EUVD-2026-48918

In the Linux kernel, the following vulnerability has been resolved: sched/rt: Have RTPUSHIPI be default off for non PREEMPTRT RT migration is done aggressively. When a CPU schedules out a high priority RT task for a lower priority task, it will look to see if there's any RT tasks that are waiting...

DEBIAN-CVE-2026-64250

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Report dying CPU to RCU in stopthiscpu This is a port of MIPS commit 9f3f3bdc6d9dac1 "MIPS: smp: report dying CPU to RCU in stopthiscpu". smpsendstop parks all secondary CPUs in stopthiscpu. And the function marks the...

DEBIAN-CVE-2026-64211

In the Linux kernel, the following vulnerability has been resolved: srcu: Don't queue workqueue handlers to never-online CPUs While an srcustruct structure is in the midst of switching from CPU-0 to all-CPUs state, it can attempt to invoke callbacks for CPUs that have never been online. Worse yet...

CVE-2026-64211

In the Linux kernel, the following vulnerability has been resolved: srcu: Don't queue workqueue handlers to never-online CPUs While an srcustruct structure is in the midst of switching from CPU-0 to all-CPUs state, it can attempt to invoke callbacks for CPUs that have never been online. Worse yet...

EUVD-2026-48619

In the Linux kernel, the following vulnerability has been resolved: srcu: Don't queue workqueue handlers to never-online CPUs While an srcustruct structure is in the midst of switching from CPU-0 to all-CPUs state, it can attempt to invoke callbacks for CPUs that have never been online. Worse yet...

CVE-2026-64211

The CVE-2026-64211 entry concerns the Linux kernel, specifically Tree SRCU behavior during CPU online/offline transitions. The concrete issue is that, while an srcu_struct is switching to an all-CPUs state, callbacks could be invoked for CPUs that have never been online or may never come online (...

CVE-2026-64211 srcu: Don't queue workqueue handlers to never-online CPUs

In the Linux kernel, the following vulnerability has been resolved: srcu: Don't queue workqueue handlers to never-online CPUs While an srcustruct structure is in the midst of switching from CPU-0 to all-CPUs state, it can attempt to invoke callbacks for CPUs that have never been online. Worse yet...

PT-2026-64326

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Sleepable Read-Copy Update SRCU mechanism where an srcu struct structure, while transitioning from CPU-0 to all-CPUs state, may attempt to invoke callbacks on CPUs...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: sched/deadline: Only the freecpus field is set for online runqueues. Commit 16b269436b72 “sched/deadline: Modified cpudl::freecpus to reflect rd-online“” introduced the cpudlset/clearfreecpu functions, allowing the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: powerpc/kexec: Enable SMT before waking offline CPUs. If SMT is disabled or a partial SMT state is enabled, when a new kernel image is loaded for kexec, the following warning is observed upon reboot: kexec: Waking offline CPU 228...

CVE-2026-53354 arm64: errata: Mitigate TLBI errata on various Arm CPUs

In the Linux kernel, the following vulnerability has been resolved: arm64: errata: Mitigate TLBI errata on various Arm CPUs A number of CPUs developed by Arm suffer from errata whereby a broadcast TLBI;DSB sequence may complete before the global observation of writes which are translated by an...

CVE-2026-53187

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Validate cpuid against nrcpuids in DMAH alloc The cpuid attribute supplied by user space through UVERBSATTRALLOCDMAHCPUID is passed directly to cpumasktestcpu without first verifying that the value is within the valid...

CVE-2026-53187

The CVE-2026-53187 issue affects the Linux kernel RDMA/core: the cpu_id supplied via UVERBS_ATTR_ALLOC_DMAH_CPU_ID is passed to cpumask_test_cpu() without validating it against nr_cpu_ids, leading to an out-of-bounds read of the cpumask bitmap. On kernels built with CONFIG_DEBUG_PER_CPU_MAPS this...

CVE-2026-53187 RDMA/core: Validate cpu_id against nr_cpu_ids in DMAH alloc

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Validate cpuid against nrcpuids in DMAH alloc The cpuid attribute supplied by user space through UVERBSATTRALLOCDMAHCPUID is passed directly to cpumasktestcpu without first verifying that the value is within the valid...

EUVD-2026-39278

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Validate cpuid against nrcpuids in DMAH alloc The cpuid attribute supplied by user space through UVERBSATTRALLOCDMAHCPUID is passed directly to cpumasktestcpu without first verifying that the value is within the valid...

CVE-2026-53187

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Validate cpuid against nrcpuids in DMAH alloc The cpuid attribute supplied by user space through UVERBSATTRALLOCDMAHCPUID is passed directly to cpumasktestcpu without first verifying that the value is within the valid...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: sched/core: Do not requeue tasks on CPUs excluded from cpusmask. The following warning was triggered on a large machine during boot time in a distribution kernel; the same issue should also affect the mainline version of the...

Fedora 44 : kernel (2026-8b619eef6f)

The remote Fedora 44 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-8b619eef6f advisory. The 7.0.12-101/201 updates contain fixes for CVE-2025-10263. This CVE, while important, only impacts specific aarch64 CPUs. Tenable has extracted the precedi...

Security update for xen

This update for xen fixes the following issues CVE-2025-54505: Floating Point Divider State Sampling on AMD CPUs AMD-SN-7053 bsc1262428. CVE-2025-54518: AMD-SN-7052: CPU OP Cache Corruption bsc1264066. CVE-2026-23557: Xenstored DoS via XSRESETWATCHES command bsc1262178. CVE-2026-23558: grant tabl...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from issues with the pkvminitvcpu function in KVM arm64. These issues involve pin leakage and ordering...