EUVD-2026-64557

In the Linux kernel, the following vulnerability has been resolved: net/sched: actgact, actpolice: range check the fallback control action tcfactioncheckctrlact range checks the primary control action: if !opcode ret = action TCACTVALUEMAX ? -EINVAL : 0; TCACTVALUEMAX is TCACTTRAP, so...

CVE-2026-74620

This Linux kernel vulnerability affects the net/sched subsystem, specifically the act_gact and act_police traffic control actions. The fallback control actions (TCA_GACT_PROB.paction and TCA_POLICE_RESULT) bypass the range check in tcf_action_check_ctrlact(), allowing user space to store TC_ACT_C...

kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle

A flaw was found in the Linux kernel's traffic control TC classifier application programming interface API. The tcfqeventhandle function does not properly handle a consumed socket buffer skb when it is processed by the defragmentation engine. This can lead to a Use-After-Free UAF vulnerability,...

CVE-2026-74382

A flaw was found in the Linux kernel's clsbpf component, which handles traffic control filtering. A local attacker could exploit this vulnerability by triggering a specific sequence of failures during an offload rollback operation. This leads to an unbounded recursion, causing a stack overflow an...

kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle

A flaw was found in the Linux kernel's traffic control TC classifier application programming interface API. The tcfqeventhandle function does not properly handle a consumed socket buffer skb when it is processed by the defragmentation engine. This can lead to a Use-After-Free UAF vulnerability,...

kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle

A flaw was found in the Linux kernel's traffic control TC classifier application programming interface API. The tcfqeventhandle function does not properly handle a consumed socket buffer skb when it is processed by the defragmentation engine. This can lead to a Use-After-Free UAF vulnerability,...

kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle

A flaw was found in the Linux kernel's traffic control TC classifier application programming interface API. The tcfqeventhandle function does not properly handle a consumed socket buffer skb when it is processed by the defragmentation engine. This can lead to a Use-After-Free UAF vulnerability,...

kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle

A flaw was found in the Linux kernel's traffic control TC classifier application programming interface API. The tcfqeventhandle function does not properly handle a consumed socket buffer skb when it is processed by the defragmentation engine. This can lead to a Use-After-Free UAF vulnerability,...

kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle

A flaw was found in the Linux kernel's traffic control TC classifier application programming interface API. The tcfqeventhandle function does not properly handle a consumed socket buffer skb when it is processed by the defragmentation engine. This can lead to a Use-After-Free UAF vulnerability,...

kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle

A flaw was found in the Linux kernel's traffic control TC classifier application programming interface API. The tcfqeventhandle function does not properly handle a consumed socket buffer skb when it is processed by the defragmentation engine. This can lead to a Use-After-Free UAF vulnerability,...

CVE-2026-72344

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: TC, skip peer flow cleanup when LAG seq is unavailable mlx5laggetdevseq will return error when the peer isn't in the LAG or when no device is marked as master. Result bad memory access and kernel crash1. Hence, skip th...

EUVD-2026-59529

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

CVE-2026-74284 net/sched: sch_hfsc: Don't make class passive twice

In the Linux kernel, the following vulnerability has been resolved: net/sched: schhfsc: Don't make class passive twice updatevf is called from two places for the same class during a single dequeue when the class's child qdisc e.g. codel/fqcodel drops its last packets while dequeuing: 1. The child...

CVE-2026-72344 net/mlx5e: TC, skip peer flow cleanup when LAG seq is unavailable

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: TC, skip peer flow cleanup when LAG seq is unavailable mlx5laggetdevseq will return error when the peer isn't in the LAG or when no device is marked as master. Result bad memory access and kernel crash1. Hence, skip th...

CVE-2026-72344 net/mlx5e: TC, skip peer flow cleanup when LAG seq is unavailable

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: TC, skip peer flow cleanup when LAG seq is unavailable mlx5laggetdevseq will return error when the peer isn't in the LAG or when no device is marked as master. Result bad memory access and kernel crash1. Hence, skip th...

CVE-2026-72344

Summary: CVE-2026-72344 affects the Linux kernel mlx5e features for TC offloads. The issue occurs when cleaning up peer flows in a Link Aggregation Group (LAG) if the peer is not in the LAG or no master is marked, causing mlx5_lag_get_dev_seq() to return an error, which can lead to bad memory acc...

CVE-2026-68441

A flaw was found in the Linux kernel's networking scheduler net/sched. When a Traffic Control TC filter, configured with an eBPF program or actbpf action, attempts to redirect a packet, the redirection is silently ignored. This causes the packet to be processed normally instead of being redirecte...

CVE-2026-68441

In the Linux kernel, the following vulnerability has been resolved: net/sched: Handle TCACTREDIRECT from qdisc filter chains When a TC filter attached to a qdisc filter chain returns TCACTREDIRECT ex: via an eBPF program calling bpfredirect or an actbpf action, the redirect was silently lost i.e ...

UBUNTU-CVE-2026-68377

In the Linux kernel, the following vulnerability has been resolved: net/sched: acttunnelkey: Defer dstrelease to RCU callback Fix a race-condition use-after-free in tunnelkeyreleaseparams. The function releases the metadatadst of the old params synchronously via dstrelease while deferring the...

CVE-2026-68138

In the Linux kernel, the following vulnerability has been resolved: net/sched: serialize qdiscrtablist against concurrent get/put qdiscgetrtab and qdiscputrtab mutate the process-global singly linked list qdiscrtablist and a plain non-atomic 'int refcnt' with no lock. This was only safe because...