CVE-2026-64133 (GCVE-0-2026-64133)
Vulnerability from cvelistv5
Published
2026-07-19 15:40
Modified
2026-08-05 12:39
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: asihpi: Fix potential OOB array access at reading cache find_control() to retrieve a cached info accesses the array with the given index blindly, which may lead to an OOB array access. Add a sanity check for avoiding it.
References
Impacted products
Vendor Product Version
Linux Linux Version: 719f82d3987aad4cc9f46d19c35f362672545cad
Version: 719f82d3987aad4cc9f46d19c35f362672545cad
Version: 719f82d3987aad4cc9f46d19c35f362672545cad
Version: 719f82d3987aad4cc9f46d19c35f362672545cad
Version: 719f82d3987aad4cc9f46d19c35f362672545cad
Version: 719f82d3987aad4cc9f46d19c35f362672545cad
Version: 719f82d3987aad4cc9f46d19c35f362672545cad
Version: 719f82d3987aad4cc9f46d19c35f362672545cad
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/pci/asihpi/hpicmn.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
            {
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.35"
            },
            {
              "lessThan": "2.6.35",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.142",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.92",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.258",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "5.15.209",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
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                {
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                  "versionEndExcluding": "6.1.175",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.142",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
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                {
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                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "7.0.11",
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                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: asihpi: Fix potential OOB array access at reading cache\n\nfind_control() to retrieve a cached info accesses the array with the\ngiven index blindly, which may lead to an OOB array access.\nAdd a sanity check for avoiding it."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is reached only via local ALSA hwdep ioctl (`HPI_IOCTL_LINUX` on `/dev/snd/hwC*D0`) or equivalent in-kernel `hpi_send_recv()` calls; there is no network, Bluetooth, or physical-device attack surface for this PCI audio driver path.\nAC:L - On systems with an AudioScience adapter and control cache enabled, an attacker fully controls `obj_index` in the HPI control message and can reliably trigger the out-of-bounds access with a single crafted ioctl without races or victim-dependent timing.\nPR:L - Exploitation requires only local access to the ALSA sound/hwdep device nodes (typically any unprivileged user in the `audio` group), not real root or capabilities that cannot be obtained through user namespaces.\nUI:N - No victim interaction is required; the attacker opens the hwdep device and issues crafted HPI control messages directly without needing another user to perform any action.\nS:U - Impact is confined to kernel memory within the same security authority (local privilege escalation / kernel crash); it does not cross VM, IOMMU, or sandbox boundaries.\nC:H - The out-of-bounds read of `p_cache-\u003ep_info[control_index]` returns adjacent kernel heap pointers/data, and `hpi_check_control_cache_single()` dereferences the corrupted pointer and copies interpreted fields into the ioctl response buffer, enabling kernel information disclosure.\nI:H - After the out-of-bounds pointer load, follow-on cache handling dereferences attacker-influenced kernel addresses for reads and, on SET_STATE or PAD control paths, performs writes (e.g., null-termination), providing exploitable kernel memory corruption beyond a simple crash.\nA:H - A large out-of-bounds `obj_index` can read unmapped memory and cause a kernel oops/panic, and invalid pointer dereferences in the cache-handling path can crash or hang the system."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:39:35.138Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e060e21fe9cca1e5eafd8a1c597026577771e8d9"
        },
        {
          "url": "https://git.kernel.org/stable/c/34d0d492a2812b9289af14bca3573a89275965b2"
        },
        {
          "url": "https://git.kernel.org/stable/c/ffa29cea7bf9a4ef2ea8084967f142e0301ac670"
        },
        {
          "url": "https://git.kernel.org/stable/c/7b6f8c8eb93f02a74b1de8e521c0952af10d1f43"
        },
        {
          "url": "https://git.kernel.org/stable/c/8778386e4387b28f2bf8425d7ffc667c6294457f"
        },
        {
          "url": "https://git.kernel.org/stable/c/61c5017c64e2ac9e10b70b14b17a079dbc0a805f"
        },
        {
          "url": "https://git.kernel.org/stable/c/7d107239935793995bdc6cf29bb99e180bde4c28"
        },
        {
          "url": "https://git.kernel.org/stable/c/7b7d6572145c1dab2dd9bfb550b188e5f0ff3c3f"
        }
      ],
      "title": "ALSA: asihpi: Fix potential OOB array access at reading cache",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64133",
    "datePublished": "2026-07-19T15:40:28.277Z",
    "dateReserved": "2026-07-19T07:54:57.036Z",
    "dateUpdated": "2026-08-05T12:39:35.138Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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