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CVE-2026-63888

kernel: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd()

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Severity

Important

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · July 19, 2026

Updated · September 23, 2026

Description

A flaw was found in the Linux kernel's iSCSI (Internet Small Computer System Interface) target subsystem. This vulnerability involves a buffer overread and a double-free error when processing iSCSI Text commands. A remote attacker could exploit these issues by sending specially crafted network packets, leading to a kernel crash or memory corruption. This could result in a Denial of Service (DoS) for the affected system.

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 · 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-125 · Out-of-bounds Read