CVE-2025-40008— Linux kernel 安全漏洞
可能的 ATT&CK 技术 1AI
T1059 · Command and Scripting Interpreter影响版本矩阵 16
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 9ff078f5bad8990091f1639347de5e02636e9536< e6684ed39edc35401a3341f85b1ab50a6f89a45d | affected |
19e85d939001946671643f4c16e1de8c633a6ce0< df1fa034c0fc229a63d01ffb20bb919b839cb576 | affected | ||
2ef3cec44c60ae171b287db7fc2aa341586d65ba< f84e48707051812289b6c2684d4df2daa9d3bfbc | affected | ||
2ef3cec44c60ae171b287db7fc2aa341586d65ba< 5855792c6bb9a825607845db3feaddaff0414ec3 | affected | ||
2ef3cec44c60ae171b287db7fc2aa341586d65ba< 85e1ff61060a765d91ee62dc5606d4d547d9d105 | affected | ||
abeede7011da6c88e83ed260b909c140b8c9c250 | affected | ||
6.1.94< 6.1.155 | affected | ||
6.6.34< 6.6.109 | affected | ||
| … +8 条更多 | |||
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一、 漏洞 CVE-2025-40008 基础信息
漏洞信息
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Vulnerability Title
kmsan: fix out-of-bounds access to shadow memory
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: kmsan: fix out-of-bounds access to shadow memory Running sha224_kunit on a KMSAN-enabled kernel results in a crash in kmsan_internal_set_shadow_origin(): BUG: unable to handle page fault for address: ffffbc3840291000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 1810067 P4D 1810067 PUD 192d067 PMD 3c17067 PTE 0 Oops: 0000 [#1] SMP NOPTI CPU: 0 UID: 0 PID: 81 Comm: kunit_try_catch Tainted: G N 6.17.0-rc3 #10 PREEMPT(voluntary) Tainted: [N]=TEST Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.17.0-0-gb52ca86e094d-prebuilt.qemu.org 04/01/2014 RIP: 0010:kmsan_internal_set_shadow_origin+0x91/0x100 [...] Call Trace: <TASK> __msan_memset+0xee/0x1a0 sha224_final+0x9e/0x350 test_hash_buffer_overruns+0x46f/0x5f0 ? kmsan_get_shadow_origin_ptr+0x46/0xa0 ? __pfx_test_hash_buffer_overruns+0x10/0x10 kunit_try_run_case+0x198/0xa00 This occurs when memset() is called on a buffer that is not 4-byte aligned and extends to the end of a guard page, i.e. the next page is unmapped. The bug is that the loop at the end of kmsan_internal_set_shadow_origin() accesses the wrong shadow memory bytes when the address is not 4-byte aligned. Since each 4 bytes are associated with an origin, it rounds the address and size so that it can access all the origins that contain the buffer. However, when it checks the corresponding shadow bytes for a particular origin, it incorrectly uses the original unrounded shadow address. This results in reads from shadow memory beyond the end of the buffer's shadow memory, which crashes when that memory is not mapped. To fix this, correctly align the shadow address before accessing the 4 shadow bytes corresponding to each origin.
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kmsan_internal_set_shadow_origin函数中存在越界访问阴影内存的问题，可能导致内核崩溃。
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-2025-40008 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 · 2025-10-20 · 共 13 条
| CVE-2025-40012 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40006 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40017 | Linux kernel 安全漏洞 | |
| CVE-2025-40015 | Linux kernel 安全漏洞 | |
| CVE-2025-40016 | Linux kernel 安全漏洞 | |
| CVE-2025-40013 | Linux kernel 安全漏洞 | |
| CVE-2025-40011 | Linux kernel 安全漏洞 | |
| CVE-2025-40010 | Linux kernel 安全漏洞 | |
| CVE-2025-40009 | Linux kernel 安全漏洞 | |
| CVE-2025-40007 | Linux kernel 安全漏洞 | |
| CVE-2025-40005 | Linux kernel 安全漏洞 | |
| CVE-2025-40004 | Linux kernel 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2025-40008
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