PT-2025-40171 · Linux+4 · Linux Kernel+4

CVE-2023-53464

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Published

2023-04-02

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Updated

2026-08-21

CVSS v3.1

5.5

Medium

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description A flaw exists in the Linux kernel’s SCSI subsystem, specifically within the iscsi tcp component. The issue stems from a missing validation check for the sock variable before it is assigned within the iscsi set param() function. A previous commit intended to address a separate null-pointer dereference introduced the potential for inconsistent values in tcp sw conn->sendpage and conn->datadgst en. The correction involves repositioning the assignment to ensure the sock variable is valid before being used.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

NULL Pointer Dereference

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Weakness Enumeration

Related Identifiers

ALSA-2025_16880
BDU:2026-06098
CVE-2023-53464
RHSA-2023:6583
RHSA-2023_6583
SUSE-SU-2025:03613-1
SUSE-SU-2025:03615-1
SUSE-SU-2025:03626-1
SUSE-SU-2025:03628-1
SUSE-SU-2025:3716-1
SUSE-SU-2025:3761-1
SUSE-SU-2026:0473-1

Affected Products

Astra Linux
Linux Kernel
Red Hat
Red Os
Suse