安全公告/【CVE-2023-4194】

基本信息

漏洞描述

A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 ("tun: tun_chr_open(): correctly initialize socket uid"), - 66b2c338adce ("tap: tap_open(): correctly initialize socket uid"), pass "inode->i_uid" to sock_init_data_uid() as the last parameter and that turns out to not be accurate.

漏洞判定

执行命令yum info PackageName获取软件包版本号，版本小于修复版本，则受此漏洞影响，版本大于等于修复版本，则此漏洞已修复

修复方式

yum update PackageName

参考

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4194 https://nvd.nist.gov/vuln/detail/CVE-2023-4194