io_uring: prevent opcode speculation
Summary
| CVE | CVE-2025-21863 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2025-03-12 10:15:19 UTC |
| Updated | 2026-06-19 13:16:20 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.1 7.8 HIGH from [email protected]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Problem Types: NVD-CWE-noinfo | CWE-noinfo Not enough information
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | ADP | DECLARED | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected d3656344fea0339fb0365c8df4d2beba4e0089cd 87e9eef43c758da267f6332678058a79764c7eba git | Not specified |
| CNA | Linux | Linux | affected d3656344fea0339fb0365c8df4d2beba4e0089cd 18eae8420081ef8e043ad455937bfb470ef08607 git | Not specified |
| CNA | Linux | Linux | affected d3656344fea0339fb0365c8df4d2beba4e0089cd d261ead565a080e3411b0dd04e6d58a52471cac8 git | Not specified |
| CNA | Linux | Linux | affected d3656344fea0339fb0365c8df4d2beba4e0089cd b9826e3b26ec031e9063f64a7c735449c43955e4 git | Not specified |
| CNA | Linux | Linux | affected d3656344fea0339fb0365c8df4d2beba4e0089cd 506b9b5e8c2d2a411ea8fe361333f5081c56d23a git | Not specified |
| CNA | Linux | Linux | affected d3656344fea0339fb0365c8df4d2beba4e0089cd fdbfd52bd8b85ed6783365ff54c82ab7067bd61b git | Not specified |
| CNA | Linux | Linux | affected d3656344fea0339fb0365c8df4d2beba4e0089cd 1e988c3fe1264708f4f92109203ac5b1d65de50b git | Not specified |
| CNA | Linux | Linux | affected 5.6 | Not specified |
| CNA | Linux | Linux | unaffected 5.6 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.259 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.209 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.175 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.80 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.17 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.13.5 6.13.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.14 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/b9826e3b26ec031e9063f64a7c735449c43955e4 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/506b9b5e8c2d2a411ea8fe361333f5081c56d23a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/fdbfd52bd8b85ed6783365ff54c82ab7067bd61b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/18eae8420081ef8e043ad455937bfb470ef08607 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d261ead565a080e3411b0dd04e6d58a52471cac8 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/1e988c3fe1264708f4f92109203ac5b1d65de50b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/87e9eef43c758da267f6332678058a79764c7eba | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.