CVE-2026-23342

A flaw was found in the Linux kernel. On systems configured with PREEMPTRT, a race condition exists within the Berkeley Packet Filter BPF cpumap functionality. This flaw allows a local attacker to trigger concurrent access to the xdpbulkqueue. Successful exploitation can lead to a kernel crash,...

EUVD-2026-15309

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix race in cpumap on PREEMPTRT On PREEMPTRT kernels, the per-CPU xdpbulkqueue bq can be accessed concurrently by multiple preemptible tasks on the same CPU. The original code assumes bqenqueue and cpumapflush run atomically...

CVE-2026-23342

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix race in cpumap on PREEMPTRT On PREEMPTRT kernels, the per-CPU xdpbulkqueue bq can be accessed concurrently by multiple preemptible tasks on the same CPU. The original code assumes bqenqueue and cpumapflush run atomically...

CVE-2026-23342

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix race in cpumap on PREEMPTRT On PREEMPTRT kernels, the per-CPU xdpbulkqueue bq can be accessed concurrently by multiple preemptible tasks on the same CPU. The original code assumes bqenqueue and cpumapflush run atomically...

CVE-2026-23342

CVE-2026-23342 describes a race in the Linux kernel’s PREEMPT_RT path for BPF cpumap/xdp_bulk_queue. The issue arises when bq_enqueue() and __cpu_map_flush() run concurrently on the same CPU, breaking assumptions about atomicity and enabling races such as double __list_del_clearprev() and concurr...

CVE-2026-23342

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix race in cpumap on PREEMPTRT On PREEMPTRT kernels, the per-CPU xdpbulkqueue bq can be accessed concurrently by multiple preemptible tasks on the same CPU. The original code assumes bqenqueue and cpumapflush run atomically...

CVE-2026-23342 bpf: Fix race in cpumap on PREEMPT_RT

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix race in cpumap on PREEMPTRT On PREEMPTRT kernels, the per-CPU xdpbulkqueue bq can be accessed concurrently by multiple preemptible tasks on the same CPU. The original code assumes bqenqueue and cpumapflush run atomically...

PT-2026-27707

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix race in cpumap on PREEMPT RT On PREEMPT RT kernels, the per-CPU xdp bulk queue bq can be accessed concurrently by multiple preemptible tasks on the same CPU. The original code assumes bq enqueue and cpu map flush run...

Linux kernel 安全漏洞

The Linux kernel is the kernel used by the Linux operating system developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from a race condition in the cpumap structure within the PREEMPTRT kernel. This vulnerability could lead to...

CVE-2026-23342: Concurrent Execution using Shared Resource with Improper Synchronization

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix race in cpumap on PREEMPTRT On PREEMPTRT kernels, the per-CPU xdpbulkqueue bq can be accessed concurrently by multiple preemptible tasks on the same CPU. The original code assumes bqenqueue and cpumapflush run atomically...

OESA-2026-1505 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: bpf, cpumap: Make sure kthread is running before map update returns The following warning was reported when running stress-mode enabled xdpredirectcpu with some ...

OESA-2026-1504 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: bpf, cpumap: Make sure kthread is running before map update returns The following warning was reported when running stress-mode enabled xdpredirectcpu with some ...

Siemens SIMATIC Devices Improper Input Validation (CVE-2024-27431)

In the Linux kernel, the following vulnerability has been resolved: cpumap: Zero-initialise xdprxqinfo struct before running XDP program When running an XDP program that is attached to a cpumap entry, we don't initialise the xdprxqinfo data structure being used in the xdpbuff that backs the XDP...

EUVD-2023-60031

In the Linux kernel, the following vulnerability has been resolved: nvdimm: Fix memleak of pmu attrgroups in unregisternvdimmpmu Memory pointed by 'ndpmu-pmu.attrgroups' is allocated in function 'registernvdimmpmu' and is lost after 'kfreendpmu' call in function 'unregisternvdimmpmu'...

SUSE CVE-2023-53660

In the Linux kernel, the following vulnerability has been resolved: bpf, cpumap: Handle skb as well when clean up ptrring The following warning was reported when running xdpredirectcpu with both skb-mode and stress-mode enabled: ------------ cut here ------------ Incorrect XDP memory type...

UBUNTU-CVE-2023-53660

In the Linux kernel, the following vulnerability has been resolved: bpf, cpumap: Handle skb as well when clean up ptrring The following warning was reported when running xdpredirectcpu with both skb-mode and stress-mode enabled: ------------ cut here ------------ Incorrect XDP memory type...

CVE-2023-53660 bpf, cpumap: Handle skb as well when clean up ptr_ring

In the Linux kernel, the following vulnerability has been resolved: bpf, cpumap: Handle skb as well when clean up ptrring The following warning was reported when running xdpredirectcpu with both skb-mode and stress-mode enabled: ------------ cut here ------------ Incorrect XDP memory type...

CVE-2023-53660: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf, cpumap: Handle skb as well when clean up ptrring The following warning was reported when running xdpredirectcpu with both skb-mode and stress-mode enabled: ------------ cut here ------------ Incorrect XDP memory type...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-380977)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-380977 advisory. In the Linux kernel, the following vulnerability has been resolved: cpumap: Zero-initialise xdprxqinfo struct before running XDP program When running an XDP program...

SUSE CVE-2023-53577

In the Linux kernel, the following vulnerability has been resolved: bpf, cpumap: Make sure kthread is running before map update returns The following warning was reported when running stress-mode enabled xdpredirectcpu with some RT threads: ------------ cut here ------------ WARNING: CPU: 4 PID: ...