168 lines
11 KiB
JSON
168 lines
11 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-71065",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-01-13T15:30:19.646Z",
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"datePublished": "2026-01-13T15:31:21.235Z",
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"dateUpdated": "2026-05-11T21:54:03.528Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-11T21:54:03.528Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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 <TASK>\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 </TASK>\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---"
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/f2fs/compress.c",
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"fs/f2fs/f2fs.h",
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"fs/f2fs/super.c"
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],
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"versions": [
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{
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"version": "95fa90c9e5a7f14c2497d5b032544478c9377c3a",
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"lessThan": "8bd6dff8b801abaa362272894bda795bf0cf1307",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "95fa90c9e5a7f14c2497d5b032544478c9377c3a",
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"lessThan": "6c3bab5c6261aa22c561ef56b7365959a90e7d91",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "95fa90c9e5a7f14c2497d5b032544478c9377c3a",
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"lessThan": "86a85a7b622e6e8dba69810257733ce5eab5ed55",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "95fa90c9e5a7f14c2497d5b032544478c9377c3a",
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"lessThan": "ca8b201f28547e28343a6f00a6e91fa8c09572fe",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/f2fs/compress.c",
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"fs/f2fs/f2fs.h",
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"fs/f2fs/super.c"
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],
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"versions": [
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{
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"version": "6.1",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.1",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.120",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.64",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.3",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.19",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.1",
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"versionEndExcluding": "6.6.120"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.1",
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"versionEndExcluding": "6.12.64"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.1",
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"versionEndExcluding": "6.18.3"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.1",
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"versionEndExcluding": "6.19"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/8bd6dff8b801abaa362272894bda795bf0cf1307"
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},
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{
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"url": "https://git.kernel.org/stable/c/6c3bab5c6261aa22c561ef56b7365959a90e7d91"
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},
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{
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"url": "https://git.kernel.org/stable/c/86a85a7b622e6e8dba69810257733ce5eab5ed55"
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},
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{
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"url": "https://git.kernel.org/stable/c/ca8b201f28547e28343a6f00a6e91fa8c09572fe"
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}
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],
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"title": "f2fs: fix to avoid potential deadlock",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |