CVE-2025-38055

In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel: Fix segfault with PEBS-via-PT with samplefreq Currently, using PEBS-via-PT with a sample frequency instead of a sample period, causes a segfault. For example: BUG: kernel NULL pointer dereference, address:...

CVE-2025-38055 perf/x86/intel: Fix segfault with PEBS-via-PT with sample_freq

In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel: Fix segfault with PEBS-via-PT with samplefreq Currently, using PEBS-via-PT with a sample frequency instead of a sample period, causes a segfault. For example: BUG: kernel NULL pointer dereference, address:...

CVE-2025-38055

CVE-2025-38055 affects the Linux kernel (perf/x86/intel) where PEBS-via-PT with a sample_freq could trigger a NULL pointer dereference due to intel_pmu_pebs_event_update_no_drain() misinterpreting pebs_enabled bits as counter indexes. The issue arises when bits 60/61 are set for PEBS-via-PT, and ...