fbdev：savage：当 savagefb_check_var 失败时处理错误返回（CVE-2024-39475）

CVE编号

CVE-2024-39475

利用情况

暂无

补丁情况

N/A

披露时间

2024-07-05

漏洞描述

In the Linux kernel, the following vulnerability has been resolved: fbdev: savage: Handle err return when savagefb_check_var failed The commit 04e5eac8f3ab("fbdev: savage: Error out if pixclock equals zero") checks the value of pixclock to avoid divide-by-zero error. However the function savagefb_probe doesn't handle the error return of savagefb_check_var. When pixclock is 0, it will cause divide-by-zero error.

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/32f92b0078ebf79dbe4827288e0acb50d89d3d5b
https://git.kernel.org/stable/c/4b2c67e30b4e1d2ae19dba8b8e8f3b5fd3cf8089
https://git.kernel.org/stable/c/5f446859bfa46df0ffb34149499f48a2c2d8cd95
https://git.kernel.org/stable/c/6ad959b6703e2c4c5d7af03b4cfd5ff608036339
https://git.kernel.org/stable/c/86435f39c18967cdd937d7a49ba539cdea7fb547
https://git.kernel.org/stable/c/b8385ff814ca4cb7e63789841e6ec2a14c73e1e8
https://git.kernel.org/stable/c/be754cbd77eaf2932408a4e18532e4945274a5c7
https://git.kernel.org/stable/c/edaa57480b876e8203b51df7c3d14a51ea6b09e3

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