CVE-2026-90294 Linux Kernel IB/isert - Denial of Service

Linux kernel IB/isert contains a null pointer dereference caused by sending the final Login Response before session registration in isert_put_login_tx(), letting remote attackers cause a kernel oops and denial of service, exploit requires sending a SCSI command immediately after login response.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.68% chance of exploitation in 30 days
View the NVD record ↗

Details

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

Vendor fix

Update to the Linux kernel version including the patch that delays the final Login Response until session registration.

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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