CVE-2025-38345

一、漏洞信息
 漏洞编号：[CVE-2025-38345](https://nvd.nist.gov/vuln/detail/CVE-2025-38345)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.4.0,6.6.0
 CVSS V3.x分值：
  BaseScore：5.5 Medium
  Vector：CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:ACPICA: fix acpi operand cache leak in dswstate.cACPICA commit 987a3b5cf7175916e2a4b6ea5b8e70f830dfe732I found an ACPI cache leak in ACPI early termination and boot continuing case.When early termination occurs due to malicious ACPI table, Linux kernelterminates ACPI function and continues to boot process. While kernel terminatesACPI function, kmem_cache_destroy() reports Acpi-Operand cache leak.Boot log of ACPI operand cache leak is as follows:>[    0.585957] ACPI: Added _OSI(Module Device)>[    0.587218] ACPI: Added _OSI(Processor Device)>[    0.588530] ACPI: Added _OSI(3.0 _SCP Extensions)>[    0.589790] ACPI: Added _OSI(Processor Aggregator Device)>[    0.591534] ACPI Error: Illegal I/O port address/length above 64K: C806E00000004002/0x2 (20170303/hwvalid-155)>[    0.594351] ACPI Exception: AE_LIMIT, Unable to initialize fixed events (20170303/evevent-88)>[    0.597858] ACPI: Unable to start the ACPI Interpreter>[    0.599162] ACPI Error: Could not remove SCI handler (20170303/evmisc-281)>[    0.601836] kmem_cache_destroy Acpi-Operand: Slab cache still has objects>[    0.603556] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.12.0-rc5 #26>[    0.605159] Hardware name: innotek gmb_h virtual_box/virtual_box, BIOS virtual_box 12/01/2006>[    0.609177] Call Trace:>[    0.610063]  ? dump_stack+0x5c/0x81>[    0.611118]  ? kmem_cache_destroy+0x1aa/0x1c0>[    0.612632]  ? acpi_sleep_proc_init+0x27/0x27>[    0.613906]  ? acpi_os_delete_cache+0xa/0x10>[    0.617986]  ? acpi_ut_delete_caches+0x3f/0x7b>[    0.619293]  ? acpi_terminate+0xa/0x14>[    0.620394]  ? acpi_init+0x2af/0x34f>[    0.621616]  ? __class_create+0x4c/0x80>[    0.623412]  ? video_setup+0x7f/0x7f>[    0.624585]  ? acpi_sleep_proc_init+0x27/0x27>[    0.625861]  ? do_one_initcall+0x4e/0x1a0>[    0.627513]  ? kernel_init_freeable+0x19e/0x21f>[    0.628972]  ? rest_init+0x80/0x80>[    0.630043]  ? kernel_init+0xa/0x100>[    0.631084]  ? ret_from_fork+0x25/0x30>[    0.633343] vgaarb: loaded>[    0.635036] EDAC MC: Ver: 3.0.0>[    0.638601] PCI: Probing PCI hardware>[    0.639833] PCI host bridge to bus 0000:00>[    0.641031] pci_bus 0000:00: root bus resource [io  0x0000-0xffff]> ... Continue to boot and log is omitted ...I analyzed this memory leak in detail and found acpi_ds_obj_stack_pop_and_delete() function miscalculated the top of the stack. acpi_ds_obj_stack_push()function uses walk_state->operand_index for start position of the top, butacpi_ds_obj_stack_pop_and_delete() function considers index 0 for it.Therefore, this causes acpi operand memory leak.This cache leak causes a security threat because an old kernel (<= 4.9) showsmemory locations of kernel functions in stack dump. Some malicious userscould use this information to neutralize kernel ASLR.I made a patch to fix ACPI operand cache leak.
 漏洞公开时间：2025-07-10 17:15:29
 漏洞创建时间：2025-07-10 21:11:45
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2025-38345
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
|  | https://www.suse.com/security/cve/CVE-2025-38345.html |  |
|  | https://git.kernel.org/stable/c/5a68893b594ee6ce0efce5f74c07e64e9dd0c2c4 |  |
|  | https://access.redhat.com/security/cve/CVE-2025-38345 |  |
|  | https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html |  |
|  | https://linux.oracle.com/cve/CVE-2025-38345.html |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38345 |  |
|  | https://linux.oracle.com/errata/ELSA-2025-20552.html |  |
|  | https://git.kernel.org/stable/c/4fa430a8bca708c7776f6b9d001257f48b19a5b7 |  |
|  | https://git.kernel.org/stable/c/1c0d9115a001979cb446ba5e8331dd1d29a10bbf |  |
|  | https://www.cve.org/CVERecord?id=CVE-2025-38345 |  |
|  | https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html |  |
|  | https://git.kernel.org/stable/c/64c4bcf0308dd1d752ef31d560040b8725e29984 |  |
|  | https://linux.oracle.com/errata/ELSA-2025-20553.html |  |
|  | https://lore.kernel.org/linux-cve-announce/2025071035-CVE-2025-38345-ef5c@gregkh/T |  |
|  | https://bugzilla.suse.com/1246337 |  |
|  | https://git.kernel.org/stable/c/156fd20a41e776bbf334bd5e45c4f78dfc90ce1c |  |
|  | https://security-tracker.debian.org/tracker/CVE-2025-38345 |  |
|  | https://git.kernel.org/stable/c/755a8006b76792922ff7b1c9674d8897a476b5d7 |  |
|  | https://linux.oracle.com/errata/ELSA-2025-20551.html |  |
|  | https://git.kernel.org/stable/c/e0783910ca4368b01466bc8dcdcc13c3e0b7db53 |  |
|  | https://bugzilla.redhat.com/show_bug.cgi?id=2379239 |  |
|  | https://git.kernel.org/stable/c/76d37168155880f2b04a0aad92ceb0f9d799950e |  |

