{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "cf393babb37a1679a1ec1d864df1090353465e23"
            },
            {
              "fixed": "41a766c647294842c9b17672449f8e011048cba9"
            },
            {
              "fixed": "ce836587e594af39ff048d9b29dee0f5f10692c9"
            },
            {
              "fixed": "feff0251386aa6bb180a0a1cf7c1f91ba868113d"
            },
            {
              "fixed": "c9f6768515818d71bdfc20119a81f3332c53b9c6"
            },
            {
              "fixed": "e4d3386b74fba8e01280484b67ee481ece00201e"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.6.0"
            },
            {
              "fixed": "6.6.142"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.92"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.34"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64134.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: pcm: Don't setup bogus iov_iter for silencing\n\nAt transition to the iov_iter for PCM data transfer, we blindly\napplied the iov_iter setup also for silencing (i.e. data = NULL), and\nit leads to a calculation of bogus iov_iter.  Fortunately this didn't\ncause troubles on most of architectures but it goes wrong on RISC-V\nnow, causing a NULL dereference.\n\nHandle the NULL data case to treat the silencing in interleaved_copy()\nfor addressing the bug above.  noninterleaved_copy() has already the\nNULL data handling, so it doesn't need changes.",
  "id": "CVE-2026-64134",
  "modified": "2026-08-12T03:51:21.198103026Z",
  "published": "2026-07-19T15:40:28.974Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/41a766c647294842c9b17672449f8e011048cba9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9f6768515818d71bdfc20119a81f3332c53b9c6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce836587e594af39ff048d9b29dee0f5f10692c9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e4d3386b74fba8e01280484b67ee481ece00201e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/feff0251386aa6bb180a0a1cf7c1f91ba868113d"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64134.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64134"
    },
    {
      "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: pcm: Don't setup bogus iov_iter for silencing"
}