一、 漏洞 CVE-2024-49981 基础信息
漏洞标题
媒体组件Venus存在的释放后使用漏洞
来源：AIGC 神龙大模型
漏洞描述信息
在Linux内核中，已解决以下漏洞： 媒体：venus：修复因竞争条件导致的venus_remove中的释放后使用漏洞 在venus_probe中，core->work与venus_sys_error_handler绑定，用于处理错误。代码使用core->sys_err_done来实现同步操作。core->work在venus_event_notify中启动。 如果调用venus_remove，可能会存在未完成的工作。可能的执行序列如下： CPU0 CPU1 |venus_sys_error_handler venus_remove | hfi_destroy | venus_hfi_destroy | kfree(hdev); | |hfi_reinit |venus_hfi_queues_reinit |//使用hdev 通过在venus_remove中取消该工作来修复此漏洞。
来源：AIGC 神龙大模型
CVSS信息
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
来源：AIGC 神龙大模型
漏洞类别
使用共享资源的并发执行不恰当同步问题(竞争条件)
来源：AIGC 神龙大模型
漏洞标题
media: venus: fix use after free bug in venus_remove due to race condition
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: media: venus: fix use after free bug in venus_remove due to race condition in venus_probe, core->work is bound with venus_sys_error_handler, which is used to handle error. The code use core->sys_err_done to make sync work. The core->work is started in venus_event_notify. If we call venus_remove, there might be an unfished work. The possible sequence is as follows: CPU0 CPU1 |venus_sys_error_handler venus_remove | hfi_destroy | venus_hfi_destroy | kfree(hdev); | |hfi_reinit |venus_hfi_queues_reinit |//use hdev Fix it by canceling the work in venus_remove.
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venus_remove函数中由于竞争条件导致的释放后重用问题，可能允许攻击者通过精心设计的输入触发错误处理程序，从而破坏系统内存。
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-2024-49981 的公开POC
# POC 描述 源链接 神龙链接
三、漏洞 CVE-2024-49981 的情报信息

  • 标题： media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree

  • 标题： media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree

  • 标题： media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree

  • 标题： media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree

  • 标题： media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree

  • 标题： media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree

  • 标题： media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree

  • 标题： media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree

  • 标题： media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

    标签：

    神龙速读
    media: venus: fix use after free bug in venus_remove due to race condition - kernel/git/stable/linux.git - Linux kernel stable tree
  • https://nvd.nist.gov/vuln/detail/CVE-2024-49981