一、 漏洞 CVE-2024-50186 基础信息
漏洞标题
Linux内核pf->create失败时未明确释放sk指针漏洞
来源：AIGC 神龙大模型
漏洞描述信息
N/A
来源：AIGC 神龙大模型
CVSS信息
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
来源：AIGC 神龙大模型
漏洞类别
释放后使用
来源：AIGC 神龙大模型
漏洞标题
net: explicitly clear the sk pointer, when pf->create fails
来源：美国国家漏洞数据库 NVD
漏洞描述信息
In the Linux kernel, the following vulnerability has been resolved: net: explicitly clear the sk pointer, when pf->create fails We have recently noticed the exact same KASAN splat as in commit 6cd4a78d962b ("net: do not leave a dangling sk pointer, when socket creation fails"). The problem is that commit did not fully address the problem, as some pf->create implementations do not use sk_common_release in their error paths. For example, we can use the same reproducer as in the above commit, but changing ping to arping. arping uses AF_PACKET socket and if packet_create fails, it will just sk_free the allocated sk object. While we could chase all the pf->create implementations and make sure they NULL the freed sk object on error from the socket, we can't guarantee future protocols will not make the same mistake. So it is easier to just explicitly NULL the sk pointer upon return from pf->create in __sock_create. We do know that pf->create always releases the allocated sk object on error, so if the pointer is not NULL, it is definitely dangling.
来源：美国国家漏洞数据库 NVD
CVSS信息
N/A
来源：美国国家漏洞数据库 NVD
漏洞类别
N/A
来源：美国国家漏洞数据库 NVD
漏洞标题
Linux kernel 安全漏洞
来源：中国国家信息安全漏洞库 CNNVD
漏洞描述信息
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，该漏洞源于在socket创建失败时sk指针未清除。
来源：中国国家信息安全漏洞库 CNNVD
CVSS信息
N/A
来源：中国国家信息安全漏洞库 CNNVD
漏洞类别
其他
来源：中国国家信息安全漏洞库 CNNVD
二、漏洞 CVE-2024-50186 的公开POC
# POC 描述 源链接 神龙链接
三、漏洞 CVE-2024-50186 的情报信息

  • 标题： net: explicitly clear the sk pointer, when pf->create fails - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    net: explicitly clear the sk pointer, when pf->create fails - kernel/git/stable/linux.git - Linux kernel stable tree

  • 标题： net: explicitly clear the sk pointer, when pf->create fails - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    net: explicitly clear the sk pointer, when pf->create fails - kernel/git/stable/linux.git - Linux kernel stable tree

  • 标题： net: explicitly clear the sk pointer, when pf->create fails - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    net: explicitly clear the sk pointer, when pf->create fails - kernel/git/stable/linux.git - Linux kernel stable tree

  • 标题： net: explicitly clear the sk pointer, when pf->create fails - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    net: explicitly clear the sk pointer, when pf->create fails - kernel/git/stable/linux.git - Linux kernel stable tree

  • 标题： net: explicitly clear the sk pointer, when pf->create fails - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    net: explicitly clear the sk pointer, when pf->create fails - kernel/git/stable/linux.git - Linux kernel stable tree
  • https://nvd.nist.gov/vuln/detail/CVE-2024-50186