CVE-2025-21863

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Source
https://cve.org/CVERecord?id=CVE-2025-21863
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21863.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-21863
Downstream
Related
Published
2025-03-12T09:42:20.552Z
Modified
2026-03-11T07:46:18.848731Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
io_uring: prevent opcode speculation
Details

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.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21863.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
d3656344fea0339fb0365c8df4d2beba4e0089cd
Fixed
b9826e3b26ec031e9063f64a7c735449c43955e4
Fixed
506b9b5e8c2d2a411ea8fe361333f5081c56d23a
Fixed
fdbfd52bd8b85ed6783365ff54c82ab7067bd61b
Fixed
1e988c3fe1264708f4f92109203ac5b1d65de50b

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21863.json"