---
id: CVE-2026-53114
title: 'perf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  perf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler

  Calling perf_allow_kernel() from the NMI context is unsafe and could be
  fatal. Capture the per…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 50a53b60e141d7e31368a87e222e4dd5597bd4ae <
    2783ed2442ce69ae240b787aee6dae801cef7aec
  - >-
    Linux >= 50a53b60e141d7e31368a87e222e4dd5597bd4ae <
    0584e74fa2b27e9e722cfb5b579f79263df20040
  - >-
    Linux >= 50a53b60e141d7e31368a87e222e4dd5597bd4ae <
    b0a09142622a994c4f4088c3f61db5da87cfc711
  - Linux 6.14
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T16:19:17.969891Z'
published: '2026-06-24'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T16:24:01.371Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-53114'
references:
  - url: 'https://git.kernel.org/stable/c/2783ed2442ce69ae240b787aee6dae801cef7aec'
  - url: 'https://git.kernel.org/stable/c/0584e74fa2b27e9e722cfb5b579f79263df20040'
  - url: 'https://git.kernel.org/stable/c/b0a09142622a994c4f4088c3f61db5da87cfc711'
tags:
  - cve.org
epss: 0.00112
epssPercentile: 0.01403
ingestedAt: '2026-11-06T16:57:43.293Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

perf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler

Calling perf_allow_kernel() 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

- `Linux >= 50a53b60e141d7e31368a87e222e4dd5597bd4ae < 2783ed2442ce69ae240b787aee6dae801cef7aec`
- `Linux >= 50a53b60e141d7e31368a87e222e4dd5597bd4ae < 0584e74fa2b27e9e722cfb5b579f79263df20040`
- `Linux >= 50a53b60e141d7e31368a87e222e4dd5597bd4ae < b0a09142622a994c4f4088c3f61db5da87cfc711`
- `Linux 6.14`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.