CVE-2026-89859 (GCVE-0-2026-89859)

Vulnerability from cvelistv5 – Published: 2026-09-16 10:31 – Updated: 2026-09-21 13:15
VLAI
Title
scsi: qla2xxx: Zero dport diagnostics buffer to avoid info leak
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Zero dport diagnostics buffer to avoid info leak qla2x00_do_dport_diagnostics() allocates the qla_dport_diag response buffer with kmalloc_obj() (non-zeroing) and, on success, copies the full sizeof(*dd) back to user space via sg_copy_from_buffer(). The inbound sg_copy_to_buffer() only fills as many bytes as the user request payload provides, and qla26xx_dport_diagnostics() zeroes only dd->buf. The options and unused[] fields are therefore copied out uninitialized, leaking kernel heap contents to user space. Allocate with kzalloc_obj(), matching qla2x00_do_dport_diagnostics_v2().
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ec89146215d124c429bff84b498dccdc4919ffa7 , < d6e2411516bb95e52cb74c9c56b60ad2548a2730 (git)
Affected: ec89146215d124c429bff84b498dccdc4919ffa7 , < 9fc03be982763a131913f84fe73b240ae45bca37 (git)
Affected: ec89146215d124c429bff84b498dccdc4919ffa7 , < a152edab3854f01dd2daf3eaf8f32cbabdb3834e (git)
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Linux Linux Affected: 4.8
Unaffected: 0 , < 4.8 (semver)
Unaffected: 6.18.53 , ≤ 6.18.* (semver)
Unaffected: 7.2.5 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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        {
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          "product": "Linux",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_bsg.c"
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Zero dport diagnostics buffer to avoid info leak\n\nqla2x00_do_dport_diagnostics() allocates the qla_dport_diag response\nbuffer with kmalloc_obj() (non-zeroing) and, on success, copies the full\nsizeof(*dd) back to user space via sg_copy_from_buffer(). The inbound\nsg_copy_to_buffer() only fills as many bytes as the user request payload\nprovides, and qla26xx_dport_diagnostics() zeroes only dd-\u003ebuf. The\noptions and unused[] fields are therefore copied out uninitialized,\nleaking kernel heap contents to user space.\n\nAllocate with kzalloc_obj(), matching qla2x00_do_dport_diagnostics_v2()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-21T13:15:09.461Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/a152edab3854f01dd2daf3eaf8f32cbabdb3834e"
        }
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      "title": "scsi: qla2xxx: Zero dport diagnostics buffer to avoid info leak",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89859",
    "datePublished": "2026-09-16T10:31:31.554Z",
    "dateReserved": "2026-09-11T19:38:34.771Z",
    "dateUpdated": "2026-09-21T13:15:09.461Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-09-25",
      "epss": "0.00206",
      "percentile": "0.09485"
    },
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      "source": "Microsoft CSAF VEX",
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      "title": "scsi: qla2xxx: Zero dport diagnostics buffer to avoid info leak",
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      "version": "2"
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    "nvd": {
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              }
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        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Zero dport diagnostics buffer to avoid info leak\n\nqla2x00_do_dport_diagnostics() allocates the qla_dport_diag response\nbuffer with kmalloc_obj() (non-zeroing) and, on success, copies the full\nsizeof(*dd) back to user space via sg_copy_from_buffer(). The inbound\nsg_copy_to_buffer() only fills as many bytes as the user request payload\nprovides, and qla26xx_dport_diagnostics() zeroes only dd-\u003ebuf. The\noptions and unused[] fields are therefore copied out uninitialized,\nleaking kernel heap contents to user space.\n\nAllocate with kzalloc_obj(), matching qla2x00_do_dport_diagnostics_v2()."
          }
        ],
        "id": "CVE-2026-89859",
        "lastModified": "2026-09-21T14:17:27.630",
        "metrics": {},
        "published": "2026-09-16T11:16:53.830",
        "references": [
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
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      "cve": "CVE-2026-89859",
      "id": "CVE-2026-89859",
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      "product_status:known_affected": "343",
      "product_status:known_not_affected": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-89859",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-89859.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.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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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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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.