CVE-2025-39683 (CNNVD-202509-768)
中文标题:
Linux kernel 安全漏洞
英文标题:
tracing: Limit access to parser->buffer when trace_get_user failed
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tracing模块在trace_get_user失败时未限制对parser->buffer的访问。
英文描述:
In the Linux kernel, the following vulnerability has been resolved: tracing: Limit access to parser->buffer when trace_get_user failed When the length of the string written to set_ftrace_filter exceeds FTRACE_BUFF_MAX, the following KASAN alarm will be triggered: BUG: KASAN: slab-out-of-bounds in strsep+0x18c/0x1b0 Read of size 1 at addr ffff0000d00bd5ba by task ash/165 CPU: 1 UID: 0 PID: 165 Comm: ash Not tainted 6.16.0-g6bcdbd62bd56-dirty Hardware name: linux,dummy-virt (DT) Call trace: show_stack+0x34/0x50 (C) dump_stack_lvl+0xa0/0x158 print_address_description.constprop.0+0x88/0x398 print_report+0xb0/0x280 kasan_report+0xa4/0xf0 __asan_report_load1_noabort+0x20/0x30 strsep+0x18c/0x1b0 ftrace_process_regex.isra.0+0x100/0x2d8 ftrace_regex_release+0x484/0x618 __fput+0x364/0xa58 ____fput+0x28/0x40 task_work_run+0x154/0x278 do_notify_resume+0x1f0/0x220 el0_svc+0xec/0xf0 el0t_64_sync_handler+0xa0/0xe8 el0t_64_sync+0x1ac/0x1b0 The reason is that trace_get_user will fail when processing a string longer than FTRACE_BUFF_MAX, but not set the end of parser->buffer to 0. Then an OOB access will be triggered in ftrace_regex_release-> ftrace_process_regex->strsep->strpbrk. We can solve this problem by limiting access to parser->buffer when trace_get_user failed.
CWE类型:
标签:
受影响产品
| 厂商 | 产品 | 版本 | 版本范围 | 平台 | CPE |
|---|---|---|---|---|---|
| Linux | Linux | 24cd31752f47699b89b4b3471155c8e599a1a23a | - | - |
cpe:2.3:a:linux:linux:24cd31752f47699b89b4b3471155c8e599a1a23a:*:*:*:*:*:*:*
|
| Linux | Linux | e9cb474de7ff7a970c2a3951c12ec7e3113c0c35 | - | - |
cpe:2.3:a:linux:linux:e9cb474de7ff7a970c2a3951c12ec7e3113c0c35:*:*:*:*:*:*:*
|
| Linux | Linux | 6ab671191f64b0da7d547e2ad4dc199ca7e5b558 | - | - |
cpe:2.3:a:linux:linux:6ab671191f64b0da7d547e2ad4dc199ca7e5b558:*:*:*:*:*:*:*
|
| Linux | Linux | 3d9281a4ac7171c808f9507f0937eb236b353905 | - | - |
cpe:2.3:a:linux:linux:3d9281a4ac7171c808f9507f0937eb236b353905:*:*:*:*:*:*:*
|
| Linux | Linux | 0b641b25870f02e2423e494365fc5243cc1e2759 | - | - |
cpe:2.3:a:linux:linux:0b641b25870f02e2423e494365fc5243cc1e2759:*:*:*:*:*:*:*
|
| Linux | Linux | ffd51dbfd2900e50c71b5c069fe407957e52d61f | - | - |
cpe:2.3:a:linux:linux:ffd51dbfd2900e50c71b5c069fe407957e52d61f:*:*:*:*:*:*:*
|
| Linux | Linux | cdd107d7f18158d966c2bc136204fe826dac445c | - | - |
cpe:2.3:a:linux:linux:cdd107d7f18158d966c2bc136204fe826dac445c:*:*:*:*:*:*:*
|
| Linux | Linux | 5.13 | - | - |
cpe:2.3:a:linux:linux:5.13:*:*:*:*:*:*:*
|
| linux | linux_kernel | * | - | - |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
| linux | linux_kernel | 6.17 | - | - |
cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*
|
| debian | debian_linux | 11.0 | - | - |
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
|
解决方案
中文解决方案:
英文解决方案:
临时解决方案:
CVSS评分详情
时间信息
利用信息
数据源详情
| 数据源 | 记录ID | 版本 | 提取时间 |
|---|---|---|---|
| CVE | cve_CVE-2025-39683 |
2025-11-11 15:23:19 | 2025-11-11 07:40:29 |
| NVD | nvd_CVE-2025-39683 |
2025-11-11 15:01:01 | 2025-11-11 07:48:18 |
| CNNVD | cnnvd_CNNVD-202509-768 |
2025-11-11 15:12:56 | 2025-11-11 08:00:15 |
版本与语言
安全公告
变更历史
查看详细变更
- affected_products_count: 8 -> 11
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-202509-768
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- references_count: 7 -> 9
- data_sources: ['cve'] -> ['cve', 'nvd']