{"id":"CVE-2023-54068","summary":"f2fs: compress: fix to call f2fs_wait_on_page_writeback() in f2fs_write_raw_pages()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: compress: fix to call f2fs_wait_on_page_writeback() in f2fs_write_raw_pages()\n\nBUG_ON() will be triggered when writing files concurrently,\nbecause the same page is writtenback multiple times.\n\n1597 void folio_end_writeback(struct folio *folio)\n1598 {\n\t\t......\n1618     if (!__folio_end_writeback(folio))\n1619         BUG();\n\t\t......\n1625 }\n\nkernel BUG at mm/filemap.c:1619!\nCall Trace:\n \u003cTASK\u003e\n f2fs_write_end_io+0x1a0/0x370\n blk_update_request+0x6c/0x410\n blk_mq_end_request+0x15/0x130\n blk_complete_reqs+0x3c/0x50\n __do_softirq+0xb8/0x29b\n ? sort_range+0x20/0x20\n run_ksoftirqd+0x19/0x20\n smpboot_thread_fn+0x10b/0x1d0\n kthread+0xde/0x110\n ? kthread_complete_and_exit+0x20/0x20\n ret_from_fork+0x22/0x30\n \u003c/TASK\u003e\n\nBelow is the concurrency scenario:\n\n[Process A]\t\t[Process B]\t\t[Process C]\nf2fs_write_raw_pages()\n  - redirty_page_for_writepage()\n  - unlock page()\n\t\t\tf2fs_do_write_data_page()\n\t\t\t  - lock_page()\n\t\t\t  - clear_page_dirty_for_io()\n\t\t\t  - set_page_writeback() [1st writeback]\n\t\t\t    .....\n\t\t\t    - unlock page()\n\n\t\t\t\t\t\tgeneric_perform_write()\n\t\t\t\t\t\t  - f2fs_write_begin()\n\t\t\t\t\t\t    - wait_for_stable_page()\n\n\t\t\t\t\t\t  - f2fs_write_end()\n\t\t\t\t\t\t    - set_page_dirty()\n\n  - lock_page()\n    - f2fs_do_write_data_page()\n      - set_page_writeback() [2st writeback]\n\nThis problem was introduced by the previous commit 7377e853967b (\"f2fs:\ncompress: fix potential deadlock of compress file\"). All pagelocks were\nreleased in f2fs_write_raw_pages(), but whether the page was\nin the writeback state was ignored in the subsequent writing process.\nLet's fix it by waiting for the page to writeback before writing.","modified":"2026-08-12T03:51:10.441801207Z","published":"2025-12-24T12:23:12.818Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54068.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/169134da419cb8ffbe3b0743bc24573e16952ea9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6604df2a9d07ba8f8fb1ac14046c2c83776faa4f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9940877c4fe752923a53f0f7372f2f152b6eccf0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a8226a45b2a9ce83ba7a167a387a00fecc319e71"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ad31eed06c3b4d63b2d38322a271d4009aee4bb3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/babedcbac164cec970872b8097401ca913a80e61"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54068.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-54068"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4c8ff7095bef64fc47e996a938f7d57f9e077da3"},{"fixed":"a8226a45b2a9ce83ba7a167a387a00fecc319e71"},{"fixed":"169134da419cb8ffbe3b0743bc24573e16952ea9"},{"fixed":"6604df2a9d07ba8f8fb1ac14046c2c83776faa4f"},{"fixed":"9940877c4fe752923a53f0f7372f2f152b6eccf0"},{"fixed":"ad31eed06c3b4d63b2d38322a271d4009aee4bb3"},{"fixed":"babedcbac164cec970872b8097401ca913a80e61"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54068.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.6.0"},{"fixed":"5.10.180"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.111"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.28"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.2.15"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.3.0"},{"fixed":"6.3.2"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54068.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}