{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.37-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.3.7-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.3.7-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix to avoid use-after-free for cached IPU bio  xfstest generic/019 reports a bug:  kernel BUG at mm/filemap.c:1619! RIP: 0010:folio_end_writeback+0x8a/0x90 Call Trace:  end_page_writeback+0x1c/0x60  f2fs_write_end_io+0x199/0x420  bio_endio+0x104/0x180  submit_bio_noacct+0xa5/0x510  submit_bio+0x48/0x80  f2fs_submit_write_bio+0x35/0x300  f2fs_submit_merged_ipu_write+0x2a0/0x2b0  f2fs_write_single_data_page+0x838/0x8b0  f2fs_write_cache_pages+0x379/0xa30  f2fs_write_data_pages+0x30c/0x340  do_writepages+0xd8/0x1b0  __writeback_single_inode+0x44/0x370  writeback_sb_inodes+0x233/0x4d0  __writeback_inodes_wb+0x56/0xf0  wb_writeback+0x1dd/0x2d0  wb_workfn+0x367/0x4a0  process_one_work+0x21d/0x430  worker_thread+0x4e/0x3c0  kthread+0x103/0x130  ret_from_fork+0x2c/0x50  The root cause is: after cp_error is set, f2fs_submit_merged_ipu_write() in f2fs_write_single_data_page() tries to flush IPU bio in cache, however f2fs_submit_merged_ipu_write() missed to check validity of @bio parameter, result in submitting random cached bio which belong to other IO context, then it will cause use-after-free issue, fix it by adding additional validity check.",
  "id": "DEBIAN-CVE-2023-53537",
  "modified": "2026-09-15T08:47:36.920912297Z",
  "published": "2025-10-04T16:15:48.697Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2023-53537"
    }
  ],
  "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-2023-53537"
  ]
}