{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.2.6-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  f2fs: use the mount idmap for the owner check in f2fs_xattr_advise_set()  f2fs_xattr_advise_set() calls inode_owner_or_capable() with \u0026nop_mnt_idmap before allowing the \"system.advise\" xattr to be set, instead of the idmap that the VFS passes to the -\u003eset() handler.  f2fs supports idmapped mounts, so on such a mount this checks the caller's fsuid against the unmapped on-disk owner rather than the mapped owner: the actual owner can be wrongly denied with -EPERM and an unrelated caller wrongly allowed.  Pass the handler's idmap instead.",
  "id": "DEBIAN-CVE-2026-89839",
  "modified": "2026-09-23T03:47:31.408904818Z",
  "published": "2026-09-16T11:16:50.727Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-89839"
    }
  ],
  "upstream": [
    "CVE-2026-89839"
  ]
}