CVE-2026-72325

A flaw was found in the Linux kernel's performance monitoring unit PMU for AMD processors. When Secure Virtual Machine SVM is toggled on a CPU with active Last Branch Record LBR events, the system incorrectly attempts to enable Branch Sampling BRS on hardware that does not support it. This...

CVE-2026-72237

A flaw was found in the Linux kernel. A local user can exploit a vulnerability in the perf subsystem on AMD processors utilizing the Branch Sampling BRS feature. This flaw occurs because the software filtering mechanism for branch records only validates the branch-to address, leaving the...

CVE-2026-72325

In the Linux kernel, the following vulnerability has been resolved: perf/x86/amd/core: Avoid enabling BRS from the SVM reload path Branch Sampling BRS and Last Branch Record LBR are mutually exclusive hardware features, and users of both are tracked via cpuc-lbrusers. When SVM is toggled on a CPU...

CVE-2026-72325 perf/x86/amd/core: Avoid enabling BRS from the SVM reload path

In the Linux kernel, the following vulnerability has been resolved: perf/x86/amd/core: Avoid enabling BRS from the SVM reload path Branch Sampling BRS and Last Branch Record LBR are mutually exclusive hardware features, and users of both are tracked via cpuc-lbrusers. When SVM is toggled on a CPU...

Linux Kernel Security Vulnerabilities

The Linux kernel version 5.19 contains a security vulnerability. This vulnerability stems from the incorrect enabling of Branch Sampling BRS in the SVM reloading path. When this occurs on processors that support Last Branch Record LBR but do not support BRS, the deprecated BRS enable bit may be...

PT-2026-72513

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Linux kernel where Branch Sampling BRS and Last Branch Record LBR are treated as mutually exclusive hardware features, both tracked via the cpuc-lbr users variable...

UBUNTU-CVE-2022-49781

In the Linux kernel, the following vulnerability has been resolved: perf/x86/amd: Fix crash due to race between amdpmuenableall, perf NMI and throttling amdpmuenableall does: if !testbitidx, cpuc-activemask continue; amdpmuenableeventcpuc-eventsidx; A perf NMI of another event can come between...