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CVE-2025-21863 (GCVE-0-2025-21863)

Vulnerability from cvelistv5 – Published: 2025-03-12 09:42 – Updated: 2026-09-08 08:40
VLAI
Title
io_uring: prevent opcode speculation
Summary
In the Linux kernel, the following vulnerability has been resolved: io_uring: prevent opcode speculation sqe->opcode is used for different tables, make sure we santitise it against speculations.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:25 UTC
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d3656344fea0339fb0365c8df4d2beba4e0089cd , < 87e9eef43c758da267f6332678058a79764c7eba (git)
Affected: d3656344fea0339fb0365c8df4d2beba4e0089cd , < 18eae8420081ef8e043ad455937bfb470ef08607 (git)
Affected: d3656344fea0339fb0365c8df4d2beba4e0089cd , < d261ead565a080e3411b0dd04e6d58a52471cac8 (git)
Affected: d3656344fea0339fb0365c8df4d2beba4e0089cd , < b9826e3b26ec031e9063f64a7c735449c43955e4 (git)
Affected: d3656344fea0339fb0365c8df4d2beba4e0089cd , < 506b9b5e8c2d2a411ea8fe361333f5081c56d23a (git)
Affected: d3656344fea0339fb0365c8df4d2beba4e0089cd , < fdbfd52bd8b85ed6783365ff54c82ab7067bd61b (git)
Affected: d3656344fea0339fb0365c8df4d2beba4e0089cd , < 1e988c3fe1264708f4f92109203ac5b1d65de50b (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.6
Unaffected: 0 , < 5.6 (semver)
Unaffected: 5.10.259 , ≤ 5.10.* (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.80 , ≤ 6.6.* (semver)
Unaffected: 6.12.17 , ≤ 6.12.* (semver)
Unaffected: 6.13.5 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
Show details on NVD website

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.

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Detection rules are retrieved from Rulezet.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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