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CVE-2026-89846 (GCVE-0-2026-89846)

Vulnerability from cvelistv5 – Published: 2026-09-16 10:31 – Updated: 2026-09-16 14:39
VLAI
Title
scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read In qla2x00_status_entry(), the FWI2 status path advances sense_data and shrinks par_sense_len by rsp_info_len: if (IS_FWI2_CAPABLE(ha)) { sense_data += rsp_info_len; par_sense_len -= rsp_info_len; } rsp_info_len is a 32-bit value taken directly from the target's FCP response (sf.rsp_data_len), while par_sense_len is the IOCB data area size (28 bytes for 24xx, 60 bytes for 29xx). A hostile or buggy target reporting an rsp_info_len larger than par_sense_len makes the unsigned subtraction underflow to a huge value and advances sense_data out of bounds. The underflowed par_sense_len then defeats the cap in qla2x00_handle_sense(): if (sense_len > par_sense_len) sense_len = par_sense_len; memcpy(cp->sense_buffer, sense_data, sense_len); so the memcpy reads up to SCSI_SENSE_BUFFERSIZE bytes from the out-of-bounds sense_data pointer, leaking adjacent response-ring/heap memory into the command's sense buffer. Clamp rsp_info_len to par_sense_len before the subtraction so par_sense_len can never underflow and sense_data stays within the IOCB data area. The fix sits before the comp_status switch, covering both qla2x00_handle_sense() call sites.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 , < 125b12861c726e58448bb95d55b04851fb131d1f (git)
Affected: 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 , < e57ace988bda5693f7b3645f652ea4b4220870ee (git)
Affected: 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 , < 6b08c0cb110a1fba92f99d655020198489699815 (git)
Affected: 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 , < be75ab791c9b3baca66c70ce03443afebc83acda (git)
Affected: 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 , < ebc41dfc59d190956e0113e8bd90c28f6f21e8b9 (git)
Affected: 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 , < d7f7746ff031ae45724881261804f4bf5317c985 (git)
Affected: 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 , < f6e8977bce887481b2b2b0e2e14a791270741cfb (git)
Affected: 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 , < ca6d880d6c70cb7946e7b3e05d7285f271b6d99e (git)
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Linux Linux Affected: 2.6.36
Unaffected: 0 , < 2.6.36 (semver)
Unaffected: 5.10.270 , ≤ 5.10.* (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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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read\n\nIn qla2x00_status_entry(), the FWI2 status path advances sense_data and\nshrinks par_sense_len by rsp_info_len:\n\n\tif (IS_FWI2_CAPABLE(ha)) {\n\t\tsense_data += rsp_info_len;\n\t\tpar_sense_len -= rsp_info_len;\n\t}\n\nrsp_info_len is a 32-bit value taken directly from the target\u0027s FCP\nresponse (sf.rsp_data_len), while par_sense_len is the IOCB data area\nsize (28 bytes for 24xx, 60 bytes for 29xx). A hostile or buggy target\nreporting an rsp_info_len larger than par_sense_len makes the unsigned\nsubtraction underflow to a huge value and advances sense_data out of\nbounds.\n\nThe underflowed par_sense_len then defeats the cap in\nqla2x00_handle_sense():\n\n\tif (sense_len \u003e par_sense_len)\n\t\tsense_len = par_sense_len;\n\tmemcpy(cp-\u003esense_buffer, sense_data, sense_len);\n\nso the memcpy reads up to SCSI_SENSE_BUFFERSIZE bytes from the\nout-of-bounds sense_data pointer, leaking adjacent response-ring/heap\nmemory into the command\u0027s sense buffer.\n\nClamp rsp_info_len to par_sense_len before the subtraction so\npar_sense_len can never underflow and sense_data stays within the IOCB\ndata area. The fix sits before the comp_status switch, covering both\nqla2x00_handle_sense() call sites."
        }
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              "lang": "en",
