CVE-2026-89480 Linux Kernel nvme-tcp - Data Integrity Vulnerability

Linux kernel nvme-tcp contains a data integrity vulnerability caused by improper validation of read byte count in nvme_tcp_recv_data(), letting attackers cause incomplete reads to be reported as complete, exploit requires malicious NVMe controller.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.41% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Data Integrity Vulnerability
Impact
Data Tampering, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
11 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for nvme-tcp read byte count validation.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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