Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fixed an invalid wait context in ctxschedin Lockdep identified a bug in event scheduling when a pinned event failed, causing threads in the ring buffer to be awakened as follows. It seems that the wait-queue lock shoul...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: sched/deadline: Stop the dlserver function before the CPU goes offline. The IBM CI tool reported a kernel warning1 when performing a CPU removal operation using drmgr2. For example: “drmgr -c cpu -r -q 1”. WARNING: CPU: 0 PID: 0 ...

Linux Distros Unpatched Vulnerability : CVE-2026-43417

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: sched/mmcid: Handle vfork/CLONEVM correctly Matthieu and Jiri reported stalls where a task...

Linux Distros Unpatched Vulnerability : CVE-2026-43392

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - schedext: Fix starvation of scxenable under fair-class saturation During scxenable, the READY - ENABLED task switching loop changes the calling thread's...

CVE-2026-43326

A flaw was found in the Linux kernel, specifically within the schedext component. This vulnerability can lead to a system-wide deadlock, causing a Denial of Service DoS where the system becomes unresponsive. The issue arises when the kernel's scheduling mechanism enters a busy-wait state in a...

CVE-2026-43482 sched_ext: Disable preemption between scx_claim_exit() and kicking helper work

In the Linux kernel, the following vulnerability has been resolved: schedext: Disable preemption between scxclaimexit and kicking helper work scxclaimexit atomically sets exitkind, which prevents scxerror from triggering further error handling. After claiming exit, the caller must kick the helper...

CVE-2026-43482

In the Linux kernel, the following vulnerability has been resolved: schedext: Disable preemption between scxclaimexit and kicking helper work scxclaimexit atomically sets exitkind, which prevents scxerror from triggering further error handling. After claiming exit, the caller must kick the helper...

SUSE CVE-2026-43326

In the Linux kernel, the following vulnerability has been resolved: schedext: Fix SCXKICKWAIT deadlock by deferring wait to balance callback SCXKICKWAIT busy-waits in kickcpusirqworkfn using smpcondloadacquire until the target CPU's kicksync advances. Because the irqwork runs in hardirq context,...

Unbreakable Enterprise kernel security update

6.12.0-202.76.4.2 - net/sched: Only allow actct to bind to clsact/ingress qdiscs and shared blocks Victor Nogueira Orabug: 39361451 CVE-2026-23270 - netfilter: nftables: always walk all pending catchall elements Florian Westphal Orabug: 39361449 CVE-2026-23278 - nfsd: fix heap overflow in NFSv4.0...

Linux Distros Unpatched Vulnerability : CVE-2026-43438

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - schedext: Remove redundant cssput in scxcgroupinit The iterator cssforeachdescendantpre walks the cgroup hierarchy under cgrouplock. It does not increment the...

SUSE SLES15 Security Update : kernel (Live Patch 0 for SUSE Linux Enterprise 15 SP7) (SUSE-SU-2026:1725-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1725-1 advisory. This update for the SUSE Linux Enterprise kernel 6.4.0-150700.51 fixes various security issues The following security issues were fixed: -...

CVE-2026-43438

A flaw was found in the Linux kernel's schedext component. This vulnerability is caused by a redundant cssput call in the scxcgroupinit function, leading to a reference count underflow. This can result in a Use-After-Free UAF vulnerability, potentially allowing a local attacker to cause a denial ...

CVE-2026-43392

A flaw was found in the schedext component of the Linux kernel. This vulnerability allows a local attacker to cause a system hang by exploiting an issue in the scxenable function. The function's task switching loop can lead to indefinite starvation of the enable thread when higher-priority...

EUVD-2026-28698

In the Linux kernel, the following vulnerability has been resolved: schedext: Fix starvation of scxenable under fair-class saturation During scxenable, the READY - ENABLED task switching loop changes the calling thread's schedclass from fair to ext. Since fair has higher priority than ext,...

EUVD-2026-28607

In the Linux kernel, the following vulnerability has been resolved: sched/fair: Fix zerovruntime tracking fix John reported that stress-ng-yield could make his machine unhappy and managed to bisect it to commit b3d99f43c72b "sched/fair: Fix zerovruntime tracking". The combination of yield and tha...

CVE-2026-43392

In the Linux kernel, the following vulnerability has been resolved: schedext: Fix starvation of scxenable under fair-class saturation During scxenable, the READY - ENABLED task switching loop changes the calling thread's schedclass from fair to ext. Since fair has higher priority than ext,...

CVE-2026-43417

In the Linux kernel, the following vulnerability has been resolved: sched/mmcid: Handle vfork/CLONEVM correctly Matthieu and Jiri reported stalls where a task endlessly loops in mmgetcid when scheduling in. It turned out that the logic which handles vfork'ed tasks is broken. It is invoked when th...

CVE-2026-43438 sched_ext: Remove redundant css_put() in scx_cgroup_init()

In the Linux kernel, the following vulnerability has been resolved: schedext: Remove redundant cssput in scxcgroupinit The iterator cssforeachdescendantpre walks the cgroup hierarchy under cgrouplock. It does not increment the reference counts on yielded css structs. According to the cgroup...

CVE-2026-43418

CVE-2026-43418 describes a race in the Linux kernel sched/mmcid subsystem: when new tasks are created concurrently, a newly forked task is counted as an MMCID user before it is visible in thread and task lists, which can lead to an incorrect CID allocation and potentially a machine stall. The mit...

CVE-2026-43418 sched/mmcid: Prevent CID stalls due to concurrent forks

In the Linux kernel, the following vulnerability has been resolved: sched/mmcid: Prevent CID stalls due to concurrent forks A newly forked task is accounted as MMCID user before the task is visible in the process' thread list and the global task list. This creates the following problem: CPU1 CPU2...