VulnerabilityPublished 24 Jun 2026Updated 6 Nov 2026

CVE-2026-53114: Linux kernel · perf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in b0a09142622a994c4f4088c3f61db5da87cfc711 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:49 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in b0a09142622a994c4f4088c3f61db5da87cfc711, 2783ed2442ce69ae240b787aee6dae801cef7aec, 0584e74fa2b27e9e722cfb5b579f79263df20040

Exploitation evidence

Disclosed: evidence found.
CVE published 24 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to b0a09142622a994c4f4088c3f61db5da87cfc711, 2783ed2442ce69ae240b787aee6dae801cef7aec or 0584e74fa2b27e9e722cfb5b579f79263df20040.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 50a53b60e141d7e31368a87e222e4dd5597bd4ae, < b0a09142622a994c4f4088c3f61db5da87cfc711	Fixed in b0a09142622a994c4f4088c3f61db5da87cfc711
LinuxLinux	Affected ≥ 50a53b60e141d7e31368a87e222e4dd5597bd4ae, < 2783ed2442ce69ae240b787aee6dae801cef7aec	Fixed in 2783ed2442ce69ae240b787aee6dae801cef7aec
LinuxLinux	Affected ≥ 50a53b60e141d7e31368a87e222e4dd5597bd4ae, < 0584e74fa2b27e9e722cfb5b579f79263df20040	Fixed in 0584e74fa2b27e9e722cfb5b579f79263df20040
LinuxLinux	Affected =6.14	Fixed in–

Description

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.

References

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