CVE-2025-40081

CVE-2025-40081 affects the Linux kernel perf subsystem for ARM (arm_spe). The issue is an overflow in PERF_IDX2OFF() when handling large AUX buffers, mitigated by casting nr_pages to unsigned long. The vulnerability is fixed in updated kernels referenced by multiple advisories (e.g., ALAS2KERNEL-...

CVE-2025-40081 perf: arm_spe: Prevent overflow in PERF_IDX2OFF()

In the Linux kernel, the following vulnerability has been resolved: perf: armspe: Prevent overflow in PERFIDX2OFF Cast nrpages to unsigned long to avoid overflow when handling large AUX buffer sizes = 2 GiB...

CVE-2025-40081

In the Linux kernel, the following vulnerability has been resolved: perf: armspe: Prevent overflow in PERFIDX2OFF Cast nrpages to unsigned long to avoid overflow when handling large AUX buffer sizes = 2 GiB...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from a failure to convert nrpages to an unsigned long type, which could lead to an overflow in the PERFIDX2OFF...