CVE-2025-38650— Linux kernel 安全漏洞
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
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hfsplus在释放扩展时未正确处理互斥锁检查，可能导致死锁。
影响版本矩阵 20
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 31651c607151f1034cfb57e5a78678bea54c362b< 0807e4ac59a546f2346961c5e26a98901594b205 |
affected |
31651c607151f1034cfb57e5a78678bea54c362b< fdd6aca652122d6e97787e88d7dd53ddc8b74e7e |
affected | ||
31651c607151f1034cfb57e5a78678bea54c362b< 14922f0cc92e010b160121679c0a6ca072f4e975 |
affected | ||
31651c607151f1034cfb57e5a78678bea54c362b< a19ce9230b22a0866313932e7964cf05557a6008 |
affected | ||
31651c607151f1034cfb57e5a78678bea54c362b< 084933961ecda7561dedfb78c4676ccb90c91ada |
affected | ||
31651c607151f1034cfb57e5a78678bea54c362b< 5055b7db94110f228961dea6b74eed0a93a50b01 |
affected | ||
31651c607151f1034cfb57e5a78678bea54c362b< 9764b8bb9f5f94df105cd2ac43829dd0d2c82b9f |
affected | ||
31651c607151f1034cfb57e5a78678bea54c362b< 314310166ba1fdff7660dfd9d18ea42d7058f7ae |
affected | ||
| … +12 条更多 | |||
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一、 漏洞 CVE-2025-38650 基础信息
漏洞信息
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Vulnerability Title
hfsplus: remove mutex_lock check in hfsplus_free_extents
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
hfsplus: remove mutex_lock check in hfsplus_free_extents
Syzbot reported an issue in hfsplus filesystem:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4400 at fs/hfsplus/extents.c:346
hfsplus_free_extents+0x700/0xad0
Call Trace:
<TASK>
hfsplus_file_truncate+0x768/0xbb0 fs/hfsplus/extents.c:606
hfsplus_write_begin+0xc2/0xd0 fs/hfsplus/inode.c:56
cont_expand_zero fs/buffer.c:2383 [inline]
cont_write_begin+0x2cf/0x860 fs/buffer.c:2446
hfsplus_write_begin+0x86/0xd0 fs/hfsplus/inode.c:52
generic_cont_expand_simple+0x151/0x250 fs/buffer.c:2347
hfsplus_setattr+0x168/0x280 fs/hfsplus/inode.c:263
notify_change+0xe38/0x10f0 fs/attr.c:420
do_truncate+0x1fb/0x2e0 fs/open.c:65
do_sys_ftruncate+0x2eb/0x380 fs/open.c:193
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
To avoid deadlock, Commit 31651c607151 ("hfsplus: avoid deadlock
on file truncation") unlock extree before hfsplus_free_extents(),
and add check wheather extree is locked in hfsplus_free_extents().
However, when operations such as hfsplus_file_release,
hfsplus_setattr, hfsplus_unlink, and hfsplus_get_block are executed
concurrently in different files, it is very likely to trigger the
WARN_ON, which will lead syzbot and xfstest to consider it as an
abnormality.
The comment above this warning also describes one of the easy
triggering situations, which can easily trigger and cause
xfstest&syzbot to report errors.
[task A] [task B]
->hfsplus_file_release
->hfsplus_file_truncate
->hfs_find_init
->mutex_lock
->mutex_unlock
->hfsplus_write_begin
->hfsplus_get_block
->hfsplus_file_extend
->hfsplus_ext_read_extent
->hfs_find_init
->mutex_lock
->hfsplus_free_extents
WARN_ON(mutex_is_locked) !!!
Several threads could try to lock the shared extents tree.
And warning can be triggered in one thread when another thread
has locked the tree. This is the wrong behavior of the code and
we need to remove the warning.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
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hfsplus在释放扩展时未正确处理互斥锁检查，可能导致死锁。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2025-38650 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
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同批安全公告 · Linux · 2025-08-22 · 共 60 条
| CVE-2025-38660 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-38658 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38643 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-58239 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38675 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38659 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38656 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38653 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38627 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38667 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38619 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38640 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38670 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38618 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38617 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38616 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38657 | 7.3 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38652 | 7.3 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38661 | 7.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-38662 | 7.1 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 60 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2025-38650
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