{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.96-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.1.3-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux-6.12"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.100-1~deb12u1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  f2fs: atomic: fix UAF issue on f2fs_inode_info.atomic_inode  - ioctl(F2FS_IOC_GARBAGE_COLLECT_RANGE)\t\t- shrink  - f2fs_gc   - gc_data_segment    - ra_data_block(cow_inode)     - mapping = F2FS_I(inode)-\u003eatomic_inode-\u003ei_mapping     : f2fs_is_cow_file(cow_inode) is true \t\t\t\t\t\t - f2fs_evict_inode(atomic_inode) \t\t\t\t\t\t  - clear_inode_flag(fi-\u003ecow_inode, FI_COW_FILE) \t\t\t\t\t\t  - F2FS_I(fi-\u003ecow_inode)-\u003eatomic_inode = NULL \t\t\t\t\t\t  ... \t\t\t\t\t\t  - truncate_inode_pages_final(atomic_inode)     - f2fs_grab_cache_folio(mapping)     : create folio in atomic_inode-\u003emapping \t\t\t\t\t\t  - clear_inode(atomic_inode) \t\t\t\t\t\t   - BUG_ON(atomic_inode-\u003ei_data.nrpages)  We need to add a reference on fi-\u003eatomic_inode before using its mapping field during garbage collection, otherwise, it will cause UAF issue.",
  "id": "DEBIAN-CVE-2026-63816",
  "modified": "2026-09-14T16:47:47.704745762Z",
  "published": "2026-07-19T12:16:54.643Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-63816"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-63816"
  ]
}