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EUVD-2026-364674

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 08:33

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

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{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T08:33:34.613779+00:00",
  "id": "EUVD-2026-364674"
}

CVE-2026-23271 (GCVE-0-2026-23271)

Vulnerability from cvelistv5 – Published: 2026-03-20 08:08 – Updated: 2026-09-08 08:45

Title

perf: Fix __perf_event_overflow() vs perf_remove_from_context() race

Summary

In the Linux kernel, the following vulnerability has been resolved: perf: Fix __perf_event_overflow() vs perf_remove_from_context() race Make sure that __perf_event_overflow() runs with IRQs disabled for all possible callchains. Specifically the software events can end up running it with only preemption disabled. This opens up a race vs perf_event_exit_event() and friends that will go and free various things the overflow path expects to be present, like the BPF program.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/4df1a45819e50993c…
https://git.kernel.org/stable/c/4f8d5812337871227…
https://git.kernel.org/stable/c/5c48fdc4b4623533d…
https://git.kernel.org/stable/c/3f89b61dd504c5b67…
https://git.kernel.org/stable/c/bb190628fe5f2a73b…
https://git.kernel.org/stable/c/c9bc1753b3cc41d0e…
https://cert-portal.siemens.com/productcert/html/…
https://cert-portal.siemens.com/productcert/html/…

Impacted products

8 products

Vendor	Product	Version
Linux	Linux	Affected: 592903cdcbf606a838056bae6d03fc557806c914 , < 4df1a45819e50993cb351682a6ae8e7ed2d233a0 (git) Affected: 592903cdcbf606a838056bae6d03fc557806c914 , < 4f8d5812337871227bb2c98669a87c306a2f86ef (git) Affected: 592903cdcbf606a838056bae6d03fc557806c914 , < 5c48fdc4b4623533d86e279f51531a7ba212eb87 (git) Affected: 592903cdcbf606a838056bae6d03fc557806c914 , < 3f89b61dd504c5b6711de9759e053b082f9abf12 (git) Affected: 592903cdcbf606a838056bae6d03fc557806c914 , < bb190628fe5f2a73ba762a9972ba16c5e895f73e (git) Affected: 592903cdcbf606a838056bae6d03fc557806c914 , < c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae (git)
Linux	Linux	Affected: 2.6.31 Unaffected: 0 , < 2.6.31 (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.77 , ≤ 6.12.* (semver) Unaffected: 6.18.17 , ≤ 6.18.* (semver) Unaffected: 6.19.7 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)
Siemens	SIMATIC S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.6 , < * (custom)
Siemens	SIMATIC S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.5 , < * (custom)
Siemens	SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP	Affected: V3.1.6 , < * (custom)
Siemens	SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP	Affected: V3.1.5 , < * (custom)
Siemens	SIPLUS S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.6 , < * (custom)
Siemens	SIPLUS S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.5 , < * (custom)

Show details on NVD website

JSON

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            "url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"
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            "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
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              "version": "0",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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EUVD-2026-364674

CVE-2026-23271 (GCVE-0-2026-23271)

Tags

Sightings

Nomenclature

Related by attack behaviour