CVE-2026-90293

kernel: IB/isert: post the full-feature receive buffers after session registration

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 17, 2026

Updated · October 14, 2026

Description

A flaw was found in the Linux kernel's IB/isert module, which handles InfiniBand (IB) and iSCSI Extensions for RDMA (iSER) connections. A remote attacker could exploit this by sending a specially crafted SCSI command before a network session is fully established. This could lead to a system crash, causing a denial of service (DoS) for affected systems.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference