CVE-2024-50002— 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static_call在模块初始化失败时处理不当可能导致的广义指针错误引用。
可能的 ATT&CK 技术 1 AI
T1200 · Hardware Additions影响版本矩阵 14
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 9183c3f9ed710a8edf1a61e8a96d497258d26e08< ed4c8ce0f307f2ab8778aeb40a8866d171e8f128 |
affected |
9183c3f9ed710a8edf1a61e8a96d497258d26e08< b566c7d8a2de403ccc9d8a06195e19bbb386d0e4 |
affected | ||
9183c3f9ed710a8edf1a61e8a96d497258d26e08< c0abbbe8c98c077292221ec7e2baa667c9f0974c |
affected | ||
9183c3f9ed710a8edf1a61e8a96d497258d26e08< 2b494471797bff3d257e99dc0a7abb0c5ff3b4cd |
affected | ||
9183c3f9ed710a8edf1a61e8a96d497258d26e08< 9c48c2b53191bf991361998f5bb97b8f2fc5a89c |
affected | ||
9183c3f9ed710a8edf1a61e8a96d497258d26e08< 4b30051c4864234ec57290c3d142db7c88f10d8a |
affected | ||
5.10 |
affected | ||
< 5.10 |
unaffected | ||
| … +6 条更多 | |||
获取后续新漏洞提醒
登录后订阅
一、 漏洞 CVE-2024-50002 基础信息
漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
查看神龙十问 ↗
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
static_call: Handle module init failure correctly in static_call_del_module()
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
static_call: Handle module init failure correctly in static_call_del_module()
Module insertion invokes static_call_add_module() to initialize the static
calls in a module. static_call_add_module() invokes __static_call_init(),
which allocates a struct static_call_mod to either encapsulate the built-in
static call sites of the associated key into it so further modules can be
added or to append the module to the module chain.
If that allocation fails the function returns with an error code and the
module core invokes static_call_del_module() to clean up eventually added
static_call_mod entries.
This works correctly, when all keys used by the module were converted over
to a module chain before the failure. If not then static_call_del_module()
causes a #GP as it blindly assumes that key::mods points to a valid struct
static_call_mod.
The problem is that key::mods is not a individual struct member of struct
static_call_key, it's part of a union to save space:
union {
/* bit 0: 0 = mods, 1 = sites */
unsigned long type;
struct static_call_mod *mods;
struct static_call_site *sites;
};
key::sites is a pointer to the list of built-in usage sites of the static
call. The type of the pointer is differentiated by bit 0. A mods pointer
has the bit clear, the sites pointer has the bit set.
As static_call_del_module() blidly assumes that the pointer is a valid
static_call_mod type, it fails to check for this failure case and
dereferences the pointer to the list of built-in call sites, which is
obviously bogus.
Cure it by checking whether the key has a sites or a mods pointer.
If it's a sites pointer then the key is not to be touched. As the sites are
walked in the same order as in __static_call_init() the site walk can be
terminated because all subsequent sites have not been touched by the init
code due to the error exit.
If it was converted before the allocation fail, then the inner loop which
searches for a module match will find nothing.
A fail in the second allocation in __static_call_init() is harmless and
does not require special treatment. The first allocation succeeded and
converted the key to a module chain. That first entry has mod::mod == NULL
and mod::next == NULL, so the inner loop of static_call_del_module() will
neither find a module match nor a module chain. The next site in the walk
was either already converted, but can't match the module, or it will exit
the outer loop because it has a static_call_site pointer and not a
static_call_mod pointer.
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static_call在模块初始化失败时处理不当可能导致的广义指针错误引用。
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-2024-50002 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
高级
未找到公开 POC。
登录以生成 AI POC三、漏洞 CVE-2024-50002 的情报信息
请登录查看更多情报信息。
CVE-2024-50002 补丁与修复 (4)
同批安全公告 · Linux · 2024-10-21 · 共 372 条
| CVE-2024-50033 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-49855 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-47695 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-48985 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49003 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-50043 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-50047 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-50046 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-49996 | 9.4 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-47678 | 9.4 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-48962 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-49950 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-49939 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48967 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48964 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50029 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-49930 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-50041 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-49936 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48954 | 8.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 372 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2024-50002
暂无评论