Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

kernel: net/sched: act_api: use RCU with deferred freeing for action lifecycle

A flaw was found in the Linux kernel's networking scheduler. A race condition, which is a problem that occurs when multiple operations try to access the same resource at the same time, exists when network filter operations are run concurrently. This can lead to a Use-After-Free UAF vulnerability,...

kernel: net/sched: act_api: use RCU with deferred freeing for action lifecycle

A flaw was found in the Linux kernel's networking scheduler. A race condition, which is a problem that occurs when multiple operations try to access the same resource at the same time, exists when network filter operations are run concurrently. This can lead to a Use-After-Free UAF vulnerability,...

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...

Important: Red Hat Security Advisory: kernel security, bug fix, and enhancement update

An update for kernel is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

kernel: net/sched: act_api: use RCU with deferred freeing for action lifecycle

A flaw was found in the Linux kernel's networking scheduler. A race condition, which is a problem that occurs when multiple operations try to access the same resource at the same time, exists when network filter operations are run concurrently. This can lead to a Use-After-Free UAF vulnerability,...

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 ...

CVE-2026-68441 net/sched: Handle TC_ACT_REDIRECT from qdisc filter chains

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 ...

EUVD-2026-57049

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 ...

CVE-2026-68441 net/sched: Handle TC_ACT_REDIRECT from qdisc filter chains

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 ...

CVE-2026-68441

The CVE-2026-68441 issue affects the Linux kernel net/sched path where TC_ACT_REDIRECT from qdisc filter chains could be lost and the packet redirected was silently dropped instead of being redirected. A fix adds a tcf_classify_qdisc() inline helper wrapping tcf_classify() to convert a TC_ACT_RED...

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-2026-68377

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...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net/sched: actskbedit: fix divide-by-zero in tcfskbedithash Commit 38a6f0865796 “net: sched: support hash selecting tx queue” added support for SKBEDITFTXQSKBHASH. The inclusive range size is computed as follows: mappingmod =...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsu32: use skbheaderpointercareful skbheaderpointer does not fully validate negative @offset values. Use skbheaderpointercareful instead. GangMin Kim provided a report and a reproduction example for u32classify: Bug:...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net/sched: ets: Always remove the class from the active list before deleting it in etsqdiscchange. The vulnerability is a race condition between etsqdiscdequeue and etsqdiscchange. This causes a Use-After-Freeze UAF error on the...

Linux Distros Unpatched Vulnerability : CVE-2026-68377

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/sched: acttunnelkey: Defer dstrelease to RCU callback Fix a race-condition use-after-free in tunnelkeyreleaseparams. The function releases the metadatadst o...

Linux Distros Unpatched Vulnerability : CVE-2026-68138

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/sched: serialize qdiscrtablist against concurrent get/put qdiscgetrtab and qdiscputrtab mutate the process-global singly linked list qdiscrtablist and a pla...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: net/sched: Fixed a issue where partial COW operations by pedit led to corruption of the page cache. tcfpeditact calculates the COW range for skbensurewritable once before the key loop, using tcfpoffmaxhint. However, this hint...

Oracle Linux 8 / 9 : Unbreakable Enterprise kernel (ELSA-2026-500137)

The remote Oracle Linux 8 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-500137 advisory. - KVM: x86: Check for invalid/obsolete root after making MMU pages available Sean Christopherson Orabug: 39832946 CVE-2026-64561 - x86/bugs: Make...