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CVE-2025-38577— f2fs: fix to avoid panic in f2fs_evict_inode

Quick assessment

Affected

Linux Linux

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于f2fs_evict_inode函数中存在释放后重用，可能导致崩溃。

CVSS 7.8 · High EPSS 0.19% · P8 Updated Aug 05, 2026

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 20

Vendor	Product	Version Range	Status
Linux	Linux	`0f18b462b2e5aff64b8638e8a47284b907351ef3< 15df59809c54fbd687cdf27efbd2103a937459be`	affected
		`0f18b462b2e5aff64b8638e8a47284b907351ef3< 9535e440fe5bc6c5ac7cfb407e53bf788b8bf8d4`	affected
		`0f18b462b2e5aff64b8638e8a47284b907351ef3< 5cd99d5aa3d39086bdb53eb5c52df16e98b101a0`	affected
		`0f18b462b2e5aff64b8638e8a47284b907351ef3< 4732ca17c17f5062426cfa982f43593e6b81963b`	affected
		`0f18b462b2e5aff64b8638e8a47284b907351ef3< 880ef748e78a1eb7df2d8e11a9ef21e98bcaabe5`	affected
		`0f18b462b2e5aff64b8638e8a47284b907351ef3< 97df495d754116c8c28ac6a4112f831727bde887`	affected
		`0f18b462b2e5aff64b8638e8a47284b907351ef3< 9bbfe83924946552c4c513099c0e8c83af76311a`	affected
		`0f18b462b2e5aff64b8638e8a47284b907351ef3< 42f9ea16aea8b49febaa87950a006a1792209f38`	affected
… +12 more rows

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I. Basic Information for CVE-2025-38577

Vulnerability Information

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Vulnerability Title

f2fs: fix to avoid panic in f2fs_evict_inode

Source: CVE Program / CVE List V5

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid panic in f2fs_evict_inode As syzbot [1] reported as below: R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffe17473450 R13: 00007f28b1c10854 R14: 000000000000dae5 R15: 00007ffe17474520 </TASK> ---[ end trace 0000000000000000 ]--- ================================================================== BUG: KASAN: use-after-free in __list_del_entry_valid+0xa6/0x130 lib/list_debug.c:62 Read of size 8 at addr ffff88812d962278 by task syz-executor/564 CPU: 1 PID: 564 Comm: syz-executor Tainted: G W 6.1.129-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: <TASK> __dump_stack+0x21/0x24 lib/dump_stack.c:88 dump_stack_lvl+0xee/0x158 lib/dump_stack.c:106 print_address_description+0x71/0x210 mm/kasan/report.c:316 print_report+0x4a/0x60 mm/kasan/report.c:427 kasan_report+0x122/0x150 mm/kasan/report.c:531 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:351 __list_del_entry_valid+0xa6/0x130 lib/list_debug.c:62 __list_del_entry include/linux/list.h:134 [inline] list_del_init include/linux/list.h:206 [inline] f2fs_inode_synced+0xf7/0x2e0 fs/f2fs/super.c:1531 f2fs_update_inode+0x74/0x1c40 fs/f2fs/inode.c:585 f2fs_update_inode_page+0x137/0x170 fs/f2fs/inode.c:703 f2fs_write_inode+0x4ec/0x770 fs/f2fs/inode.c:731 write_inode fs/fs-writeback.c:1460 [inline] __writeback_single_inode+0x4a0/0xab0 fs/fs-writeback.c:1677 writeback_single_inode+0x221/0x8b0 fs/fs-writeback.c:1733 sync_inode_metadata+0xb6/0x110 fs/fs-writeback.c:2789 f2fs_sync_inode_meta+0x16d/0x2a0 fs/f2fs/checkpoint.c:1159 block_operations fs/f2fs/checkpoint.c:1269 [inline] f2fs_write_checkpoint+0xca3/0x2100 fs/f2fs/checkpoint.c:1658 kill_f2fs_super+0x231/0x390 fs/f2fs/super.c:4668 deactivate_locked_super+0x98/0x100 fs/super.c:332 deactivate_super+0xaf/0xe0 fs/super.c:363 cleanup_mnt+0x45f/0x4e0 fs/namespace.c:1186 __cleanup_mnt+0x19/0x20 fs/namespace.c:1193 task_work_run+0x1c6/0x230 kernel/task_work.c:203 exit_task_work include/linux/task_work.h:39 [inline] do_exit+0x9fb/0x2410 kernel/exit.c:871 do_group_exit+0x210/0x2d0 kernel/exit.c:1021 __do_sys_exit_group kernel/exit.c:1032 [inline] __se_sys_exit_group kernel/exit.c:1030 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1030 x64_sys_call+0x7b4/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f28b1b8e169 Code: Unable to access opcode bytes at 0x7f28b1b8e13f. RSP: 002b:00007ffe174710a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f28b1c10879 RCX: 00007f28b1b8e169 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000002 R08: 00007ffe1746ee47 R09: 00007ffe17472360 R10: 0000000000000009 R11: 0000000000000246 R12: 00007ffe17472360 R13: 00007f28b1c10854 R14: 000000000000dae5 R15: 00007ffe17474520 </TASK> Allocated by task 569: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_alloc_info+0x25/0x30 mm/kasan/generic.c:505 __kasan_slab_alloc+0x72/0x80 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x4f/0x2c0 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc_lru+0x104/0x220 mm/slub.c:3429 alloc_inode_sb include/linux/fs.h:3245 [inline] f2fs_alloc_inode+0x2d/0x340 fs/f2fs/super.c:1419 alloc_inode fs/inode.c:261 [inline] iget_locked+0x186/0x880 fs/inode.c:1373 f2fs_iget+0x55/0x4c60 fs/f2fs/inode.c:483 f2fs_lookup+0x366/0xab0 fs/f2fs/namei.c:487 __lookup_slow+0x2a3/0x3d0 fs/namei.c:1690 lookup_slow+0x57/0x70 fs/namei.c:1707 walk_component+0x2e6/0x410 fs/namei ---truncated---

