Vulnerability-Lookup

GHSA-43G8-FHX4-JF78

Vulnerability from github – Published: 2026-09-16 12:30 – Updated: 2026-09-16 15:30

Details

In the Linux kernel, the following vulnerability has been resolved:

scsi: qla2xxx: edif: Fix NULL pointer deref in RX SA delete check

qla_chk_edif_rx_sa_delete_pending() obtains the SCSI command via GET_CMD_SP(sp) and immediately dereferences cmd->sc_data_direction. That command pointer can be NULL: the firmware may post a status completion for a command that has already been returned or aborted. The caller qla2x00_status_entry() acknowledges this on the very same status path, re-fetching GET_CMD_SP(sp) and bailing out with the "Command already returned" message when it is NULL -- but that check runs only after qla_chk_edif_rx_sa_delete_pending() has already dereferenced the pointer, so a NULL cmd crashes the kernel in interrupt context.

Return early when cmd is NULL, before touching cmd->sc_data_direction.

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-89863"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-16T11:16:54Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: edif: Fix NULL pointer deref in RX SA delete check\n\nqla_chk_edif_rx_sa_delete_pending() obtains the SCSI command via\nGET_CMD_SP(sp) and immediately dereferences cmd-\u003esc_data_direction.\nThat command pointer can be NULL: the firmware may post a status\ncompletion for a command that has already been returned or aborted.  The\ncaller qla2x00_status_entry() acknowledges this on the very same status\npath, re-fetching GET_CMD_SP(sp) and bailing out with the \"Command\nalready returned\" message when it is NULL -- but that check runs only\nafter qla_chk_edif_rx_sa_delete_pending() has already dereferenced the\npointer, so a NULL cmd crashes the kernel in interrupt context.\n\nReturn early when cmd is NULL, before touching cmd-\u003esc_data_direction.",
  "id": "GHSA-43g8-fhx4-jf78",
  "modified": "2026-09-16T15:30:59Z",
  "published": "2026-09-16T12:30:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89863"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2191b0034a2f1307d421782e6eceddf8eec9e7f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/75fd6d041c4a325ae37f4683e6678d3015988bb0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/94bfb61478bcb207d27f8cd24fd231421059519f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/96eb8a3fc9f7fe7ba32679fcf1d2fd7d251e7a8b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c20ee380ca59c5a8646750c4849969a815924e2e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/de0c8ef3b900c5e971c82ef38c6f5c22c5f3d8c1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e479e9b148456905d12711411484b94083c8ff58"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-89863 (GCVE-0-2026-89863)

Vulnerability from cvelistv5 – Published: 2026-09-16 10:31 – Updated: 2026-09-16 14:39

