Inefficient Algorithmic Complexity in Linux kernel - CVE-2026-98056

Vulnerability details

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to inefficient algorithmic complexity in nvme_scan_ns_list() when processing a reported NVMe namespace identifier list with sparse gaps. A remote attacker can provide a namespace list containing a large sparse namespace identifier gap to cause a denial of service.

Affected software

How to mitigate CVE-2026-98056

External References

• https://git.kernel.org/stable/c/4ed7f3d7d435bf5b63da2814dc9270f5ba896011
• https://git.kernel.org/stable/c/52200fc41a79da430ccf7c126ed837535b087ea2
• https://git.kernel.org/stable/c/c84ad7407fb16b92d9b7a649cc304a9cf3757897
• https://git.kernel.org/stable/c/f56b2bb4b18b017b056c4c17c66b2c4c54bf6ee4

Related Security Bulletins

• Inefficient Algorithmic Complexity in Linux kernel nvme host driver