CVE-2026-53114

Local system crash via non-reentrant NMI call

Published Jun 24, 2026 · Updated Jun 24, 2026

Denial of service in Linux Kernel 6.14 and later affected branches allows local users to crash the system through AMD IBS perf events. The AMD IBS NMI handler calls the non-reentrant perf_allow_kernel() permission helper in interrupt context instead of using a value captured during event initialization. Triggering the affected performance-event path requires local low-privileged access and can terminate kernel operation, interrupting the entire host.

CVSS severity5.5
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Linux Kernel 6.14 and later affected branches allows local users to crash the system through AMD IBS perf events. The AMD IBS NMI handler calls the non-reentrant perf_allow_kernel() permission helper in interrupt context instead of using a value captured during event initialization. Triggering the affected performance-event path requires local low-privileged access and can terminate kernel operation, interrupting the entire host.

The record

CVE
CVE-2026-53114
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-663, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=50a53b60e141d7e31368a87e222e4dd5597bd4ae <0584e74fa2b27e9e722cfb5b579f79263df20040
  2. Affected versionversion=50a53b60e141d7e31368a87e222e4dd5597bd4ae <2783ed2442ce69ae240b787aee6dae801cef7aec
  3. Affected versionversion=50a53b60e141d7e31368a87e222e4dd5597bd4ae <b0a09142622a994c4f4088c3f61db5da87cfc711
  4. Affected versionversion=6.14

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=50a53b60e141d7e31368a87e222e4dd5597bd4ae <0584e74fa2b27e9e722cfb5b579f79263df20040; version=50a53b60e141d7e31368a87e222e4dd5597bd4ae <2783ed2442ce69ae240b787aee6dae801cef7aec; version=50a53b60e141d7e31368a87e222e4dd5597bd4ae <b0a09142622a994c4f4088c3f61db5da87cfc711; version=6.14

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-663Use of a Non-reentrant Function in a Concurrent Context
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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