CVE-2025-21863 — Resource Injection in Linux

CWE-99 — Resource Injection25 documents7 sources
Severity
7.8HIGHNVD
OSV7.1OSV5.5
EPSS
0.0%
top 87.91%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
9
LinuxLinux KernelLfprojects Valkey+6 more
Timeline
PublishedMar 12
Latest updateMar 18

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages11 packages

▶NVDlinux/linux_kernel5.6 — 6.6.80+3
▶Debianlinux/linux_kernel< 6.12.17-1+1
▶Ubuntulinux/linux_kernel< 6.8.0-78.78

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

12
OSV
valkey vulnerabilities↗2026-03-18
▶
OSV
linux-azure, linux-azure-6.8, linux-azure-nvidia vulnerabilities↗2025-09-03
▶
OSV
linux-gke, linux-hwe-6.8, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-raspi vulnerabilities↗2025-08-28
▶
OSV
linux-raspi-realtime vulnerabilities↗2025-08-26
▶
OSV
linux-oracle, linux-oracle-6.8 vulnerabilities↗2025-08-21
▶

📋Vendor Advisories

12
Ubuntu
Linux kernel (Azure) vulnerabilities↗2025-09-03
▶
Ubuntu
Linux kernel vulnerabilities↗2025-08-28
▶
Ubuntu
Linux kernel (Raspberry Pi Real-time) vulnerabilities↗2025-08-26
▶
Ubuntu
Linux kernel (Oracle) vulnerabilities↗2025-08-21
▶
Ubuntu
Linux kernel vulnerabilities↗2025-08-20
▶
CVE-2025-21863 — Resource Injection in Linux | cvebase