CVE-2022-48686
A critical vulnerability in the Linux kernel’s NVMe over TCP implementation allows an attacker to trigger a use‑after‑free that can lead to arbitrary code execution. The flaw occurs when digest errors are detected during data transfer and has been fixed in newer kernel releases.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
Linux kernel, all versions prior to the patch that includes the nvme‑tcp UAF fix.
Real-world impact
An attacker who can send crafted NVMe over TCP traffic could cause the kernel to free memory that is still in use, potentially allowing them to execute arbitrary code with kernel privileges.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability requires no authentication or user interaction, can be exploited remotely, and has complete confidentiality, integrity, and availability impact.
What to do about it
- 01Update the Linux kernel to a version that includes the nvme‑tcp UAF fix.
NVD-referenced vendor advisory
Timeline
- May 3, 2024 · May 3, 2024PublishedDisclosed and added to the National Vulnerability Database.
- Aug 4, 2026 · 2d agoAdvisory updatedThe NVD record was last revised.
- Aug 5, 2026 · 1d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.