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

What is CVE-2023-53464?

CVE-2023-53464 is a medium-severity vulnerability in Linux kernel, published on 1 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-476

Which versions are affected by CVE-2023-53464?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-53464?

Apply the vendor's patch.

Is CVE-2023-53464 being exploited?

There is no known exploitation of CVE-2023-53464 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2023-53464, DEBIAN-CVE-2023-53464, GHSA-xwwx-gg4v-8gp7, UBUNTU-CVE-2023-53464.