CVE-2026-89481 Linux Kernel nvme-tcp - Information Disclosure

Linux kernel nvme-tcp contains an information disclosure vulnerability caused by improper direction check in nvme_tcp_handle_r2t for read commands, letting malicious controllers read host memory, exploit requires malicious controller sending crafted R2T packets.

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

Details

Type
Information Disclosure
Impact
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 with the nvme-tcp fix.

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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