media: wl128x: Fix atomicity violation in fmc_send_cmd() 漏洞信息(CVE-2024-56700)

一、漏洞 CVE-2024-56700 基础信息

漏洞标题

多媒体: wl128x: 修复fmc_send_cmd()中的原子性违规问题

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:N/I:N/A:H

来源：AIGC 神龙大模型

漏洞类别

对数据真实性的验证不充分

来源：AIGC 神龙大模型

漏洞标题

media: wl128x: Fix atomicity violation in fmc_send_cmd()

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: wl128x: Fix atomicity violation in fmc_send_cmd() Atomicity violation occurs when the fmc_send_cmd() function is executed simultaneously with the modification of the fmdev->resp_skb value. Consider a scenario where, after passing the validity check within the function, a non-null fmdev->resp_skb variable is assigned a null value. This results in an invalid fmdev->resp_skb variable passing the validity check. As seen in the later part of the function, skb = fmdev->resp_skb; when the invalid fmdev->resp_skb passes the check, a null pointer dereference error may occur at line 478, evt_hdr = (void *)skb->data; To address this issue, it is recommended to include the validity check of fmdev->resp_skb within the locked section of the function. This modification ensures that the value of fmdev->resp_skb does not change during the validation process, thereby maintaining its validity. This possible bug is found by an experimental static analysis tool developed by our team. This tool analyzes the locking APIs to extract function pairs that can be concurrently executed, and then analyzes the instructions in the paired functions to identify possible concurrency bugs including data races and atomicity violations.

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nfs/blocklayout模块中未正确处理无效块设备的注销，导致空指针取消引用。

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-2024-56700 的公开POC

#	POC 描述	源链接	神龙链接

三、漏洞 CVE-2024-56700 的情报信息

标题： media: wl128x: Fix atomicity violation in fmc_send_cmd() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
标题： media: wl128x: Fix atomicity violation in fmc_send_cmd() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
标题： media: wl128x: Fix atomicity violation in fmc_send_cmd() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
标题： media: wl128x: Fix atomicity violation in fmc_send_cmd() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
标题： media: wl128x: Fix atomicity violation in fmc_send_cmd() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
标题： media: wl128x: Fix atomicity violation in fmc_send_cmd() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
标题： media: wl128x: Fix atomicity violation in fmc_send_cmd() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
标题： media: wl128x: Fix atomicity violation in fmc_send_cmd() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
标题： media: wl128x: Fix atomicity violation in fmc_send_cmd() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
https://nvd.nist.gov/vuln/detail/CVE-2024-56700