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CVE-2023-53609 (GCVE-0-2023-53609)

Vulnerability from cvelistv5 – Published: 2025-10-04 15:44 – Updated: 2026-08-05 09:15
VLAI
Title
scsi: Revert "scsi: core: Do not increase scsi_device's iorequest_cnt if dispatch failed"
Summary
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.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: cfee29ffb45b1c9798011b19d454637d1b0fe87d , < 35fe6fa57b994e7da222893adf0bb748d6055e73 (git)
Affected: cfee29ffb45b1c9798011b19d454637d1b0fe87d , < 6ca9818d1624e136a76ae8faedb6b6c95ca66903 (git)
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Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.3.4 , ≤ 6.3.* (semver)
Unaffected: 6.4 , ≤ * (original_commit_for_fix)
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              "value": "AV:L - The vulnerable code is the SCSI mid-layer dispatch path (scsi_queue_rq/scsi_dispatch_cmd) on the initiator side, reached only by submitting I/O to a local SCSI device; there is no remote/network trigger.\nAC:L - Exploitation is a cross-CPU UAF race between command completion/device teardown and the trailing atomic_inc; an attacker controlling a removable/hot-pluggable SCSI device can drive both I/O and removal and retry the race repeatedly, so complexity is Low.\nPR:L - Reaching the vulnerable atomic_inc requires a local authenticated user able to submit I/O to (or open) a SCSI device; no elevated capability is needed to dispatch a command down this path.\nUI:N - The bug is triggered by ordinary I/O submission and concurrent device release; no action by a separate victim user is required.\nS:U - The corruption is confined to the kernel\u0027s own memory within the same security authority; no VM/IOMMU/sandbox boundary is crossed.\nC:H - The use-after-free operates on a freed scsi_device slab object whose contents an attacker can control via heap grooming, and per UAF scoring guidance such freed-object access is treated as enabling high-impact information disclosure.\nI:H - The atomic_inc is a use-after-free read-modify-write into a freed, potentially attacker-reallocated object, a memory-corruption write primitive that per guidance is scored High.\nA:H - The commit explicitly states the bug causes a kernel panic, and any use-after-free reliably produces a crash/oops."
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    "dateReserved": "2025-10-04T15:40:38.480Z",
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T19:18:42+00:00",
      "cve": "CVE-2023-53609",
      "id": "CVE-2023-53609",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_affected": "122",
      "product_status:known_not_affected": "152",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: scsi: Revert \"scsi: core: Do not increase scsi_device\u0027s iorequest_cnt if dispatch failed\"",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53609.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.