{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "67ec2a091630c28ea8d05db2bd7178a05b04b7e6"
            },
            {
              "fixed": "1adde1941bba7b0d7104b86ed819d48d81cb0ad9"
            },
            {
              "fixed": "eaa67e139c9217099e2a7b717aeeb46c65de3494"
            },
            {
              "fixed": "121577383b5cf221e86581e0f2bcca4c66f17469"
            },
            {
              "fixed": "f4933e1d11b97b6a0951648b7c3e53850e1b33a9"
            },
            {
              "fixed": "fd46668d538993218eea19c6925c868ac0f2630c"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.18.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72262.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: ipc3-control: Fix heap overflow in bytes_ext put/get\n\nThe ipc_control_data buffer is allocated as kzalloc(max_size), where\nmax_size covers the entire struct sof_ipc_ctrl_data including its\nflexible array payload. However, the bounds checks in bytes_ext_put\nand _bytes_ext_get compared user data lengths against max_size\ndirectly, ignoring that cdata-\u003edata sits at an offset of\nsizeof(struct sof_ipc_ctrl_data) bytes into the allocation.\n\nThis allowed writing up to sizeof(struct sof_ipc_ctrl_data) bytes past\nthe end of the heap buffer from unprivileged userspace via the ALSA TLV\nkcontrol interface, and similarly allowed over-reading adjacent heap\ndata on the get path.\n\nFix all bounds checks to subtract sizeof(*cdata) from max_size so they\nreflect the actual space available at the cdata-\u003edata offset. Also fix\nthe error-path restore in bytes_ext_put which wrote to cdata-\u003edata\ninstead of cdata, causing the same overflow.",
  "id": "CVE-2026-72262",
  "modified": "2026-08-18T03:31:06.819033101Z",
  "published": "2026-08-15T05:54:49.635Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/121577383b5cf221e86581e0f2bcca4c66f17469"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1adde1941bba7b0d7104b86ed819d48d81cb0ad9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eaa67e139c9217099e2a7b717aeeb46c65de3494"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f4933e1d11b97b6a0951648b7c3e53850e1b33a9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fd46668d538993218eea19c6925c868ac0f2630c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72262.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72262"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ASoC: SOF: ipc3-control: Fix heap overflow in bytes_ext put/get"
}