{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-71065", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:30:19.646Z", "datePublished": "2026-01-13T15:31:21.235Z", "dateUpdated": "2026-05-11T21:54:03.528Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:54:03.528Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid potential deadlock\n\nAs Jiaming Zhang and syzbot reported, there is potential deadlock in\nf2fs as below:\n\nChain exists of:\n &sbi->cp_rwsem --> fs_reclaim --> sb_internal#2\n\n Possible unsafe locking scenario:\n\n CPU0 CPU1\n ---- ----\n rlock(sb_internal#2);\n lock(fs_reclaim);\n lock(sb_internal#2);\n rlock(&sbi->cp_rwsem);\n\n *** DEADLOCK ***\n\n3 locks held by kswapd0/73:\n #0: ffffffff8e247a40 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat mm/vmscan.c:7015 [inline]\n #0: ffffffff8e247a40 (fs_reclaim){+.+.}-{0:0}, at: kswapd+0x951/0x2800 mm/vmscan.c:7389\n #1: ffff8880118400e0 (&type->s_umount_key#50){.+.+}-{4:4}, at: super_trylock_shared fs/super.c:562 [inline]\n #1: ffff8880118400e0 (&type->s_umount_key#50){.+.+}-{4:4}, at: super_cache_scan+0x91/0x4b0 fs/super.c:197\n #2: ffff888011840610 (sb_internal#2){.+.+}-{0:0}, at: f2fs_evict_inode+0x8d9/0x1b60 fs/f2fs/inode.c:890\n\nstack backtrace:\nCPU: 0 UID: 0 PID: 73 Comm: kswapd0 Not tainted syzkaller #0 PREEMPT(full)\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\nCall Trace:\n \n dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120\n print_circular_bug+0x2ee/0x310 kernel/locking/lockdep.c:2043\n check_noncircular+0x134/0x160 kernel/locking/lockdep.c:2175\n check_prev_add kernel/locking/lockdep.c:3165 [inline]\n check_prevs_add kernel/locking/lockdep.c:3284 [inline]\n validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908\n __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237\n lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868\n down_read+0x46/0x2e0 kernel/locking/rwsem.c:1537\n f2fs_down_read fs/f2fs/f2fs.h:2278 [inline]\n f2fs_lock_op fs/f2fs/f2fs.h:2357 [inline]\n f2fs_do_truncate_blocks+0x21c/0x10c0 fs/f2fs/file.c:791\n f2fs_truncate_blocks+0x10a/0x300 fs/f2fs/file.c:867\n f2fs_truncate+0x489/0x7c0 fs/f2fs/file.c:925\n f2fs_evict_inode+0x9f2/0x1b60 fs/f2fs/inode.c:897\n evict+0x504/0x9c0 fs/inode.c:810\n f2fs_evict_inode+0x1dc/0x1b60 fs/f2fs/inode.c:853\n evict+0x504/0x9c0 fs/inode.c:810\n dispose_list fs/inode.c:852 [inline]\n prune_icache_sb+0x21b/0x2c0 fs/inode.c:1000\n super_cache_scan+0x39b/0x4b0 fs/super.c:224\n do_shrink_slab+0x6ef/0x1110 mm/shrinker.c:437\n shrink_slab_memcg mm/shrinker.c:550 [inline]\n shrink_slab+0x7ef/0x10d0 mm/shrinker.c:628\n shrink_one+0x28a/0x7c0 mm/vmscan.c:4955\n shrink_many mm/vmscan.c:5016 [inline]\n lru_gen_shrink_node mm/vmscan.c:5094 [inline]\n shrink_node+0x315d/0x3780 mm/vmscan.c:6081\n kswapd_shrink_node mm/vmscan.c:6941 [inline]\n balance_pgdat mm/vmscan.c:7124 [inline]\n kswapd+0x147c/0x2800 mm/vmscan.c:7389\n kthread+0x70e/0x8a0 kernel/kthread.c:463\n ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245\n \n\nThe root cause is deadlock among four locks as below:\n\nkswapd\n- fs_reclaim\t\t\t\t--- Lock A\n - shrink_one\n - evict\n - f2fs_evict_inode\n - sb_start_intwrite\t\t\t--- Lock B\n\n- iput\n - evict\n - f2fs_evict_inode\n - sb_start_intwrite\t\t\t--- Lock B\n - f2fs_truncate\n - f2fs_truncate_blocks\n - f2fs_do_truncate_blocks\n - f2fs_lock_op\t\t\t--- Lock C\n\nioctl\n- f2fs_ioc_commit_atomic_write\n - f2fs_lock_op\t\t\t\t--- Lock C\n - __f2fs_commit_atomic_write\n - __replace_atomic_write_block\n - f2fs_get_dnode_of_data\n - __get_node_folio\n - f2fs_check_nid_range\n - f2fs_handle_error\n - f2fs_record_errors\n - f2fs_down_write\t\t--- Lock D\n\nopen\n- do_open\n - do_truncate\n - security_inode_need_killpriv\n - f2fs_getxattr\n - lookup_all_xattrs\n - f2fs_handle_error\n - f2fs_record_errors\n - f2fs_down_write\t\t--- Lock D\n - f2fs_commit_super\n - read_mapping_folio\n - filemap_alloc_folio_noprof\n - prepare_alloc_pages\n - fs_reclaim_acquire\t--- Lock A\n\nIn order to a\n---truncated---" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/f2fs/compress.c", "fs/f2fs/f2fs.h", "fs/f2fs/super.c" ], "versions": [ { "version": "95fa90c9e5a7f14c2497d5b032544478c9377c3a", "lessThan": "8bd6dff8b801abaa362272894bda795bf0cf1307", "status": "affected", "versionType": "git" }, { "version": "95fa90c9e5a7f14c2497d5b032544478c9377c3a", "lessThan": "6c3bab5c6261aa22c561ef56b7365959a90e7d91", "status": "affected", "versionType": "git" }, { "version": "95fa90c9e5a7f14c2497d5b032544478c9377c3a", "lessThan": "86a85a7b622e6e8dba69810257733ce5eab5ed55", "status": "affected", "versionType": "git" }, { "version": "95fa90c9e5a7f14c2497d5b032544478c9377c3a", "lessThan": "ca8b201f28547e28343a6f00a6e91fa8c09572fe", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/f2fs/compress.c", "fs/f2fs/f2fs.h", "fs/f2fs/super.c" ], "versions": [ { "version": "6.1", "status": "affected" }, { "version": "0", "lessThan": "6.1", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.120", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.64", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.3", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.19", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.6.120" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.12.64" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.18.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.19" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/8bd6dff8b801abaa362272894bda795bf0cf1307" }, { "url": "https://git.kernel.org/stable/c/6c3bab5c6261aa22c561ef56b7365959a90e7d91" }, { "url": "https://git.kernel.org/stable/c/86a85a7b622e6e8dba69810257733ce5eab5ed55" }, { "url": "https://git.kernel.org/stable/c/ca8b201f28547e28343a6f00a6e91fa8c09572fe" } ], "title": "f2fs: fix to avoid potential deadlock", "x_generator": { "engine": "bippy-1.2.0" } } } }