Title

scsi: qla2xxx: edif: Fix NULL pointer deref in RX SA delete check

Summary

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: edif: Fix NULL pointer deref in RX SA delete check qla_chk_edif_rx_sa_delete_pending() obtains the SCSI command via GET_CMD_SP(sp) and immediately dereferences cmd->sc_data_direction. That command pointer can be NULL: the firmware may post a status completion for a command that has already been returned or aborted. The caller qla2x00_status_entry() acknowledges this on the very same status path, re-fetching GET_CMD_SP(sp) and bailing out with the "Command already returned" message when it is NULL -- but that check runs only after qla_chk_edif_rx_sa_delete_pending() has already dereferenced the pointer, so a NULL cmd crashes the kernel in interrupt context. Return early when cmd is NULL, before touching cmd->sc_data_direction.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/e479e9b148456905d…
https://git.kernel.org/stable/c/2191b0034a2f1307d…
https://git.kernel.org/stable/c/de0c8ef3b900c5e97…
https://git.kernel.org/stable/c/96eb8a3fc9f7fe7ba…
https://git.kernel.org/stable/c/94bfb61478bcb207d…
https://git.kernel.org/stable/c/75fd6d041c4a325ae…
https://git.kernel.org/stable/c/c20ee380ca59c5a86…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: dd30706e73b70d67e88fdaca688db7a3374fd5de , < e479e9b148456905d12711411484b94083c8ff58 (git) Affected: dd30706e73b70d67e88fdaca688db7a3374fd5de , < 2191b0034a2f1307d421782e6eceddf8eec9e7f6 (git) Affected: dd30706e73b70d67e88fdaca688db7a3374fd5de , < de0c8ef3b900c5e971c82ef38c6f5c22c5f3d8c1 (git) Affected: dd30706e73b70d67e88fdaca688db7a3374fd5de , < 96eb8a3fc9f7fe7ba32679fcf1d2fd7d251e7a8b (git) Affected: dd30706e73b70d67e88fdaca688db7a3374fd5de , < 94bfb61478bcb207d27f8cd24fd231421059519f (git) Affected: dd30706e73b70d67e88fdaca688db7a3374fd5de , < 75fd6d041c4a325ae37f4683e6678d3015988bb0 (git) Affected: dd30706e73b70d67e88fdaca688db7a3374fd5de , < c20ee380ca59c5a8646750c4849969a815924e2e (git)
Linux	Linux	Affected: 5.15 Unaffected: 0 , < 5.15 (semver) Unaffected: 5.15.221 , ≤ 5.15.* (semver) Unaffected: 6.1.188 , ≤ 6.1.* (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.51 , ≤ 6.18.* (semver) Unaffected: 7.2.5 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_edif.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e479e9b148456905d12711411484b94083c8ff58",
              "status": "affected",
              "version": "dd30706e73b70d67e88fdaca688db7a3374fd5de",
              "versionType": "git"
            },
            {
              "lessThan": "2191b0034a2f1307d421782e6eceddf8eec9e7f6",
              "status": "affected",
              "version": "dd30706e73b70d67e88fdaca688db7a3374fd5de",
              "versionType": "git"
            },
            {
              "lessThan": "de0c8ef3b900c5e971c82ef38c6f5c22c5f3d8c1",
              "status": "affected",
              "version": "dd30706e73b70d67e88fdaca688db7a3374fd5de",
              "versionType": "git"
            },
            {
              "lessThan": "96eb8a3fc9f7fe7ba32679fcf1d2fd7d251e7a8b",
              "status": "affected",
              "version": "dd30706e73b70d67e88fdaca688db7a3374fd5de",
              "versionType": "git"
            },
            {
              "lessThan": "94bfb61478bcb207d27f8cd24fd231421059519f",
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              "versionType": "git"
            },
            {
              "lessThan": "75fd6d041c4a325ae37f4683e6678d3015988bb0",
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              "version": "dd30706e73b70d67e88fdaca688db7a3374fd5de",
              "versionType": "git"
            },
            {
              "lessThan": "c20ee380ca59c5a8646750c4849969a815924e2e",
              "status": "affected",
              "version": "dd30706e73b70d67e88fdaca688db7a3374fd5de",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_edif.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "lessThan": "5.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.221",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
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                  "versionStartIncluding": "5.15",
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                },
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                },
                {
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      ],
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: edif: Fix NULL pointer deref in RX SA delete check\n\nqla_chk_edif_rx_sa_delete_pending() obtains the SCSI command via\nGET_CMD_SP(sp) and immediately dereferences cmd-\u003esc_data_direction.\nThat command pointer can be NULL: the firmware may post a status\ncompletion for a command that has already been returned or aborted.  The\ncaller qla2x00_status_entry() acknowledges this on the very same status\npath, re-fetching GET_CMD_SP(sp) and bailing out with the \"Command\nalready returned\" message when it is NULL -- but that check runs only\nafter qla_chk_edif_rx_sa_delete_pending() has already dereferenced the\npointer, so a NULL cmd crashes the kernel in interrupt context.\n\nReturn early when cmd is NULL, before touching cmd-\u003esc_data_direction."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - qla_chk_edif_rx_sa_delete_pending() runs from qla2x00_status_entry() on STATUS_TYPE IOCBs the HBA firmware posts from a remote Fibre Channel or FCoE target\u0027s FCP_RSP. QLogic CNAs speak FCoE and SAN fabrics are stretched via FCIP, so a compromised target delivers late completions over the storage network with no local access.\nAC:L - A hostile target controls FCP_RSP timing and can delay a response until SCSI error handling aborts and returns the command, then complete so firmware posts status for a NULL cmd. The same function already handles that case (\"Command already returned\"); the crash is then deterministic and needs no rare config or layout beyond a qla2xxx HBA.\nPR:N - Completions are handled in the HBA interrupt/response-queue path (qla24xx_process_response_queue to qla2x00_status_entry) with no Linux credential or capability check; the attacker only needs to act as an FC/FCoE target on the fabric.\nUI:N - Once the target is visible on the fabric, the SCSI midlayer automatically issues commands (scan, path checks, mounted-filesystem I/O) whose STATUS_TYPE completions take the vulnerable path; no user mount, open, or other interactive step is required at exploit time.\nS:U - The NULL dereference and resulting oops stay inside the host kernel that owns the qla2xxx driver and do not cross a VM, IOMMU, or other separate security authority.\nC:N - This is a pure NULL-pointer dereference of GET_CMD_SP(sp) (cmd-\u003esc_data_direction at a NULL-page offset) when the SCSI command was already returned or aborted. There is no use-after-free of a live object, out-of-bounds read, or other kernel memory disclosure primitive.\nI:N - The cmd pointer is NULL, not a freed or attacker-controlled object, so the load cannot corrupt kernel heap, overwrite function pointers, or hijack control flow. The fix is only an early NULL return; there is no write primitive.\nA:H - Dereferencing NULL cmd in qla_chk_edif_rx_sa_delete_pending() from the response-queue interrupt or qla_do_work() context oopses or panics the host, taking down all storage served by the adapter. A fabric peer can repeat this on aborted I/O."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T14:39:25.537Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/e479e9b148456905d12711411484b94083c8ff58"
        },
        {
          "url": "https://git.kernel.org/stable/c/2191b0034a2f1307d421782e6eceddf8eec9e7f6"
        },
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          "url": "https://git.kernel.org/stable/c/de0c8ef3b900c5e971c82ef38c6f5c22c5f3d8c1"
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          "url": "https://git.kernel.org/stable/c/96eb8a3fc9f7fe7ba32679fcf1d2fd7d251e7a8b"
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        },
        {
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        },
        {
          "url": "https://git.kernel.org/stable/c/c20ee380ca59c5a8646750c4849969a815924e2e"
        }
      ],
      "title": "scsi: qla2xxx: edif: Fix NULL pointer deref in RX SA delete check",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89863",
    "datePublished": "2026-09-16T10:31:34.377Z",
    "dateReserved": "2026-09-11T19:38:34.771Z",
    "dateUpdated": "2026-09-16T14:39:25.537Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-43G8-FHX4-JF78

CVE-2026-89863 (GCVE-0-2026-89863)

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