{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "326bbc348298ab0946c5560defe024a5f6ef28bb"
            },
            {
              "fixed": "25a867aa5e67a84333fa6e5c21292c5bcff86b90"
            },
            {
              "fixed": "a22356d1f731553e99aa2707dbd38c659bdd28d8"
            },
            {
              "fixed": "bdb640be82e645e2828731648f485224d0c2587b"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.16.0"
            },
            {
              "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-2026-72446.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: qcom: reject stream disable with no active interface\n\nhandle_uaudio_stream_req() resolves an interface index with\ninfo_idx_from_ifnum(), which returns -EINVAL when no interface matches.\nThe enable branch and the response: cleanup label both guard against a\nnegative index, but the disable branch does not: it forms\ninfo = \u0026uadev[pcm_card_num].info[info_idx] and dereferences it.\n\nuadev[].info is a pointer allocated only when a stream is first enabled,\nso a negative info_idx on the disable path is unsafe in two ways:\n\n - If the card was never enabled, .info is NULL and \u0026info[-EINVAL] is a\n   wild pointer; reading info-\u003edata_ep_pipe faults (kernel oops).\n\n - If the card was enabled at least once (.info allocated) and the\n   disable names an interface that does not match, \u0026info[-EINVAL] points\n   before the allocation; info-\u003edata_ep_pipe / info-\u003esync_ep_pipe are an\n   out-of-bounds slab read and, when non-zero, an out-of-bounds 4-byte\n   write (both pipe fields are cleared to 0). That is memory corruption,\n   not just a NULL dereference.\n\nThe request is reachable from unprivileged local userspace over\nAF_QIPCRTR. Reject a disable request with no resolved interface, matching\nthe guard the enable path already has.",
  "id": "CVE-2026-72446",
  "modified": "2026-08-18T03:31:16.329059155Z",
  "published": "2026-08-15T05:56:56.470Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25a867aa5e67a84333fa6e5c21292c5bcff86b90"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a22356d1f731553e99aa2707dbd38c659bdd28d8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bdb640be82e645e2828731648f485224d0c2587b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72446.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72446"
    },
    {
      "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": "ALSA: usb-audio: qcom: reject stream disable with no active interface"
}