CVE-2026-90230 Linux Kernel - Out of Bounds Read

Linux kernel contains a heap out-of-bounds read in nvmet_auth_negotiate() caused by improper validation of host-supplied transfer length and identifiers, letting malicious hosts cause memory read beyond buffer, exploit requires crafted malicious host input.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
EPSS
0.46% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Out of Bounds Read
Impact
Information Disclosure, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Published
17 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for nvmet_auth_negotiate 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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