Linux Kernel Vulnerability Affecting io_uring Functionality
CVE-2025-21863
Summary
In the Linux kernel, a significant security vulnerability has been identified concerning the io_uring subsystem. The issue arises from a flaw in the handling of opcode speculations, specifically regarding the integrity of the sqe->opcode field. This vulnerability could potentially allow for unauthorized access or manipulation of data by preventing proper sanitation against speculative execution attacks. Effective patch management is crucial for users employing affected Linux kernel versions to maintain system integrity and security.
Affected Version(s)
Linux d3656344fea0339fb0365c8df4d2beba4e0089cd
Linux d3656344fea0339fb0365c8df4d2beba4e0089cd < 506b9b5e8c2d2a411ea8fe361333f5081c56d23a
Linux d3656344fea0339fb0365c8df4d2beba4e0089cd
References
CVSS V3.1
Timeline
Vulnerability published
Vulnerability Reserved