</details>

漏洞分析指导链接：
  https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
 漏洞数据来源:
  七彩瞬析开源风险感知平台
 漏洞补丁信息：
  <details>
<summary>详情(点击展开)</summary>

| 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源  |
| ------- | -------- | ------- | -------- | --------- |
| gregkh/linux |  | https://git.kernel.org/stable/c/156fd20a41e776bbf334bd5e45c4f78dfc90ce1c.patch |  | ljqc |
|  |  | https://git.kernel.org/stable/c/5a68893b594ee6ce0efce5f74c07e64e9dd0c2c4 |  | nvd |
|  |  | https://git.kernel.org/stable/c/4fa430a8bca708c7776f6b9d001257f48b19a5b7 |  | nvd |
|  |  | https://git.kernel.org/stable/c/1c0d9115a001979cb446ba5e8331dd1d29a10bbf |  | nvd |
|  |  | https://git.kernel.org/stable/c/64c4bcf0308dd1d752ef31d560040b8725e29984 |  | nvd |
|  |  | https://git.kernel.org/stable/c/156fd20a41e776bbf334bd5e45c4f78dfc90ce1c |  | nvd |
|  |  | https://git.kernel.org/stable/c/755a8006b76792922ff7b1c9674d8897a476b5d7 |  | nvd |
|  |  | https://git.kernel.org/stable/c/e0783910ca4368b01466bc8dcdcc13c3e0b7db53 |  | nvd |
|  |  | https://git.kernel.org/stable/c/76d37168155880f2b04a0aad92ceb0f9d799950e |  | nvd |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
                            In the Linux kernel, the following vulnerability has been resolved:ACPICA: fix acpi operand cache leak in dswstate.cACPICA commit 987a3b5cf7175916e2a4b6ea5b8e70f830dfe732I found an ACPI cache leak in ACPI early termination and boot continuing case.When early termination occurs due to malicious ACPI table, Linux kernelterminates ACPI function and continues to boot process. While kernel terminatesACPI function, kmem_cache_destroy() reports Acpi-Operand cache leak.Boot log of ACPI operand cache leak is as follows:<spanclass= q >&gt;[    0.585957] ACPI: Added _OSI(Module Device)&gt;[    0.587218] ACPI: Added _OSI(Processor Device)&gt;[    0.588530] ACPI: Added _OSI(3.0 _SCP Extensions)&gt;[    0.589790] ACPI: Added _OSI(Processor Aggregator Device)&gt;[    0.591534] ACPI Error: Illegal I/O port address/length above 64K: C806E00000004002/0x2 (20170303/hwvalid-155)&gt;[    0.594351] ACPI Exception: AE_LIMIT, Unable to initialize fixed events (20170303/evevent-88)&gt;[    0.597858] ACPI: Unable to start the ACPI Interpreter&gt;[    0.599162] ACPI Error: Could not remove SCI handler (20170303/evmisc-281)&gt;[    0.601836] kmem_cache_destroy Acpi-Operand: Slab cache still has objects&gt;[    0.603556] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.12.0-rc5 #26&gt;[    0.605159] Hardware name: innotek gmb_h virtual_box/virtual_box, BIOS virtual_box 12/01/2006&gt;[    0.609177] Call Trace:&gt;[    