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CVE Record

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

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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel iSCSI TCP bug caused by using connection state before confirming a socket is valid. The public record does not provide CVSS, impact severity, or evidence of exploitation. Treat it as relevant mainly for systems using the kernel iSCSI TCP initiator or related storage paths.

Executive priority

Prioritize normal kernel patch management, with higher urgency for business-critical Linux systems using iSCSI storage. The current public evidence does not justify emergency handling, but incomplete severity data means exposure should be verified rather than ignored.

Technical view

The issue is in Linux kernel scsi/iscsi_tcp parameter handling. A prior fix for a NULL pointer dereference changed assignment ordering and could leave tcp_sw_conn->sendpage and conn->datadgst_en inconsistent when sock is invalid. Stable kernel commits move the assignment after validity checking.

Likely exposure

Exposure is most plausible on Linux systems with iSCSI over TCP functionality enabled or used. The source bundle lists Linux kernel versions and stable commits, but the provided version data is incomplete for distribution-specific package mapping.

Exploitation context

CISA KEV status is false in the bundle, and no cited source states active exploitation. The bundle also does not provide exploitability prerequisites, attack vector, privileges required, or public proof-of-concept status.

Researcher notes

The record identifies a logic/order bug around sock validation in iscsi_set_param handling. Public details support a code-correctness and reliability concern, but do not establish remote exploitability, attacker requirements, or impact beyond inconsistent connection state.

Mitigation direction

  • Identify Linux hosts using iSCSI over TCP or loading iscsi_tcp-related functionality.
  • Apply kernel updates from your Linux distribution that include the referenced stable fixes.
  • Prioritize storage servers, virtualization hosts, and critical systems with iSCSI dependencies.
  • If updates are unavailable, check vendor guidance for supported mitigations or workarounds.

Validation and detection

  • Inventory kernel versions and distribution package builds across Linux assets.
  • Confirm whether iscsi_tcp or iSCSI initiator functionality is enabled or used.
  • Map installed kernels to vendor advisories or the referenced stable commits.
  • Review logs for storage or kernel instability, without treating absence as proof of safety.
Prepared
Confidence
medium
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2023-53464 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
0ADP providers
6Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux884a788f065578bb640382279a83d1df433b13e6, a26b0658751bb0a3b28386fca715333b104d32a2, 57569c37f0add1b6489e1a1563c71519daf732cf, 57569c37f0add1b6489e1a1563c71519daf732cf, 57569c37f0add1b6489e1a1563c71519daf732cf, 897dbbc57d71e8a34ec1af8e573a142de457da38, 0a0b861fce2657ba08ec356a74346b37ca4b2008, 5.10.150, 5.15.75, 5.19.17, 6.0.3unaffected
LinuxLinux6.1, 0, 5.10.178, 5.15.107, 6.1.24, 6.2.11, 6.3affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.