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CVE Record

CVE-2023-53609: scsi: Revert "scsi: core: Do not increase scsi_device's iorequest_cnt if dispatch failed"

In the Linux kernel, the following vulnerability has been resolved: scsi: Revert "scsi: core: Do not increase scsi_device's iorequest_cnt if dispatch failed" The "atomic_inc(&cmd->device->iorequest_cnt)" in scsi_queue_rq() would cause kernel panic because cmd->device may be freed after returning from scsi_dispatch_cmd(). This reverts commit cfee29ffb45b1c9798011b19d454637d1b0fe87d.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2023-53609 is a Linux kernel SCSI core flaw that can cause a kernel panic. In business terms, affected systems may crash under the relevant storage I/O condition, creating availability risk. The provided sources do not give a CVSS score or evidence of active exploitation.

Executive priority

Treat this as an availability-risk patching item, not a confirmed emergency. Prioritize critical Linux systems where kernel crashes would affect production services, especially storage-heavy workloads, while awaiting vendor-specific severity and package guidance.

Technical view

The issue is tied to scsi_queue_rq() incrementing cmd->device->iorequest_cnt after scsi_dispatch_cmd() returns. The CVE description says cmd->device may already be freed, leading to a kernel panic. The upstream resolution is a revert of commit cfee29ffb45b1c9798011b19d454637d1b0fe87d.

Likely exposure

Exposure appears limited to Linux kernels containing the affected SCSI core change. The record lists Linux kernel version entries including 6.2, 6.3.4, and 6.4, but the affected-version data is sparse and should be verified against vendor kernel packages.

Exploitation context

The source bundle reports no CISA KEV listing and provides no public exploit evidence. The described impact is kernel panic, so the practical concern is availability loss rather than confirmed code execution or data compromise.

Researcher notes

Evidence is limited to the CVE record and kernel stable references. The root cause is a lifetime issue around cmd->device after scsi_dispatch_cmd(). The record does not provide CVSS, CWE, exploit status, or detailed distribution mapping.

Mitigation direction

  • Review Linux kernel vendor advisories for CVE-2023-53609 and affected package versions.
  • Prioritize kernel updates for production systems using SCSI-backed storage paths.
  • Apply stable kernel updates that include the referenced revert commits.
  • Avoid inventing local workarounds; use distribution or upstream kernel guidance.

Validation and detection

  • Inventory Linux kernel versions across servers, appliances, and VM images.
  • Check whether deployed kernels include commit cfee29ffb45b1c9798011b19d454637d1b0fe87d.
  • Confirm whether vendor kernel changelogs include the referenced stable fixes.
  • Monitor for unexplained kernel panics on systems using SCSI storage paths.
Prepared
Confidence
medium
Sources
4

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-2023-53609 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
3Source 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
LinuxLinuxcfee29ffb45b1c9798011b19d454637d1b0fe87d, cfee29ffb45b1c9798011b19d454637d1b0fe87dunaffected
LinuxLinux6.2, 0, 6.3.4, 6.4affected
Weakness

CWE details

No CWE listed

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