CVE-2023-53464: scsi: iscsi_tcp: Check that sock is valid before iscsi_set_param()

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-01 · updated 2026-06-17
Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: iscsi_tcp: Check that sock is valid before iscsi_set_param() The validity of sock should be checked before assignment to avoid incorrect values. Commit 57569c37f0ad ("scsi: iscsi: iscsi_tcp: Fix null-ptr-deref while calling getpeername()") introduced this change which may lead to inconsistent values of tcp_sw_conn->sendpage and conn->datadgst_en. Fix the issue by moving the position of the assignment.

Affected products

Linux kernel: from 5.10.150 before 5.10.178; from 5.15.75 before 5.15.107; from 5.19.17 before 6.0; from 6.0.3 before 6.1.24; from 6.2 before 6.2.11; 6.3-rc1, 6.3-rc2, 6.3-rc3, 6.3-rc4, 6.3-rc5 — fixed in 5.10.178, 5.15.107, 6.0, 6.1.24, 6.2.11

How to fix

Upgrade to a fixed version: Linux kernel 5.10.178, 5.15.107, 6.0, 6.1.24. Check the vendor advisory for mitigations.

References

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