{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/sof/ipc3-control.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1dc25a3e06364f48c4ef06016852f8b82425151a",
              "status": "affected",
              "version": "10f461d79c2d1afb22344986cc1b4631169cf25e",
              "versionType": "git"
            },
            {
              "lessThan": "ee781058cd4d71e4449f41cbe6a3b8c59daa2c51",
              "status": "affected",
              "version": "10f461d79c2d1afb22344986cc1b4631169cf25e",
              "versionType": "git"
            },
            {
              "lessThan": "ecf67f1302f2080b4d241b973364aacda70ad740",
              "status": "affected",
              "version": "10f461d79c2d1afb22344986cc1b4631169cf25e",
              "versionType": "git"
            },
            {
              "lessThan": "d3abaedf6a58469610136d2dace1a85cddf7afcf",
              "status": "affected",
              "version": "10f461d79c2d1afb22344986cc1b4631169cf25e",
              "versionType": "git"
            },
            {
              "lessThan": "2a591bf6fd41fd14bdae689aafac4a9ee702c23c",
              "status": "affected",
              "version": "10f461d79c2d1afb22344986cc1b4631169cf25e",
              "versionType": "git"
            },
            {
              "lessThan": "390aa4c9339bb0ec0bc8d554e830faf93ca9d49e",
              "status": "affected",
              "version": "10f461d79c2d1afb22344986cc1b4631169cf25e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/sof/ipc3-control.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
              "lessThan": "5.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.178",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.145",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.97",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: ipc3-control: Validate size in snd_sof_update_control\n\nIn snd_sof_update_control(), firmware-provided cdata-\u003enum_elems is\nchecked against local_cdata-\u003edata-\u003esize but never against the actual\nallocation size. If local_cdata-\u003edata-\u003esize was previously set to an\ninconsistent value, the memcpy could write past the allocated buffer.\n\nAdd a bounds check to ensure num_elems fits within the available space\nin the ipc_control_data allocation before copying."
        }
      ],
      "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 on local SOF/IPC3 systems when DSP firmware sends SOF_IPC_GLB_COMP_MSG notifications that flow through sof_ipc3_rx_msg() to sof_ipc3_control_update() and snd_sof_update_control(); setup uses local ALSA ioctl/TLV on /dev/snd/controlC*, not remote network input.\nAC:L - An attacker can create the inconsistent local_cdata-\u003edata-\u003esize via ALSA bytes put/get IPC to the DSP and then reliably provoke matching firmware control notifications by driving audio activity; no uncontrollable memory layout or victim timing is required.\nPR:L - Reaching SOF binary kcontrols requires only local ALSA access to sound control devices, which is typically granted to unprivileged users in the audio group without init-namespace root or CAP_SYS_ADMIN; user namespaces do not grant this hardware path.\nUI:N - No separate victim action is needed; exploitation uses the attacker\u0027s own local ALSA clients and audio sessions to reach the vulnerable IPC3 control-update path on affected SOF hardware.\nS:U - Impact is kernel heap corruption and privilege escalation within the host kernel security domain; it does not cross VM, container, or IOMMU boundaries into another authority.\nC:H - The unchecked memcpy can write past the ipc_control_data kzalloc buffer, corrupting adjacent kernel heap objects and enabling information disclosure or further memory corruption primitives beyond the intended control cache.\nI:H - This is an out-of-bounds kernel heap write that can overwrite adjacent structures and be leveraged for control-flow hijack or local privilege escalation, not merely limited or benign data modification.\nA:H - Writing beyond the allocated ipc_control_data buffer can corrupt critical kernel heap metadata or objects and cause kernel oops/panic or system instability, satisfying high availability impact for kernel crashes."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:42:10.529Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1dc25a3e06364f48c4ef06016852f8b82425151a"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee781058cd4d71e4449f41cbe6a3b8c59daa2c51"
        },
        {
          "url": "https://git.kernel.org/stable/c/ecf67f1302f2080b4d241b973364aacda70ad740"
        },
        {
          "url": "https://git.kernel.org/stable/c/d3abaedf6a58469610136d2dace1a85cddf7afcf"
        },
        {
          "url": "https://git.kernel.org/stable/c/2a591bf6fd41fd14bdae689aafac4a9ee702c23c"
        },
        {
          "url": "https://git.kernel.org/stable/c/390aa4c9339bb0ec0bc8d554e830faf93ca9d49e"
        }
      ],
      "title": "ASoC: SOF: ipc3-control: Validate size in snd_sof_update_control",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72261",
    "datePublished": "2026-08-15T05:54:49.022Z",
    "dateReserved": "2026-08-09T03:40:39.915Z",
    "dateUpdated": "2026-08-17T05:42:10.529Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}