CVE-2025-71068
A critical flaw in the Linux kernel’s RDMA service allows an attacker to read or write arbitrary memory by exploiting an unchecked array index. The bug can lead to complete compromise of the affected system. It has been fixed in recent kernel releases.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
Linux kernel, especially versions 6.19 and earlier that do not include the patch. Typical users include Linux system administrators and operators of servers and embedded devices.
Real-world impact
An attacker could read or write arbitrary memory, potentially taking full control of the system.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability is exploitable over the network with no authentication, and it can compromise confidentiality, integrity, and availability.
What to do about it
- 01Upgrade your Linux kernel to the latest version that includes the fix (e.g., 6.19 or newer).
- 02Restart your system to load the updated kernel.
NVD description indicates the vulnerability has been resolved.
Timeline
- Jan 13, 2026 · Jan 13, 2026PublishedDisclosed and added to the National Vulnerability Database.
- Jul 30, 2026 · 6d agoAdvisory updatedThe NVD record was last revised.
- Jul 30, 2026 · 6d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.