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CVE Record

CVE-2023-53451: scsi: qla2xxx: Fix potential NULL pointer dereference

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix potential NULL pointer dereference Klocwork tool reported 'cur_dsd' may be dereferenced. Add fix to validate pointer before dereferencing the pointer.

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 storage-driver flaw in qla2xxx. A code path could dereference a missing pointer, which may affect system stability if reachable. The supplied sources do not provide a CVSS score, confirmed impact, exploitability details, or evidence of active exploitation.

Executive priority

Handle through normal kernel patch governance, with higher priority for servers dependent on qla2xxx Fibre Channel storage. Current evidence does not support emergency treatment, but storage-driver instability can affect availability.

Technical view

The issue is a potential NULL pointer dereference of cur_dsd in the Linux kernel qla2xxx SCSI driver. The kernel stable fixes add pointer validation before dereference. The record lists affected Linux kernel ranges, but the supplied evidence does not describe a trigger path, required privileges, or practical exploit conditions.

Likely exposure

Exposure is most relevant to Linux systems using the qla2xxx SCSI/Fibre Channel driver. General Linux systems without this driver or related hardware are less likely to be exposed, but inventory confirmation is required.

Exploitation context

The source bundle states KEV is false and provides no cited evidence of active exploitation. It also lacks public exploit details, attacker prerequisites, or a demonstrated real-world impact path.

Researcher notes

The record is thin: no CVSS, CWE, exploit status, or detailed reachability analysis. The useful anchors are the qla2xxx component, the cur_dsd NULL-check fix, and the kernel stable commit references.

Mitigation direction

  • Apply vendor-supported Linux kernel updates containing the referenced stable fixes.
  • Prioritize systems using qla2xxx or QLogic Fibre Channel storage paths.
  • Track distribution advisories for packaged fixes for CVE-2023-53451.
  • Avoid manual kernel changes unless aligned with vendor support guidance.

Validation and detection

  • Inventory Linux kernels and identify hosts loading or packaging qla2xxx.
  • Compare deployed kernel versions against vendor advisories for this CVE.
  • Confirm storage-driver test coverage after kernel update in staging.
  • Monitor kernel logs for qla2xxx instability before and after remediation.
Prepared
Confidence
medium
Sources
10

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-2023-53451 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
9Source 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
LinuxLinuxa9083016a5314b3aeba6e0d2e814872e72168c08, a9083016a5314b3aeba6e0d2e814872e72168c08, a9083016a5314b3aeba6e0d2e814872e72168c08, a9083016a5314b3aeba6e0d2e814872e72168c08, a9083016a5314b3aeba6e0d2e814872e72168c08, a9083016a5314b3aeba6e0d2e814872e72168c08, a9083016a5314b3aeba6e0d2e814872e72168c08, a9083016a5314b3aeba6e0d2e814872e72168c08unaffected
LinuxLinux2.6.35, 0, 4.14.322, 4.19.291, 5.4.251, 5.10.188, 5.15.121, 6.1.40, 6.4.5, 6.5affected
Weakness

CWE details

No CWE listed

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