CVE-2023-53447 (CNNVD-202509-2876)

UNKNOWN
中文标题:
Linux kernel 安全漏洞
英文标题:
f2fs: don't reset unchangable mount option in f2fs_remount()
CVSS分数: N/A
发布时间: 2025-09-18 16:04:22
漏洞类型: 其他
状态: PUBLISHED
数据质量分数: 0.40
数据版本: v4
漏洞描述
中文描述:

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_remount函数中重置不可更改的挂载选项，可能导致一般保护错误。

英文描述:

In the Linux kernel, the following vulnerability has been resolved: f2fs: don't reset unchangable mount option in f2fs_remount() syzbot reports a bug as below: general protection fault, probably for non-canonical address 0xdffffc0000000009: 0000 [#1] PREEMPT SMP KASAN RIP: 0010:__lock_acquire+0x69/0x2000 kernel/locking/lockdep.c:4942 Call Trace: lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5691 __raw_write_lock include/linux/rwlock_api_smp.h:209 [inline] _raw_write_lock+0x2e/0x40 kernel/locking/spinlock.c:300 __drop_extent_tree+0x3ac/0x660 fs/f2fs/extent_cache.c:1100 f2fs_drop_extent_tree+0x17/0x30 fs/f2fs/extent_cache.c:1116 f2fs_insert_range+0x2d5/0x3c0 fs/f2fs/file.c:1664 f2fs_fallocate+0x4e4/0x6d0 fs/f2fs/file.c:1838 vfs_fallocate+0x54b/0x6b0 fs/open.c:324 ksys_fallocate fs/open.c:347 [inline] __do_sys_fallocate fs/open.c:355 [inline] __se_sys_fallocate fs/open.c:353 [inline] __x64_sys_fallocate+0xbd/0x100 fs/open.c:353 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The root cause is race condition as below: - since it tries to remount rw filesystem, so that do_remount won't call sb_prepare_remount_readonly to block fallocate, there may be race condition in between remount and fallocate. - in f2fs_remount(), default_options() will reset mount option to default one, and then update it based on result of parse_options(), so there is a hole which race condition can happen. Thread A Thread B - f2fs_fill_super - parse_options - clear_opt(READ_EXTENT_CACHE) - f2fs_remount - default_options - set_opt(READ_EXTENT_CACHE) - f2fs_fallocate - f2fs_insert_range - f2fs_drop_extent_tree - __drop_extent_tree - __may_extent_tree - test_opt(READ_EXTENT_CACHE) return true - write_lock(&et->lock) access NULL pointer - parse_options - clear_opt(READ_EXTENT_CACHE)

CWE类型:
CWE-362
标签:
（暂无数据）
受影响产品
厂商 产品 版本 版本范围 平台 CPE
Linux Linux - < 115557cc226a927924f2d7d1980ccbf6e3b3bb36 - cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*
Linux Linux 3.8 - - cpe:2.3:a:linux:linux:3.8:*:*:*:*:*:*:*
linux linux_kernel * - - cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
解决方案
中文解决方案:
（暂无数据）
英文解决方案:
（暂无数据）
临时解决方案:
（暂无数据）
参考链接
无标题 OTHER
cve.org
访问
无标题 OTHER
cve.org
访问
CVSS评分详情
暂无CVSS评分信息
时间信息
发布时间:
2025-09-18 16:04:22
修改时间:
2025-09-19 15:21:41
创建时间:
2025-11-11 15:38:49
更新时间:
2026-01-15 06:00:24
利用信息
暂无可利用代码信息
数据源详情
数据源 记录ID 版本 提取时间
CVE cve_CVE-2023-53447 2025-11-11 15:22:15 2025-11-11 07:38:49
NVD nvd_CVE-2023-53447 2025-11-11 14:59:22 2025-11-11 07:46:53
CNNVD cnnvd_CNNVD-202509-2876 2025-11-11 15:12:57 2025-11-11 08:00:12
版本与语言
当前版本: v4
主要语言: EN
支持语言:
ZH EN
安全公告
暂无安全公告信息
变更历史
v4 NVD
2026-01-12 02:26:59
affected_products_count: 2 → 3
查看详细变更
  • affected_products_count: 2 -> 3
v3 CNNVD
2025-11-11 16:00:12
vulnerability_type: 未提取 → 其他; severity: SeverityLevel.MEDIUM → SeverityLevel.UNKNOWN; cvss_score: 未提取 → 0.0; cnnvd_id: 未提取 → CNNVD-202509-2876; data_sources: ['cve', 'nvd'] → ['cnnvd', 'cve', 'nvd']
查看详细变更
  • vulnerability_type: 未提取 -> 其他
  • severity: SeverityLevel.MEDIUM -> SeverityLevel.UNKNOWN
  • cvss_score: 未提取 -> 0.0
  • cnnvd_id: 未提取 -> CNNVD-202509-2876
  • data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
v2 NVD
2025-11-11 15:46:53
affected_products_count: 3 → 2; data_sources: ['cve'] → ['cve', 'nvd']
查看详细变更
  • affected_products_count: 3 -> 2
  • data_sources: ['cve'] -> ['cve', 'nvd']