{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1d191b4ca51d73699cb127386b95ac152af2b930"
            },
            {
              "fixed": "9d5a97bc71ed5783687705c708454c4453aa91d1"
            },
            {
              "fixed": "d3790f26d38606f020212486359b84632c19d08b"
            },
            {
              "fixed": "4a2d046e4b13202a6301a993961f5b30ae4d7119"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.15.0"
            },
            {
              "fixed": "6.18.16"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43166.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix interlaced plain identification for encoded extents\n\nOnly plain data whose start position and on-disk physical length are\nboth aligned to the block size should be classified as interlaced\nplain extents. Otherwise, it must be treated as shifted plain extents.\n\nThis issue was found by syzbot using a crafted compressed image\ncontaining plain extents with unaligned physical lengths, which can\ncause OOB read in z_erofs_transform_plain().",
  "id": "CVE-2026-43166",
  "modified": "2026-07-15T01:48:54.428604311Z",
  "published": "2026-05-06T11:27:43.242Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4a2d046e4b13202a6301a993961f5b30ae4d7119"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9d5a97bc71ed5783687705c708454c4453aa91d1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3790f26d38606f020212486359b84632c19d08b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43166.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43166"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "erofs: fix interlaced plain identification for encoded extents"
}