{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "4342306f0f0d5ff4315a204d315c1b51b914fca5"
            },
            {
              "fixed": "7d60a4c49af4d5cb88aa7cbf998d0408bd415055"
            },
            {
              "fixed": "cd40eee4923d104ebec9ac7513b971bc441e431d"
            },
            {
              "fixed": "77d8efd04745cda23858546afdbd9d07b591758e"
            },
            {
              "fixed": "0f699ddb290a24b37e1bc9bf1e3c9dbccf564bea"
            },
            {
              "fixed": "376ee45659a4b943df672ad275c63da00655f929"
            },
            {
              "fixed": "4a1b39b2e10eb8de86265e80cf2be4396bc1dce4"
            },
            {
              "fixed": "35d1ea92c7d946e2ebdbe36cdb2c969c8704bebd"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.15.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.109"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89616.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: fix info-leak on partial LZNT decompress in ni_read_frame()\n\nni_read_frame() decompresses an LZNT $DATA frame into the vmapped target\npages and then trusts decompress_lznt()'s return value:\n\n  unc_size = decompress_lznt(frame_ondisk, ondisk_size, frame_mem,\n                             frame_size);\n  if ((ssize_t)unc_size \u003c 0)        err = unc_size;\n  else if (!unc_size || unc_size \u003e frame_size)  err = -EINVAL;\n\ndecompress_lznt() stops as soon as the compressed stream is exhausted\n(e.g. a zero chunk header) and returns the number of bytes it actually\nwrote, which may be far less than frame_size. The bytes between unc_size\nand frame_size are never written. The only memset() that follows zeroes\nthe region beyond i_valid; when the frame lies entirely within the file's\nvalid size that memset() does not run, so the gap retains whatever was in\nthe just-vmapped pages. All pages are then marked uptodate and returned\nto userspace, disclosing uninitialized (recently-freed) kernel page\nmemory. A crafted compressed file whose stream decompresses to only a few\nbytes leaks the remainder of every frame on a plain read(2), which is\nenough to recover kernel pointers and defeat KASLR.\n\nZero the [unc_size, frame_size) tail immediately after a successful LZNT\ndecompress so the remainder reads back as zero.",
  "id": "CVE-2026-89616",
  "modified": "2026-09-16T03:30:18.164076773Z",
  "published": "2026-09-11T19:45:16.064Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f699ddb290a24b37e1bc9bf1e3c9dbccf564bea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/35d1ea92c7d946e2ebdbe36cdb2c969c8704bebd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/376ee45659a4b943df672ad275c63da00655f929"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4a1b39b2e10eb8de86265e80cf2be4396bc1dce4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/77d8efd04745cda23858546afdbd9d07b591758e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d60a4c49af4d5cb88aa7cbf998d0408bd415055"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cd40eee4923d104ebec9ac7513b971bc441e431d"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89616.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89616"
    },
    {
      "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:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "fs/ntfs3: fix info-leak on partial LZNT decompress in ni_read_frame()"
}