnerability. This occurs because a critical lock is released prematurely, allowing a memory object to be freed while still in use. An attacker...