CVE-2026-53114: perf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler
In the Linux kernel, the following vulnerability has been resolved:
perf/amd/ibs: Avoid calling perfallowkernel() from the IBS NMI handler
Calling perfallowkernel() from the NMI context is unsafe and could be fatal. Capture the permission at event-initialization time by storing it in event->hw.flags, and have the NMI handler rely on that cached flag instead of making the call directly.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
For perf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler; capture the permission at event-initialization time by storing it in event->hw.flags, and have the NMI handler rely on that cached flag instead of making the call directly.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-53114?
CVE-2026-53114 has a risk score of 22, indicating it is a critical vulnerability.
How do I fix CVE-2026-53114?
To fix CVE-2026-53114, update your Linux kernel to the latest patch release that addresses this vulnerability.
Can CVE-2026-53114 affect my Linux system?
Yes, CVE-2026-53114 can potentially affect any system running an affected version of the Linux kernel.
What does CVE-2026-53114 involve?
CVE-2026-53114 involves an unsafe call to perf_allow_kernel() from the IBS NMI handler, which could lead to system instability.
When was CVE-2026-53114 published?
CVE-2026-53114 was published on June 24, 2026.