{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2024-56744", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-56744", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-12-29T11:30:11.816Z", "updatedAt": "2026-05-23T15:55:59.675Z", "importedAt": "2026-10-24T01:57:20.494Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "f2fs: fix to avoid potential deadlock in f2fs_record_stop_reason()", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid potential deadlock in f2fs_record_stop_reason()\n\nsyzbot reports deadlock issue of f2fs as below:\n\n======================================================\nWARNING: possible circular locking dependency detected\n6.12.0-rc3-syzkaller-00087-gc964ced77262 #0 Not tainted\n------------------------------------------------------\nkswapd0/79 is trying to acquire lock:\nffff888011824088 (&sbi->sb_lock){++++}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2199 [inline]\nffff888011824088 (&sbi->sb_lock){++++}-{3:3}, at: f2fs_record_stop_reason+0x52/0x1d0 fs/f2fs/super.c:4068\n\nbut task is already holding lock:\nffff88804bd92610 (sb_internal#2){.+.+}-{0:0}, at: f2fs_evict_inode+0x662/0x15c0 fs/f2fs/inode.c:842\n\nwhich lock already depends on the new lock.\n\nthe existing dependency chain (in reverse order) is:\n\n-> #2 (sb_internal#2){.+.+}-{0:0}:\n lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825\n percpu_down_read include/linux/percpu-rwsem.h:51 [inline]\n __sb_start_write include/linux/fs.h:1716 [inline]\n sb_start_intwrite+0x4d/0x1c0 include/linux/fs.h:1899\n f2fs_evict_inode+0x662/0x15c0 fs/f2fs/inode.c:842\n evict+0x4e8/0x9b0 fs/inode.c:725\n f2fs_evict_inode+0x1a4/0x15c0 fs/f2fs/inode.c:807\n evict+0x4e8/0x9b0 fs/inode.c:725\n dispose_list fs/inode.c:774 [inline]\n prune_icache_sb+0x239/0x2f0 fs/inode.c:963\n super_cache_scan+0x38c/0x4b0 fs/super.c:223\n do_shrink_slab+0x701/0x1160 mm/shrinker.c:435\n shrink_slab+0x1093/0x14d0 mm/shrinker.c:662\n shrink_one+0x43b/0x850 mm/vmscan.c:4818\n shrink_many mm/vmscan.c:4879 [inline]\n lru_gen_shrink_node mm/vmscan.c:4957 [inline]\n shrink_node+0x3799/0x3de0 mm/vmscan.c:5937\n kswapd_shrink_node mm/vmscan.c:6765 [inline]\n balance_pgdat mm/vmscan.c:6957 [inline]\n kswapd+0x1ca3/0x3700 mm/vmscan.c:7226\n kthread+0x2f0/0x390 kernel/kthread.c:389\n ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\n\n-> #1 (fs_reclaim){+.+.}-{0:0}:\n lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825\n __fs_reclaim_acquire mm/page_alloc.c:3834 [inline]\n fs_reclaim_acquire+0x88/0x130 mm/page_alloc.c:3848\n might_alloc include/linux/sched/mm.h:318 [inline]\n prepare_alloc_pages+0x147/0x5b0 mm/page_alloc.c:4493\n __alloc_pages_noprof+0x16f/0x710 mm/page_alloc.c:4722\n alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265\n alloc_pages_noprof mm/mempolicy.c:2345 [inline]\n folio_alloc_noprof+0x128/0x180 mm/mempolicy.c:2352\n filemap_alloc_folio_noprof+0xdf/0x500 mm/filemap.c:1010\n do_read_cache_folio+0x2eb/0x850 mm/filemap.c:3787\n read_mapping_folio include/linux/pagemap.h:1011 [inline]\n f2fs_commit_super+0x3c0/0x7d0 fs/f2fs/super.c:4032\n f2fs_record_stop_reason+0x13b/0x1d0 fs/f2fs/super.c:4079\n f2fs_handle_critical_error+0x2ac/0x5c0 fs/f2fs/super.c:4174\n f2fs_write_inode+0x35f/0x4d0 fs/f2fs/inode.c:785\n write_inode fs/fs-writeback.c:1503 [inline]\n __writeback_single_inode+0x711/0x10d0 fs/fs-writeback.c:1723\n writeback_single_inode+0x1f3/0x660 fs/fs-writeback.c:1779\n sync_inode_metadata+0xc4/0x120 fs/fs-writeback.c:2849\n f2fs_release_file+0xa8/0x100 fs/f2fs/file.c:1941\n __fput+0x23f/0x880 fs/file_table.c:431\n task_work_run+0x24f/0x310 kernel/task_work.c:228\n resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]\n exit_to_user_mode_loop kernel/entry/common.c:114 [inline]\n exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]\n __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]\n syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218\n do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\n---truncated---", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5", "status": "affected", "versionType": "git", "lessThan": "ecf4e6782b01fd578b565b3dd2be7bb0ac91082e" }, { "version": "b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5", "status": "affected", "versionType": "git", "lessThan": "1539a088b108996bcdaddb7775070b5163b14233" }, { "version": "b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5", "status": "affected", "versionType": "git", "lessThan": "801092a2c9c251ef6a8678fcb8fcc1220474a697" }, { "version": "b62e71be2110d8b52bf5faf3c3ed7ca1a0c113a5", "status": "affected", "versionType": "git", "lessThan": "f10a890308a7cd8794e21f646f09827c6cb4bf5d" }, { "version": "ed1d478bf838820201f3fb67a1748fdf15954ea4", "status": "affected", "versionType": "git" }, { "version": "6.4.4", "status": "affected", "versionType": "semver", "lessThan": "6.5" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.5", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.5" }, { "version": "6.6.64", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.11.11", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.11.*" }, { "version": "6.12.2", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.13", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }