drm/virtio：修复 GEM 句柄创建 UAF（CVE-2022-48899）

CVE编号

CVE-2022-48899

利用情况

暂无

补丁情况

N/A

披露时间

2024-08-21

漏洞描述

In the Linux kernel, the following vulnerability has been resolved: drm/virtio: Fix GEM handle creation UAF Userspace can guess the handle value and try to race GEM object creation with handle close, resulting in a use-after-free if we dereference the object after dropping the handle's reference. For that reason, dropping the handle's reference must be done *after* we are done dereferencing the object.

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/011ecdbcd520c90c344b872ca6b4821f7783b2f8
https://git.kernel.org/stable/c/19ec87d06acfab2313ee82b2a689bf0c154e57ea
https://git.kernel.org/stable/c/52531258318ed59a2dc5a43df2eaf0eb1d65438e
https://git.kernel.org/stable/c/68bcd063857075d2f9edfed6024387ac377923e2
https://git.kernel.org/stable/c/adc48e5e408afbb01d261bd303fd9fbbbaa3e317
https://git.kernel.org/stable/c/d01d6d2b06c0d8390adf8f3ba08aa60b5642ef73

受影响软件情况

#	类型	厂商	产品	版本	影响面
1
	运行在以下环境
	系统	debian_11	linux	*		Up to (excluding) 5.10.178-1
	运行在以下环境
	系统	debian_12	linux	*		Up to (excluding) 6.1.7-1

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