摘要:
systemd security update
安全等级: Medium
公告ID: KylinSec-SA-2025-2696
发布日期: 2025年9月8日
关联CVE: CVE-2025-4598
systemd is a system and service manager that runs as PID 1 and starts the rest of the system.
Security Fix(es):
A vulnerability was found in systemd-coredump. This flaw allows an attacker to force a SUID process to crash and replace it with a non-SUID binary to access the original's privileged process coredump, allowing the attacker to read sensitive data, such as /etc/shadow content, loaded by the original process.
A SUID binary or process has a special type of permission, which allows the process to run with the file owner's permissions, regardless of the user executing the binary. This allows the process to access more restricted data than unprivileged users or processes would be able to. An attacker can leverage this flaw by forcing a SUID process to crash and force the Linux kernel to recycle the process PID before systemd-coredump can analyze the /proc/pid/auxv file. If the attacker wins the race condition, they gain access to the original's SUID process coredump file. They can read sensitive content loaded into memory by the original binary, affecting data confidentiality.(CVE-2025-4598)
| cve名称 | 产品 | 组件 | 是否受影响 |
|---|---|---|---|
| CVE-2025-4598 | KY3.5.3 | systemd | Fixed |
| CVE-2025-4598 | KY3.5.2 | systemd | Fixed |
| 软件名称 | 架构 | 版本号 |
|---|---|---|
| systemd-help | noarch | 249-105.ky3_5.kb1 |
| systemd | x86_64 | 249-105.ky3_5.kb1 |
| systemd-container | x86_64 | 249-105.ky3_5.kb1 |
| systemd-cryptsetup | x86_64 | 249-105.ky3_5.kb1 |
| systemd-devel | x86_64 | 249-105.ky3_5.kb1 |
| systemd-libs | x86_64 | 249-105.ky3_5.kb1 |
| systemd-networkd | x86_64 | 249-105.ky3_5.kb1 |
| systemd-nspawn | x86_64 | 249-105.ky3_5.kb1 |
| systemd-pam | x86_64 | 249-105.ky3_5.kb1 |
| systemd-resolved | x86_64 | 249-105.ky3_5.kb1 |
| systemd-timesyncd | x86_64 | 249-105.ky3_5.kb1 |
| systemd-udev | x86_64 | 249-105.ky3_5.kb1 |
| systemd | aarch64 | 249-105.ky3_5.kb1 |
| systemd-container | aarch64 | 249-105.ky3_5.kb1 |
| systemd-cryptsetup | aarch64 | 249-105.ky3_5.kb1 |
| systemd-devel | aarch64 | 249-105.ky3_5.kb1 |
| systemd-libs | aarch64 | 249-105.ky3_5.kb1 |
| systemd-networkd | aarch64 | 249-105.ky3_5.kb1 |
| systemd-nspawn | aarch64 | 249-105.ky3_5.kb1 |
| systemd-pam | aarch64 | 249-105.ky3_5.kb1 |
| systemd-resolved | aarch64 | 249-105.ky3_5.kb1 |
| systemd-timesyncd | aarch64 | 249-105.ky3_5.kb1 |
| systemd-udev | aarch64 | 249-105.ky3_5.kb1 |
| 软件名称 | 架构 | 版本号 |
|---|---|---|
| systemd-help | noarch | 249-105.ky3_5.kb1 |
| systemd | x86_64 | 249-105.ky3_5.kb1 |
| systemd-container | x86_64 | 249-105.ky3_5.kb1 |
| systemd-cryptsetup | x86_64 | 249-105.ky3_5.kb1 |
| systemd-devel | x86_64 | 249-105.ky3_5.kb1 |
| systemd-libs | x86_64 | 249-105.ky3_5.kb1 |
| systemd-networkd | x86_64 | 249-105.ky3_5.kb1 |
| systemd-nspawn | x86_64 | 249-105.ky3_5.kb1 |
| systemd-pam | x86_64 | 249-105.ky3_5.kb1 |
| systemd-resolved | x86_64 | 249-105.ky3_5.kb1 |
| systemd-timesyncd | x86_64 | 249-105.ky3_5.kb1 |
| systemd-udev | x86_64 | 249-105.ky3_5.kb1 |
| systemd | aarch64 | 249-105.ky3_5.kb1 |
| systemd-container | aarch64 | 249-105.ky3_5.kb1 |
| systemd-cryptsetup | aarch64 | 249-105.ky3_5.kb1 |
| systemd-devel | aarch64 | 249-105.ky3_5.kb1 |
| systemd-libs | aarch64 | 249-105.ky3_5.kb1 |
| systemd-networkd | aarch64 | 249-105.ky3_5.kb1 |
| systemd-nspawn | aarch64 | 249-105.ky3_5.kb1 |
| systemd-pam | aarch64 | 249-105.ky3_5.kb1 |
| systemd-resolved | aarch64 | 249-105.ky3_5.kb1 |
| systemd-timesyncd | aarch64 | 249-105.ky3_5.kb1 |
| systemd-udev | aarch64 | 249-105.ky3_5.kb1 |
方法一：下载安装包进行升级安装
1、通过下载链接下载需要升级的升级包保存，如 xxx.rpm
2、通过rpm命令升级，如 rpm -Uvh xxx.rpm
方法二：通过软件源进行升级安装
1、保持能够连接上互联网
2、通过yum命令升级指定的包，如 yum install 包名
