一、 漏洞 CVE-2024-47728 基础信息
漏洞标题
bpf: 在错误的情况下将Former ARG_PTR_TO_{LONG,INT}参数置为0
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:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
来源：AIGC 神龙大模型
漏洞类别
在移除最后引用时对内存的释放不恰当(内存泄露)
来源：AIGC 神龙大模型
漏洞标题
bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error
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: bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error For all non-tracing helpers which formerly had ARG_PTR_TO_{LONG,INT} as input arguments, zero the value for the case of an error as otherwise it could leak memory. For tracing, it is not needed given CAP_PERFMON can already read all kernel memory anyway hence bpf_get_func_arg() and bpf_get_func_ret() is skipped in here. Also, the MTU helpers mtu_len pointer value is being written but also read. Technically, the MEM_UNINIT should not be there in order to always force init. Removing MEM_UNINIT needs more verifier rework though: MEM_UNINIT right now implies two things actually: i) write into memory, ii) memory does not have to be initialized. If we lift MEM_UNINIT, it then becomes: i) read into memory, ii) memory must be initialized. This means that for bpf_*_check_mtu() we're readding the issue we're trying to fix, that is, it would then be able to write back into things like .rodata BPF maps. Follow-up work will rework the MEM_UNINIT semantics such that the intent can be better expressed. For now just clear the *mtu_len on error path which can be lifted later again.
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bpf非跟踪助手中，当发生错误时未能将ARG_PTR_TO_{LONG,INT}参数值清零，可能导致内存泄漏。
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-2024-47728 的公开POC
# POC 描述 源链接 神龙链接
三、漏洞 CVE-2024-47728 的情报信息

  • 标题： bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error - kernel/git/stable/linux.git - Linux kernel stable tree

  • 标题： bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error - kernel/git/stable/linux.git - Linux kernel stable tree

  • 标题： bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error - kernel/git/stable/linux.git - Linux kernel stable tree

  • 标题： bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error - kernel/git/stable/linux.git - Linux kernel stable tree

  • 标题： bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error - kernel/git/stable/linux.git - Linux kernel stable tree
  • https://nvd.nist.gov/vuln/detail/CVE-2024-47728