{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/sof/ipc4-control.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c29f5b4498894aebb2f87b1a29bb320e2f9348f9",
              "status": "affected",
              "version": "2a28b5240f2b328495c6565d277f438dbc583d61",
              "versionType": "git"
            },
            {
              "lessThan": "5bdfeccb7fbf6e000fc783cd8412732e67c1ad0c",
              "status": "affected",
              "version": "2a28b5240f2b328495c6565d277f438dbc583d61",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/sof/ipc4-control.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.0"
            },
            {
              "lessThan": "7.0",
              "status": "unaffected",
              "version": "0",
              "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": "7.1.5",
                  "versionStartIncluding": "7.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "7.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: ipc4-control: Validate notification payload size\n\nValidate MODULE_NOTIFICATION payload length before reading\nbytes/channel data in control update handling."
        }
      ],
      "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 flaw is reached when the on-chip SOF DSP delivers IPC4 MODULE_NOTIFICATION messages to the host via mailbox/IRQ; exploitation requires local access to a SOF-equipped system using the ALSA control interface, not remote network delivery.\nAC:L - A local attacker can repeatedly issue ALSA control ioctls that cause the DSP to emit control-change notifications; no race or victim state beyond attacker-driven audio IPC is needed to supply inconsistent num_elems versus event_data_size.\nPR:L - Only an unprivileged local user able to open ALSA control devices on SOF hardware (typical on Intel laptop/desktop audio stacks) is required; root or init-namespace capabilities are not needed to drive the vulnerable notification path.\nUI:N - No action by a separate victim is required; the attacker triggers DSP notifications through their own ALSA control operations and the kernel processes malformed firmware payloads automatically.\nS:U - Impact stays within the host kernel audio subsystem on the same machine; heap disclosure or control-cache corruption does not cross VM, container, or IOMMU boundaries into another security authority.\nC:H - Missing payload-length validation lets num_elems drive memcpy and chanv parsing beyond the kmalloc IPC notification buffer, causing out-of-bounds kernel heap reads that can disclose adjacent memory contents.\nI:H - Untrusted num_elems values cause kernel memory corruption by copying out-of-bounds firmware/heap bytes into control caches via memcpy and chanv updates, providing bounded but attacker-influenced kernel writes usable in further exploitation.\nA:H - Large num_elems values trigger extensive out-of-bounds accesses during IRQ-threaded IPC notification handling, which can provoke KASAN faults, unhandled page faults, kernel oops, or panic under realistic SOF workloads."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:42:35.730Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c29f5b4498894aebb2f87b1a29bb320e2f9348f9"
        },
        {
          "url": "https://git.kernel.org/stable/c/5bdfeccb7fbf6e000fc783cd8412732e67c1ad0c"
        }
      ],
      "title": "ASoC: SOF: ipc4-control: Validate notification payload size",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72303",
    "datePublished": "2026-08-15T05:55:21.667Z",
    "dateReserved": "2026-08-09T03:40:39.918Z",
    "dateUpdated": "2026-08-17T05:42:35.730Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}