CVE-2023-53615 (GCVE-0-2023-53615)

Vulnerability from cvelistv5 – Published: 2025-10-04 15:44 – Updated: 2026-08-05 09:15
VLAI
Title
scsi: qla2xxx: Fix deletion race condition
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix deletion race condition System crash when using debug kernel due to link list corruption. The cause of the link list corruption is due to session deletion was allowed to queue up twice. Here's the internal trace that show the same port was allowed to double queue for deletion on different cpu. 20808683956 015 qla2xxx [0000:13:00.1]-e801:4: Scheduling sess ffff93ebf9306800 for deletion 50:06:0e:80:12:48:ff:50 fc4_type 1 20808683957 027 qla2xxx [0000:13:00.1]-e801:4: Scheduling sess ffff93ebf9306800 for deletion 50:06:0e:80:12:48:ff:50 fc4_type 1 Move the clearing/setting of deleted flag lock.
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 726b85487067d7f5b23495bc33c484b8517c4074 , < a4628a5b98e4c6d905e1f7638242612d7db7d9c2 (git)
Affected: 726b85487067d7f5b23495bc33c484b8517c4074 , < 4d7da12483e98c451a51bd294a3d3494f0aee5eb (git)
Affected: 726b85487067d7f5b23495bc33c484b8517c4074 , < f1ea164be545629bf442c22f508ad9e7b94ac100 (git)
Affected: 726b85487067d7f5b23495bc33c484b8517c4074 , < cd06c45b326e44f0d21dc1b3fa23e71f46847e28 (git)
Affected: 726b85487067d7f5b23495bc33c484b8517c4074 , < b05017cb4ff75eea783583f3d400059507510ab1 (git)
Affected: 726b85487067d7f5b23495bc33c484b8517c4074 , < 6dfe4344c168c6ca20fe7640649aacfcefcccb26 (git)
Create a notification for this product.
Linux Linux Affected: 4.11
Unaffected: 0 , < 4.11 (semver)
Unaffected: 5.4.258 , ≤ 5.4.* (semver)
Unaffected: 5.10.195 , ≤ 5.10.* (semver)
Unaffected: 5.15.132 , ≤ 5.15.* (semver)
Unaffected: 6.1.54 , ≤ 6.1.* (semver)
Unaffected: 6.5.4 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Fix deletion race condition\n\nSystem crash when using debug kernel due to link list corruption. The cause\nof the link list corruption is due to session deletion was allowed to queue\nup twice.  Here\u0027s the internal trace that show the same port was allowed to\ndouble queue for deletion on different cpu.\n\n20808683956 015 qla2xxx [0000:13:00.1]-e801:4: Scheduling sess ffff93ebf9306800 for deletion 50:06:0e:80:12:48:ff:50 fc4_type 1\n20808683957 027 qla2xxx [0000:13:00.1]-e801:4: Scheduling sess ffff93ebf9306800 for deletion 50:06:0e:80:12:48:ff:50 fc4_type 1\n\nMove the clearing/setting of deleted flag lock."
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              "value": "AV:A - The racing code paths are driven entirely by Fibre Channel fabric events (RSCN, PLOGI/PRLI, LOGO, ADISC responses) generated by remote ports on the SAN, so a peer attached to the same FC fabric can trigger it without local access. FC is a non-routable L2-style shared medium, making this Adjacent rather than Network, consistent with CVE-2025-68818 in the same driver.\nAC:L - The attacker controls both sides of the race \u2014 repeated login/logout and RSCN storms simultaneously drive the unlocked `deleted = 0` writes in `qla24xx_handle_adisc_event()`/`qla2x00_update_fcport()` and the locked test-and-set in `qlt_schedule_sess_for_deletion()`. The window can be retried indefinitely at high rate until the double-queue lands.\nPR:N - No credentials exist on the path: FC fabric login is not authentication, and session create/teardown state machine transitions are processed from remote port frames before any authorization decision. No local account on the target host is required at all.\nUI:N - Session deletion and re-login are handled autonomously by the driver\u0027s discovery state machine in response to fabric events; no administrator or user action is needed.\nS:U - The corruption is confined to kernel memory managed by the qla2xxx driver within the same security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - Double teardown causes `qlt_plogi_ack_unref()` refcount underflow and premature free of session-related objects, yielding a use-after-free on structures whose contents an attacker can influence via heap spraying \u2014 enabling kernel memory disclosure.\nI:H - Double `list_del` on `sess-\u003elist` and the dfs rport list writes attacker-influenceable pointers into freed memory, and the refcount underflow gives a UAF write primitive; both are the classic basis for control-flow hijack.\nA:H - The reported symptom is an outright system crash from linked-list corruption, and the counter underflows (`tgt-\u003esess_count`, `vha-\u003efcport_count`) also wedge the `waitQ`/`fcport_waitQ` teardown waits, hanging the HBA."
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      "title": "scsi: qla2xxx: Fix deletion race condition",
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    "cveId": "CVE-2023-53615",
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    "dateUpdated": "2026-08-05T09:15:08.308Z",
    "state": "PUBLISHED"
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Here\u0027s the internal trace that show the same port was allowed to\\ndouble queue for deletion on different cpu.\\n\\n20808683956 015 qla2xxx [0000:13:00.1]-e801:4: Scheduling sess ffff93ebf9306800 for deletion 50:06:0e:80:12:48:ff:50 fc4_type 1\\n20808683957 027 qla2xxx [0000:13:00.1]-e801:4: Scheduling sess ffff93ebf9306800 for deletion 50:06:0e:80:12:48:ff:50 fc4_type 1\\n\\nMove the clearing/setting of deleted flag 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T19:19:52+00:00",
      "cve": "CVE-2023-53615",
      "id": "CVE-2023-53615",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:fixed": "399",
      "product_status:known_affected": "80",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: scsi: qla2xxx: Fix deletion race condition",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53615.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-25T02:15:18Z",
      "cve": "CVE-2023-53615",
      "id": "CVE-2023-53615",
      "initial_release_date": "2025-10-05T02:55:21Z",
      "product_status:known_affected": "452",
      "product_status:known_not_affected": "31",
      "product_status:recommended": "614",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-53615",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-53615.json",
      "version": "47"
    }
  }
}



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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

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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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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