Vulnerability in Linux
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.
EPSS: 0.002 (12.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux — versions 6.14, 6.13.5, 5.6
- Linux Linux_kernel — versions 6.14
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2025-21863?
- CVE-2025-21863 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-03-12.
- How severe is CVE-2025-21863?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2025-21863 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.