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              "value": "AV:L - Exploitation requires local mmap() on the ALSA hwdep character device (/dev/snd/hwC*D*); the path is open\u2192SNDRV_HWDEP_IOCTL_DSP_LOAD\u2192mmap\u2192snd_us428ctls_vm_fault, with no network or remote packet handler involved.\nAC:L - The attacker fully controls the mmap() page offset (vmf-\u003epgoff); any offset beyond the single-page shared buffer deterministically maps an attacker-chosen kernel page read-write or oopses, with no race or uncontrollable memory-layout dependency.\nPR:L - The driver performs no capability checks on hwdep open, ioctl, or mmap; any unprivileged local user who can access the hwdep node (typically via the audio group on desktop distros) can reach the fault handler after loading the FPGA image.\nUI:N - All exploitation steps\u2014opening the hwdep node, loading FPGA firmware via DSP_LOAD ioctl, and mmap with a crafted offset\u2014are performed by the attacker; no discretionary victim action beyond the device being present in the environment is required.\nS:U - Impact is arbitrary read/write of host kernel memory leading to local privilege escalation within the same kernel security authority; it does not cross a VM, container, or IOMMU security boundary.\nC:H - Unbounded pgoff arithmetic maps arbitrary kernel struct pages into the attacker\u0027s address space; the VMA is not read-only, giving attacker-controlled read access to any reachable kernel page selected via the mmap offset.\nI:H - The same unbounded mmap fault path installs attacker-chosen kernel pages into a read-write userspace mapping, enabling arbitrary kernel memory writes and heap corruption primitives suitable for privilege escalation or code execution.\nA:H - Large mmap offsets dereference unpopulated vmemmap regions causing kernel paging faults and oops (demonstrated on arm64); arbitrary kernel page writes can also panic the system or destabilize the kernel."
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        "dateUpdated": "2026-08-25T05:41:03.118Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ad6fedea65c6e90eda00d716c8bf20cdc437ed10"
        },
        {
          "url": "https://git.kernel.org/stable/c/10a87401fb3148c388e55df0148295b3b137da07"
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        {
          "url": "https://git.kernel.org/stable/c/34ab56ed854baa73a731cfd99af689f0b1bac444"
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          "url": "https://git.kernel.org/stable/c/4208db2453e1ea71b8048a5b7802360cb29a53f1"
        },
        {
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        },
        {
          "url": "https://git.kernel.org/stable/c/2ca1eea3cd17930daffe9e429a7c89232036ec24"
        }
      ],
      "title": "ALSA: usx2y: bound the hwdep mmap fault offset",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74641",
    "datePublished": "2026-08-22T15:32:19.696Z",
    "dateReserved": "2026-08-15T05:44:03.922Z",
    "dateUpdated": "2026-10-16T19:06:04.565Z",
    "state": "PUBLISHED"
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              "version": "0",
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              "version": "5.15.221",
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              "version": "6.1.188",
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              "status": "unaffected",
              "version": "6.6.157",
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              "status": "unaffected",
              "version": "6.12.110",
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              "status": "unaffected",
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              "version": "7.2.5",
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            },
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              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
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      ],
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                  "versionEndExcluding": "5.10.270",
                  "versionStartIncluding": "2.6.36",
                  "vulnerable": true
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      ],
      "descriptions": [
        {
          "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "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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        "dateUpdated": "2026-10-19T08:53:39.169Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/125b12861c726e58448bb95d55b04851fb131d1f"
        },
        {
          "url": "https://git.kernel.org/stable/c/e57ace988bda5693f7b3645f652ea4b4220870ee"
        },
        {
          "url": "https://git.kernel.org/stable/c/6b08c0cb110a1fba92f99d655020198489699815"
        },
        {
          "url": "https://git.kernel.org/stable/c/be75ab791c9b3baca66c70ce03443afebc83acda"
        },
        {
          "url": "https://git.kernel.org/stable/c/ebc41dfc59d190956e0113e8bd90c28f6f21e8b9"
        },
        {
          "url": "https://git.kernel.org/stable/c/d7f7746ff031ae45724881261804f4bf5317c985"
        },
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          "url": "https://git.kernel.org/stable/c/f6e8977bce887481b2b2b0e2e14a791270741cfb"
        },
        {
          "url": "https://git.kernel.org/stable/c/ca6d880d6c70cb7946e7b3e05d7285f271b6d99e"
        }
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      "title": "scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read",
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    "cveId": "CVE-2026-89846",
    "datePublished": "2026-09-16T10:31:20.306Z",
    "dateReserved": "2026-09-11T19:38:34.770Z",
    "dateUpdated": "2026-10-19T08:53:39.169Z",
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