CVE-2023-53478— 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 8
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 27c888da9867725784bad3d6455d6e53b425fa2b< 9fe183f659a2704255e5d84f6ae308c234a113ec | affected |
27c888da9867725784bad3d6455d6e53b425fa2b< 8826d9e7bd51e7656f78baa4472e8e2f5e7069f0 | affected | ||
27c888da9867725784bad3d6455d6e53b425fa2b< 4ccf11c4e8a8e051499d53a12f502196c97a758e | affected | ||
5.18 | affected | ||
< 5.18 | unaffected | ||
6.1.24≤ 6.1.* | unaffected | ||
6.2.11≤ 6.2.* | unaffected | ||
6.3≤ * | unaffected |
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一、 漏洞 CVE-2023-53478 基础信息
漏洞信息
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Vulnerability Title
tracing/synthetic: Fix races on freeing last_cmd
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tracing/synthetic: Fix races on freeing last_cmd Currently, the "last_cmd" variable can be accessed by multiple processes asynchronously when multiple users manipulate synthetic_events node at the same time, it could lead to use-after-free or double-free. This patch add "lastcmd_mutex" to prevent "last_cmd" from being accessed asynchronously. ================================================================ It's easy to reproduce in the KASAN environment by running the two scripts below in different shells. script 1: while : do echo -n -e '\x88' > /sys/kernel/tracing/synthetic_events done script 2: while : do echo -n -e '\xb0' > /sys/kernel/tracing/synthetic_events done ================================================================ double-free scenario: process A process B ------------------- --------------- 1.kstrdup last_cmd 2.free last_cmd 3.free last_cmd(double-free) ================================================================ use-after-free scenario: process A process B ------------------- --------------- 1.kstrdup last_cmd 2.free last_cmd 3.tracing_log_err(use-after-free) ================================================================ Appendix 1. KASAN report double-free: BUG: KASAN: double-free in kfree+0xdc/0x1d4 Free of addr ***** by task sh/4879 Call trace: ... kfree+0xdc/0x1d4 create_or_delete_synth_event+0x60/0x1e8 trace_parse_run_command+0x2bc/0x4b8 synth_events_write+0x20/0x30 vfs_write+0x200/0x830 ... Allocated by task 4879: ... kstrdup+0x5c/0x98 create_or_delete_synth_event+0x6c/0x1e8 trace_parse_run_command+0x2bc/0x4b8 synth_events_write+0x20/0x30 vfs_write+0x200/0x830 ... Freed by task 5464: ... kfree+0xdc/0x1d4 create_or_delete_synth_event+0x60/0x1e8 trace_parse_run_command+0x2bc/0x4b8 synth_events_write+0x20/0x30 vfs_write+0x200/0x830 ... ================================================================ Appendix 2. KASAN report use-after-free: BUG: KASAN: use-after-free in strlen+0x5c/0x7c Read of size 1 at addr ***** by task sh/5483 sh: CPU: 7 PID: 5483 Comm: sh ... __asan_report_load1_noabort+0x34/0x44 strlen+0x5c/0x7c tracing_log_err+0x60/0x444 create_or_delete_synth_event+0xc4/0x204 trace_parse_run_command+0x2bc/0x4b8 synth_events_write+0x20/0x30 vfs_write+0x200/0x830 ... Allocated by task 5483: ... kstrdup+0x5c/0x98 create_or_delete_synth_event+0x80/0x204 trace_parse_run_command+0x2bc/0x4b8 synth_events_write+0x20/0x30 vfs_write+0x200/0x830 ... Freed by task 5480: ... kfree+0xdc/0x1d4 create_or_delete_synth_event+0x74/0x204 trace_parse_run_command+0x2bc/0x4b8 synth_events_write+0x20/0x30 vfs_write+0x200/0x830 ...
来源: 美国国家漏洞数据库 NVD
CVSS Information
N/A
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
N/A
来源: 美国国家漏洞数据库 NVD
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last_cmd变量存在竞争条件，可能导致释放后重用或双重释放。
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-2023-53478 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 · 2025-10-01 · 共 169 条
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| CVE-2022-50451 | Linux kernel 安全漏洞 | |
| CVE-2022-50453 | Linux kernel 安全漏洞 | |
| CVE-2022-50454 | Linux kernel 安全漏洞 | |
| CVE-2022-50457 | Linux kernel 安全漏洞 | |
| CVE-2022-50456 | Linux kernel 安全漏洞 | |
| CVE-2022-50458 | Linux kernel 安全漏洞 | |
| CVE-2022-50460 | Linux kernel 安全漏洞 | |
| CVE-2022-50459 | Linux kernel 安全漏洞 | |
| CVE-2022-50461 | Linux kernel 安全漏洞 | |
| CVE-2022-50467 | Linux kernel 安全漏洞 | |
| CVE-2023-53488 | Linux kernel 安全漏洞 | |
| CVE-2023-53489 | Linux kernel 安全漏洞 | |
| CVE-2022-50469 | Linux kernel 安全漏洞 | |
| CVE-2022-50468 | Linux kernel 安全漏洞 | |
| CVE-2022-50465 | Linux kernel 安全漏洞 | |
| CVE-2022-50463 | Linux kernel 安全漏洞 | |
| CVE-2022-50464 | Linux kernel 安全漏洞 | |
| CVE-2022-50448 | Linux kernel 安全漏洞 |
显示前 20 条，共 169 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2023-53478
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