uio_hv_generic：修复 hv_uio_rescind 中的内核空指针取消引用（CVE-2024-46739）

CVE编号

CVE-2024-46739

利用情况

暂无

补丁情况

N/A

披露时间

2024-09-18

漏洞描述

In the Linux kernel, the following vulnerability has been resolved: uio_hv_generic: Fix kernel NULL pointer dereference in hv_uio_rescind For primary VM Bus channels, primary_channel pointer is always NULL. This pointer is valid only for the secondary channels. Also, rescind callback is meant for primary channels only. Fix NULL pointer dereference by retrieving the device_obj from the parent for the primary channel.

解决建议

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
https://git.kernel.org/stable/c/1d8e020e51ab07e40f9dd00b52f1da7d96fec04c
https://git.kernel.org/stable/c/2be373469be1774bbe03b0fa7e2854e65005b1cc
https://git.kernel.org/stable/c/3005091cd537ef8cdb7530dcb2ecfba8d2ef475c
https://git.kernel.org/stable/c/3d414b64ecf6fd717d7510ffb893c6f23acbf50e
https://git.kernel.org/stable/c/928e399e84f4e80307dce44e89415115c473275b
https://git.kernel.org/stable/c/de6946be9c8bc7d2279123433495af7c21011b99
https://git.kernel.org/stable/c/f38f46da80a2ab7d1b2f8fcb444c916034a2dac4
https://git.kernel.org/stable/c/fb1adbd7e50f3d2de56d0a2bb0700e2e819a329e

CVSS3评分 N/A

• 攻击路径 N/A
• 攻击复杂度 N/A
• 权限要求 N/A
• 影响范围 N/A
• 用户交互 N/A
• 可用性 N/A
• 保密性 N/A
• 完整性 N/A

N/A

CWE-ID	漏洞类型

Exp相关链接

- avd.aliyun.com