{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.176-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.85-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.19.14-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  ocfs2: fix possible deadlock between unlink and dio_end_io_write  ocfs2_unlink takes orphan dir inode_lock first and then ip_alloc_sem, while in ocfs2_dio_end_io_write, it acquires these locks in reverse order. This creates an ABBA lock ordering violation on lock classes ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE] and ocfs2_file_ip_alloc_sem_key.  Lock Chain #0 (orphan dir inode_lock -\u003e ip_alloc_sem): ocfs2_unlink   ocfs2_prepare_orphan_dir     ocfs2_lookup_lock_orphan_dir       inode_lock(orphan_dir_inode) \u003c- lock A     __ocfs2_prepare_orphan_dir       ocfs2_prepare_dir_for_insert         ocfs2_extend_dir \t  ocfs2_expand_inline_dir \t    down_write(\u0026oi-\u003eip_alloc_sem) \u003c- Lock B  Lock Chain #1 (ip_alloc_sem -\u003e orphan dir inode_lock): ocfs2_dio_end_io_write   down_write(\u0026oi-\u003eip_alloc_sem) \u003c- Lock B   ocfs2_del_inode_from_orphan()     inode_lock(orphan_dir_inode) \u003c- Lock A  Deadlock Scenario:   CPU0 (unlink)                     CPU1 (dio_end_io_write)   ------                            ------   inode_lock(orphan_dir_inode)                                     down_write(ip_alloc_sem)   down_write(ip_alloc_sem)                                     inode_lock(orphan_dir_inode)  Since ip_alloc_sem is to protect allocation changes, which is unrelated with operations in ocfs2_del_inode_from_orphan.  So move ocfs2_del_inode_from_orphan out of ip_alloc_sem to fix the deadlock.",
  "id": "DEBIAN-CVE-2026-31598",
  "modified": "2026-09-14T16:47:36.896713664Z",
  "published": "2026-04-24T15:16:37.560Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-31598"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-31598"
  ]
}