{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "237fead619984cc48818fe12ee0ceada3f55b012"
            },
            {
              "fixed": "329de8b9e988b152b938f09224670d97bada0b96"
            },
            {
              "fixed": "e5d254e654f2311a3c4b9c791d7f216554bcd17a"
            },
            {
              "fixed": "747fd45be396a6aea3420ab657a0ab4e60185b05"
            },
            {
              "fixed": "2602b79c5b3e2f6fce12e38a670f8e3fda4e46a2"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.19"
            },
            {
              "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-2026-89608.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\necryptfs: pass packet set buffer size to parser\n\necryptfs_parse_packet_set() receives a pointer into the file header, but\nit calculates the remaining packet buffer size from PAGE_SIZE - 8.  For\nversion 1 headers the packet set starts later in the header, so this can\noverstate the available buffer.\n\nPass the actual packet set buffer length from the caller and calculate\nper-packet limits from the remaining bytes in that buffer.  Recompute the\nremaining length after consuming a tag 3 packet before parsing the\nfollowing tag 11 packet.",
  "id": "CVE-2026-89608",
  "modified": "2026-09-13T03:30:23.318827304Z",
  "published": "2026-09-11T19:45:10.318Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2602b79c5b3e2f6fce12e38a670f8e3fda4e46a2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/329de8b9e988b152b938f09224670d97bada0b96"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/747fd45be396a6aea3420ab657a0ab4e60185b05"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e5d254e654f2311a3c4b9c791d7f216554bcd17a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89608.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89608"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "ecryptfs: pass packet set buffer size to parser"
}