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

N/A

Source: CVE Program / CVE List V5

Vulnerability Title

Linux kernel 安全漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Linux	Linux	0f18b462b2e5aff64b8638e8a47284b907351ef3 ~ 15df59809c54fbd687cdf27efbd2103a937459be	-
Linux	Linux	4.8	-

II. Public POCs for CVE-2025-38577

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

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III. Intelligence Information for CVE-2025-38577

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https://www.cve.org/CVERecord?id=CVE-2025-38577

Same Patch Batch · Linux · 2025-08-19 · 59 CVEs total

CVE-2025-38561	9.8 CRITICAL	ksmbd: fix Preauh_HashValue race condition
CVE-2025-38566	9.8 CRITICAL	sunrpc: fix handling of server side tls alerts
CVE-2025-38560	9.3 CRITICAL	x86/sev: Evict cache lines during SNP memory validation
CVE-2025-38601	8.8 HIGH	wifi: ath11k: clear initialized flag for deinit-ed srng lists
CVE-2025-38600	8.8 HIGH	wifi: mt76: mt7925: fix off by one in mt7925_mcu_hw_scan()
CVE-2025-38599	8.8 HIGH	wifi: mt76: mt7996: Fix possible OOB access in mt7996_tx()
CVE-2025-38592	8.8 HIGH	Bluetooth: hci_devcd_dump: fix out-of-bounds via dev_coredumpv
CVE-2025-38608	8.6 HIGH	bpf, ktls: Fix data corruption when using bpf_msg_pop_data() in ktls
CVE-2025-38574	8.6 HIGH	pptp: ensure minimal skb length in pptp_xmit()
CVE-2025-38571	8.2 HIGH	sunrpc: fix client side handling of tls alerts
CVE-2025-38595	7.8 HIGH	xen: fix UAF in dmabuf_exp_from_pages()
CVE-2025-38598	7.8 HIGH	drm/amdgpu: fix use-after-free in amdgpu_userq_suspend+0x51a/0x5a0
CVE-2025-38607	7.8 HIGH	bpf: handle jset (if a & b ...) as a jump in CFG computation
CVE-2025-38614	7.8 HIGH	eventpoll: Fix semi-unbounded recursion
CVE-2025-38615	7.8 HIGH	fs/ntfs3: cancle set bad inode after removing name fails
CVE-2025-38604	7.8 HIGH	wifi: rtl818x: Kill URBs before clearing tx status queue
CVE-2025-38593	7.8 HIGH	Bluetooth: hci_sync: fix double free in 'hci_discovery_filter_clear()'
CVE-2025-38586	7.8 HIGH	bpf, arm64: Fix fp initialization for exception boundary
CVE-2025-38582	7.8 HIGH	RDMA/hns: Fix double destruction of rsv_qp
CVE-2025-38580	7.8 HIGH	ext4: fix inode use after free in ext4_end_io_rsv_work()

Showing top 20 of 59 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux

Same vendor: Linux

V. Comments for CVE-2025-38577

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Goal Reached Thanks to every supporter — we hit 100%!

CVE-2025-38577— f2fs: fix to avoid panic in f2fs_evict_inode

Quick assessment

Possible ATT&CK Techniques 1 AI

Affected Version Matrix 20

I. Basic Information for CVE-2025-38577

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2025-38577

III. Intelligence Information for CVE-2025-38577

Same Patch Batch · Linux · 2025-08-19 · 59 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2025-38577

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