0.610063]  ? dump_stack+0x5c/0x81&gt;[    0.611118]  ? kmem_cache_destroy+0x1aa/0x1c0&gt;[    0.612632]  ? acpi_sleep_proc_init+0x27/0x27&gt;[    0.613906]  ? acpi_os_delete_cache+0xa/0x10&gt;[    0.617986]  ? acpi_ut_delete_caches+0x3f/0x7b&gt;[    0.619293]  ? acpi_terminate+0xa/0x14&gt;[    0.620394]  ? acpi_init+0x2af/0x34f&gt;[    0.621616]  ? __class_create+0x4c/0x80&gt;[    0.623412]  ? video_setup+0x7f/0x7f&gt;[    0.624585]  ? acpi_sleep_proc_init+0x27/0x27&gt;[    0.625861]  ? do_one_initcall+0x4e/0x1a0&gt;[    0.627513]  ? kernel_init_freeable+0x19e/0x21f&gt;[    0.628972]  ? rest_init+0x80/0x80&gt;[    0.630043]  ? kernel_init+0xa/0x100&gt;[    0.631084]  ? ret_from_fork+0x25/0x30&gt;[    0.633343] vgaarb: loaded&gt;[    0.635036] EDAC MC: Ver: 3.0.0&gt;[    0.638601] PCI: Probing PCI hardware&gt;[    0.639833] PCI host bridge to bus 0000:00&gt;[    0.641031] pci_bus 0000:00: root bus resource [io  0x0000-0xffff]&gt; ... Continue to boot and log is omitted ...</span>I analyzed this memory leak in detail and found acpi_ds_obj_stack_pop_and_delete() function miscalculated the top of the stack. acpi_ds_obj_stack_push()function uses walk_state-&gt;operand_index for start position of the top, butacpi_ds_obj_stack_pop_and_delete() function considers index 0 for it.Therefore, this causes acpi operand memory leak.This cache leak causes a security threat because an old kernel (&lt;= 4.9) showsmemory locations of kernel functions in stack dump. Some malicious userscould use this information to neutralize kernel ASLR.I made a patch to fix ACPI operand cache leak.The Linux kernel CVE team has assigned CVE-2025-38345 to this issue.             
 openEuler评分：
  3.9
 Vector：CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
 受影响版本排查(受影响/不受影响)：
  1.openEuler-22.03-LTS-SP3(5.10.0):受影响
2.openEuler-22.03-LTS-SP4(5.10.0):受影响
3.openEuler-24.03-LTS:受影响
4.openEuler-24.03-LTS-SP1:受影响
5.openEuler-24.03-LTS-SP2:受影响
6.master(6.12.33):不受影响
7.openEuler-20.03-LTS-SP4:不受影响
8.openEuler-24.03-LTS-Next:不受影响

修复是否涉及abi变化(是/否)：
  1.master(6.12.33):否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS-SP3(5.10.0):否
4.openEuler-22.03-LTS-SP4(5.10.0):否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-24.03-LTS-SP1:否
8.openEuler-24.03-LTS-SP2:否

原因说明：
  1.openEuler-22.03-LTS-SP3(5.10.0):正常修复
2.openEuler-22.03-LTS-SP4(5.10.0):正常修复
3.openEuler-24.03-LTS:正常修复
4.openEuler-24.03-LTS-SP1:正常修复
5.openEuler-24.03-LTS-SP2:正常修复
6.master(6.12.33):不受影响-漏洞代码不能被攻击者触发
7.openEuler-20.03-LTS-SP4:不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发

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