CVE-2025-40244— 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_ext_cache_extent中未初始化值问题，可能导致KMSAN报告错误。
可能的 ATT&CK 技术 1 AI
T1059 · Command and Scripting Interpreter影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< c1ec90bed504640a42bb20a5f413be39cd17ad71 |
affected |
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< b8a72692aa42b7dcd179a96b90bc2763ac74576a |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< c135b8dca65526aa5b8814e9954e0ae317d9c598 |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< d7e313039a8f3a6ee072dc5ff4643234d2d735cf |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< a5bfb13b4f406aef1a450f99d22d3e48df01528c |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 99202d94909d323a30d154ab0261c0a07166daec |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 14c673a2f3ecf650b694a52a88688f1d71849899 |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 4840ceadef4290c56cc422f0fc697655f3cbf070 |
affected | ||
| … +10 条更多 | |||
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一、 漏洞 CVE-2025-40244 基础信息
漏洞信息
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Vulnerability Title
hfsplus: fix KMSAN uninit-value issue in __hfsplus_ext_cache_extent()
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
hfsplus: fix KMSAN uninit-value issue in __hfsplus_ext_cache_extent()
The syzbot reported issue in __hfsplus_ext_cache_extent():
[ 70.194323][ T9350] BUG: KMSAN: uninit-value in __hfsplus_ext_cache_extent+0x7d0/0x990
[ 70.195022][ T9350] __hfsplus_ext_cache_extent+0x7d0/0x990
[ 70.195530][ T9350] hfsplus_file_extend+0x74f/0x1cf0
[ 70.195998][ T9350] hfsplus_get_block+0xe16/0x17b0
[ 70.196458][ T9350] __block_write_begin_int+0x962/0x2ce0
[ 70.196959][ T9350] cont_write_begin+0x1000/0x1950
[ 70.197416][ T9350] hfsplus_write_begin+0x85/0x130
[ 70.197873][ T9350] generic_perform_write+0x3e8/0x1060
[ 70.198374][ T9350] __generic_file_write_iter+0x215/0x460
[ 70.198892][ T9350] generic_file_write_iter+0x109/0x5e0
[ 70.199393][ T9350] vfs_write+0xb0f/0x14e0
[ 70.199771][ T9350] ksys_write+0x23e/0x490
[ 70.200149][ T9350] __x64_sys_write+0x97/0xf0
[ 70.200570][ T9350] x64_sys_call+0x3015/0x3cf0
[ 70.201065][ T9350] do_syscall_64+0xd9/0x1d0
[ 70.201506][ T9350] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 70.202054][ T9350]
[ 70.202279][ T9350] Uninit was created at:
[ 70.202693][ T9350] __kmalloc_noprof+0x621/0xf80
[ 70.203149][ T9350] hfsplus_find_init+0x8d/0x1d0
[ 70.203602][ T9350] hfsplus_file_extend+0x6ca/0x1cf0
[ 70.204087][ T9350] hfsplus_get_block+0xe16/0x17b0
[ 70.204561][ T9350] __block_write_begin_int+0x962/0x2ce0
[ 70.205074][ T9350] cont_write_begin+0x1000/0x1950
[ 70.205547][ T9350] hfsplus_write_begin+0x85/0x130
[ 70.206017][ T9350] generic_perform_write+0x3e8/0x1060
[ 70.206519][ T9350] __generic_file_write_iter+0x215/0x460
[ 70.207042][ T9350] generic_file_write_iter+0x109/0x5e0
[ 70.207552][ T9350] vfs_write+0xb0f/0x14e0
[ 70.207961][ T9350] ksys_write+0x23e/0x490
[ 70.208375][ T9350] __x64_sys_write+0x97/0xf0
[ 70.208810][ T9350] x64_sys_call+0x3015/0x3cf0
[ 70.209255][ T9350] do_syscall_64+0xd9/0x1d0
[ 70.209680][ T9350] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 70.210230][ T9350]
[ 70.210454][ T9350] CPU: 2 UID: 0 PID: 9350 Comm: repro Not tainted 6.12.0-rc5 #5
[ 70.211174][ T9350] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 70.212115][ T9350] =====================================================
[ 70.212734][ T9350] Disabling lock debugging due to kernel taint
[ 70.213284][ T9350] Kernel panic - not syncing: kmsan.panic set ...
[ 70.213858][ T9350] CPU: 2 UID: 0 PID: 9350 Comm: repro Tainted: G B 6.12.0-rc5 #5
[ 70.214679][ T9350] Tainted: [B]=BAD_PAGE
[ 70.215057][ T9350] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 70.215999][ T9350] Call Trace:
[ 70.216309][ T9350] <TASK>
[ 70.216585][ T9350] dump_stack_lvl+0x1fd/0x2b0
[ 70.217025][ T9350] dump_stack+0x1e/0x30
[ 70.217421][ T9350] panic+0x502/0xca0
[ 70.217803][ T9350] ? kmsan_get_metadata+0x13e/0x1c0
[ 70.218294][ Message fromT sy9350] kmsan_report+0x296/slogd@syzkaller 0x2aat Aug 18 22:11:058 ...
kernel
:[ 70.213284][ T9350] Kernel panic - not syncing: kmsan.panic [ 70.220179][ T9350] ? kmsan_get_metadata+0x13e/0x1c0
set ...
[ 70.221254][ T9350] ? __msan_warning+0x96/0x120
[ 70.222066][ T9350] ? __hfsplus_ext_cache_extent+0x7d0/0x990
[ 70.223023][ T9350] ? hfsplus_file_extend+0x74f/0x1cf0
[ 70.224120][ T9350] ? hfsplus_get_block+0xe16/0x17b0
[ 70.224946][ T9350] ? __block_write_begin_int+0x962/0x2ce0
[ 70.225756][ T9350] ? cont_write_begin+0x1000/0x1950
[ 70.226337][ T9350] ? hfsplus_write_begin+0x85/0x130
[ 70.226852][ T9350] ? generic_perform_write+0x3e8/0x1060
[ 70.227405][ T9350] ? __generic_file_write_iter+0x215/0x460
[ 70.227979][ T9350] ? generic_file_write_iter+0x109/0x5e0
[ 70.228540][ T9350] ? vfs_write+0xb0f/0x14e0
[ 70.228997][ T9350] ? ksys_write+0x23e/0x490
---truncated---
来源: 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
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_ext_cache_extent中未初始化值问题，可能导致KMSAN报告错误。
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-2025-40244 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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同批安全公告 · Linux · 2025-12-04 · 共 53 条
| CVE-2025-40252 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-40261 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-40258 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-40257 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-40253 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40266 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40245 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40251 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40262 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40250 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40248 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40249 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40214 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40243 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40241 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40233 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40216 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40215 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40240 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40242 | 7.0 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 53 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2025-40244
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