PT-2025-40171 · Linux+3 · Linux Kernel+3

Published 2023-04-02 · Updated 2026-02-12 · CVE-2023-53464

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV: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

NULL Pointer Dereference

Weakness Enumeration

CWE-476

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

Suse

References · 1171

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53464.json · Exploit
• https://git.kernel.org/stable/c/5e5c5f472972c4bc9430adc08b36763a0fa5b9f7 · Patch
• https://osv.dev/vulnerability/CVE-2023-53464 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:03613-1 · Vendor Advisory
• https://git.kernel.org/stable/c/6e06a68fbbfcd8576eee8f7139fa2b13c9b72e91 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53464 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53464 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53464 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53464 · Vendor Advisory
• https://git.kernel.org/stable/c/499757ad3332e2527254f9ab68dec1da087b1d96 · Patch
• https://git.kernel.org/stable/c/48b19b79cfa37b1e50da3b5a8af529f994c08901 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:3761-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53464 · Security Note
• https://bdu.fstec.ru/vul/2026-06098 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:03628-1 · Vendor Advisory