CVE-2025-21863

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/18eae8420081ef8e043ad455937bfb470ef08607
https://git.kernel.org/stable/c/1e988c3fe1264708f4f92109203ac5b1d65de50b	Patch
https://git.kernel.org/stable/c/506b9b5e8c2d2a411ea8fe361333f5081c56d23a	Patch
https://git.kernel.org/stable/c/87e9eef43c758da267f6332678058a79764c7eba
https://git.kernel.org/stable/c/b9826e3b26ec031e9063f64a7c735449c43955e4	Patch
https://git.kernel.org/stable/c/d261ead565a080e3411b0dd04e6d58a52471cac8
https://git.kernel.org/stable/c/fdbfd52bd8b85ed6783365ff54c82ab7067bd61b	Patch
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
https://cert-portal.siemens.com/productcert/html/ssa-457936.html
https://cert-portal.siemens.com/productcert/html/ssa-784472.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc3::::::

History

15 Oct 2026, 02:17

Type	Values Removed	Values Added
References		() https://cert-portal.siemens.com/productcert/html/ssa-457936.html - () https://cert-portal.siemens.com/productcert/html/ssa-784472.html -

Information

Published : 2025-03-12 10:15

Updated : 2026-10-15 02:17

NVD link : CVE-2025-21863

Mitre link : CVE-2025-21863

CVE.ORG link : CVE-2025-21863

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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"unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.7", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.7", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.7", "lessThan": "*", "versionType": "custom"}], 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vulnerabilidad: io_uring: evita la especulaci\u00f3n de c\u00f3digo de operaci\u00f3n. sqe->opcode se utiliza para diferentes tablas, aseg\u00farese de que lo desinfectemos contra especulaciones."}], "lastModified": "2026-10-15T02:17:39.827", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E3785293-6562-4D6B-B271-6DD83134CCC5", "versionEndExcluding": "6.6.80", "versionStartIncluding": "5.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "15370AEE-6D1C-49C3-8CB7-E889D5F92B6F", "versionEndExcluding": "6.12.17", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "72E69ABB-9015-43A6-87E1-5150383CFFD9", "versionEndExcluding": "6.13.5", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*", 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