1. 漏洞描述

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved: do_change_type() now refuses to operate on unmounted mounts or mounts not belonging to the caller's mount namespace. This change aligns permission checking with the rest of mount(2).(CVE-2025-38498)

In the Linux kernel, the following vulnerability has been resolved:

ftrace: Also allocate and copy hash for reading of filter files

Currently the reader of set_ftrace_filter and set_ftrace_notrace just adds
the pointer to the global tracer hash to its iterator. Unlike the writer
that allocates a copy of the hash, the reader keeps the pointer to the
filter hashes. This is problematic because this pointer is static across
function calls that release the locks that can update the global tracer
hashes. This can cause UAF and similar bugs.

Allocate and copy the hash for reading the filter files like it is done
for the writers. This not only fixes UAF bugs, but also makes the code a
bit simpler as it doesn't have to differentiate when to free the
iterator's hash between writers and readers.(CVE-2025-39689)

2. 影响范围

3. 影响组件

4. 修复版本

5. 修复方法

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

6. 下载链接

KY3.4-5A:

x86_64:

     bpftool   

     kernel   

     kernel-devel   

     kernel-source   

     kernel-tools   

     kernel-tools-devel   

     perf   

     python2-perf   

     python3-perf   

aarch64:

     bpftool   

     kernel   

     kernel-devel   

     kernel-source   

     kernel-tools   

     kernel-tools-devel   

     perf   

     python2-perf   

     python3-perf