CVE-2026-90293 Linux Kernel IB/isert - Race Condition

Linux kernel IB/isert contains a race condition caused by posting full-feature receive buffers before session registration, letting initiators execute SCSI commands against uninitialized sessions, exploit requires initiator to send commands before final Login Response.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.69% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Race Condition
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 latest Linux kernel version containing the patch that posts receive buffers after 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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