{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d"
            },
            {
              "fixed": "f188a400dd5285fec5a84548fe8dca49eee01155"
            },
            {
              "fixed": "d83a9de7cecd401c3d3e00ed6371194dcd7313e4"
            },
            {
              "fixed": "be15b8da4a82cf1e1f9880b2661b90770606eec1"
            },
            {
              "fixed": "73f860489e3be2245598d1819226304fc5b87291"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "f2283680a80571ca82d710bc6ecd8f8beac67d63"
            },
            {
              "last_affected": "9f297df20d93411c0b4ddad7f88ba04a7cd36e77"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.15.145"
            },
            {
              "fixed": "5.16"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.1.71"
            },
            {
              "fixed": "6.2"
            }
          ],
          "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": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.51"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89794.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: zero pipe read compound padding\n\nCompound response handling extends the last response iov to an eight-byte\nboundary.\n\nsmb2_read_pipe() allocates only the payload size, so the alignment padding\ncan expose up to seven bytes of uninitialized kernel heap memory.\n\nAllocate the aligned size and clear the unused tail before pinning the\nresponse buffer.",
  "id": "CVE-2026-89794",
  "modified": "2026-09-18T03:30:43.710060872Z",
  "published": "2026-09-16T10:30:25.592Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/73f860489e3be2245598d1819226304fc5b87291"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/be15b8da4a82cf1e1f9880b2661b90770606eec1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d83a9de7cecd401c3d3e00ed6371194dcd7313e4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f188a400dd5285fec5a84548fe8dca49eee01155"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89794.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89794"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "ksmbd: zero pipe read compound padding"
}