f2fs: fix to avoid UAF in f2fs_sync_inode_meta()

{
  "id": "5c6ef199316f5d464c6a42741bbec498ec9eb60a5df726257cce9f8ad6993d62",
  "url": "https://osv.dev/vulnerability/CVE-2025-38578",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "f2fs: fix to avoid UAF in f2fs_sync_inode_meta()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid UAF in f2fs_sync_inode_meta() syzbot reported an UAF issue as below: [1] [2] [1] https://syzkaller.appspot.com/text?tag=CrashReport&x=16594c60580000 ================================================================== BUG: KASAN: use-after-free in __list_del_entry_valid+0xa6/0x130 lib/list_debug.c:62 Read of size 8 at addr ffff888100567dc8 by task kworker/u4:0/8 CPU: 1 PID: 8 Comm: kworker/u4:0 Tainted: G W 6.1.129-syzkaller-00017-g642656a36791 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: writeback wb_workfn (flush-7:0) Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:316 [inline] print_report+0x158/0x4e0 mm/kasan/report.c:427 kasan_report+0x13c/0x170 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+0x100/0x2e0 fs/f2fs/super.c:1553 f2fs_update_inode+0x72/0x1c40 fs/f2fs/inode.c:588 f2fs_update_inode_page+0x135/0x170 fs/f2fs/inode.c:706 f2fs_write_inode+0x416/0x790 fs/f2fs/inode.c:734 write_inode fs/fs-writeback.c:1460 [inline] __writeback_single_inode+0x4cf/0xb80 fs/fs-writeback.c:1677 writeback_sb_inodes+0xb32/0x1910 fs/fs-writebac",
    "evidence": "osv:CVE-2025-38578",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
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            "evidence": "/affected/1/ranges"
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          {
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            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-38578",
      "aliases": [
        "CVE-2025-38578"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
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          "database_specific": {
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        {
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          "package": {
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            "ecosystem": "Linux"
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      ],
      "modified": "2026-10-28T02:30:33.260129464Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1edf68272b8cba2b2817ef1488ecb9f0f84cb6a0",
        "https://git.kernel.org/stable/c/37e78cad7e9e025e63bb35bc200f44637b009bb1",
        "https://git.kernel.org/stable/c/3d37cadaac1a8e108e576297aab9125b24ea2dfe",
        "https://git.kernel.org/stable/c/4dcd830c420f2190ae32f03626039fde7b57b2ad",
        "https://git.kernel.org/stable/c/6cac47af39b2b8edbb41d47c3bd9c332f83e9932",
        "https://git.kernel.org/stable/c/7c30d79930132466f5be7d0b57add14d1a016bda",
        "https://git.kernel.org/stable/c/917ae5e280bc263f56c83fba0d0f0be2c4828083",
        "https://git.kernel.org/stable/c/a4b0cc9e0bba7525a29f37714e88df12a47997a2",
        "https://git.kernel.org/stable/c/dea243f58a8391e76f42ad5eb59ff210519ee772",
        "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html",
        "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38578.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-38578",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38578.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-38578",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 500249,
  "published_at": "2025-08-19T17:03:01.483+00:00"
}