{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.86-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.0.4-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  jbd2: fix deadlock in jbd2_journal_cancel_revoke()  Commit f76d4c28a46a (\"fs/jbd2: use sleeping version of __find_get_block()\") changed jbd2_journal_cancel_revoke() to use __find_get_block_nonatomic() which holds the folio lock instead of i_private_lock. This breaks the lock ordering (folio -\u003e buffer) and causes an ABBA deadlock when the filesystem blocksize \u003c pagesize:       T1                                T2 ext4_mkdir()  ext4_init_new_dir()   ext4_append()    ext4_getblk()     lock_buffer()    \u003c- A                                    sync_blockdev()                                     blkdev_writepages()                                      writeback_iter()                                       writeback_get_folio()                                        folio_lock()   \u003c- B      ext4_journal_get_create_access()       jbd2_journal_cancel_revoke()        __find_get_block_nonatomic()         folio_lock()  \u003c- B                                      block_write_full_folio()                                       lock_buffer()   \u003c- A  This can occasionally cause generic/013 to hang.  Fix by only calling __find_get_block_nonatomic() when the passed buffer_head doesn't belong to the bdev, which is the only case that we need to look up its bdev alias. Otherwise, the lookup is redundant since the found buffer_head is equal to the one we passed in.",
  "id": "DEBIAN-CVE-2026-46061",
  "modified": "2026-09-14T16:47:32.212598136Z",
  "published": "2026-05-27T14:17:25.883Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-46061"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-46061"
  ]
}