              "value": "AV:N - qla2xxx builds initiator status IOCBs from a remote Fibre Channel or FCoE target\u0027s FCP_RSP; QLogic CNAs speak FCoE and SAN fabrics are stretched across sites via FCIP/inter-fabric routing, so a malicious or compromised target delivers the crafted rsp_data_len over the storage network with no local access.\nAC:L - A hostile target fully controls FCP_RSP (SS_RESPONSE_INFO_LEN_VALID, rsp_data_len, sense_len, CHECK CONDITION, rsp_info[3]==0) and can return them on ordinary initiator I/O such as INQUIRY during fabric scan; no race, rare config, or victim state beyond a FWI2-capable HBA is required.\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 out-of-bounds read and any 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:H - Attacker-controlled 32-bit rsp_info_len advances sense_data out of the 28-byte IOCB data area and underflows par_sense_len so qla2x00_handle_sense() copies up to SCSI_SENSE_BUFFERSIZE (96) bytes of adjacent response-ring or kernel memory into the command sense buffer, which userspace can read via SCSI completion, SG_IO, and BSG.\nI:N - The memcpy destination is the in-bounds SCSI sense buffer already capped at SCSI_SENSE_BUFFERSIZE; this is a source over-read only, with no out-of-bounds write, use-after-free, or control-flow hijack primitive.\nA:H - Adding a 32-bit attacker-chosen rsp_info_len to sense_data yields a wild kernel pointer; memcpy from an unmapped address in the interrupt-context response-queue path oopses or panics the host, and the target can repeat this on every command."
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      "title": "scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read",
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    "datePublished": "2026-09-16T10:31:20.306Z",
    "dateReserved": "2026-09-11T19:38:34.770Z",
    "dateUpdated": "2026-09-16T14:39:14.466Z",
    "state": "PUBLISHED"
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            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read\n\nIn qla2x00_status_entry(), the FWI2 status path advances sense_data and\nshrinks par_sense_len by rsp_info_len:\n\n\tif (IS_FWI2_CAPABLE(ha)) {\n\t\tsense_data += rsp_info_len;\n\t\tpar_sense_len -= rsp_info_len;\n\t}\n\nrsp_info_len is a 32-bit value taken directly from the target\u0027s FCP\nresponse (sf.rsp_data_len), while par_sense_len is the IOCB data area\nsize (28 bytes for 24xx, 60 bytes for 29xx). A hostile or buggy target\nreporting an rsp_info_len larger than par_sense_len makes the unsigned\nsubtraction underflow to a huge value and advances sense_data out of\nbounds.\n\nThe underflowed par_sense_len then defeats the cap in\nqla2x00_handle_sense():\n\n\tif (sense_len \u003e par_sense_len)\n\t\tsense_len = par_sense_len;\n\tmemcpy(cp-\u003esense_buffer, sense_data, sense_len);\n\nso the memcpy reads up to SCSI_SENSE_BUFFERSIZE bytes from the\nout-of-bounds sense_data pointer, leaking adjacent response-ring/heap\nmemory into the command\u0027s sense buffer.\n\nClamp rsp_info_len to par_sense_len before the subtraction so\npar_sense_len can never underflow and sense_data stays within the IOCB\ndata area. The fix sits before the comp_status switch, covering both\nqla2x00_handle_sense() call sites."
          }
        ],
        "id": "CVE-2026-89846",
        "lastModified": "2026-09-16T15:18:12.823",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.1,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 5.2,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
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        },
        "published": "2026-09-16T11:16:51.853",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/125b12861c726e58448bb95d55b04851fb131d1f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6b08c0cb110a1fba92f99d655020198489699815"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/be75ab791c9b3baca66c70ce03443afebc83acda"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ca6d880d6c70cb7946e7b3e05d7285f271b6d99e"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/d7f7746ff031ae45724881261804f4bf5317c985"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/e57ace988bda5693f7b3645f652ea4b4220870ee"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ebc41dfc59d190956e0113e8bd90c28f6f21e8b9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/f6e8977bce887481b2b2b0e2e14a791270741cfb"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-19T01:44:24Z",
      "cve": "CVE-2026-89846",
      "id": "CVE-2026-89846",
      "initial_release_date": "2026-09-17T16:37:15Z",
      "product_status:known_affected": "347",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-89846",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-89846.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.


Related by attack behaviour

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.