CVE-2026-53370

In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel: Improve validation and configuration of ACR masks Currently there are several issues on the user space ACR mask validation and configuration. - The validation for user space ACR mask attr.config2 is incomplete,...

CVE-2026-53370

The CVE pertains to the Linux kernel perf/x86/intel ACR mask handling. The issue involves user-space ACR mask validation (attr.config2) allowing invalid indices to slip in, and an early return bug that skipped subsequent ACR groups. The remediation explicitly: determine the event index group for ...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: perf/x86/intel: Fixed an access error when accessing the IA32PMCxCFGB MSRs When running perffuzzer on PTL, sometimes the “unchecked MSR access error” is observed when accessing the IA32PMCxCFGB MSRs. 55.611268 Unchecked MSR...

CVE-2025-40122 perf/x86/intel: Fix IA32_PMC_x_CFG_B MSRs access error

In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel: Fix IA32PMCxCFGB MSRs access error When running perffuzzer on PTL, sometimes the below "unchecked MSR access error" is seen when accessing IA32PMCxCFGB MSRs. 55.611268 unchecked MSR access error: WRMSR to 0x1986...