摘要:
nbdkit security update
安全等级: Medium
公告ID: KylinSec-SA-2025-2710
发布日期: 2025年8月9日
关联CVE: CVE-2025-47711 CVE-2025-47712
NBD (Network Block Device) is a protocol for accessing Block Devices (hard disks and disk-like things) over a Network. nbdkit is a toolkit for creating NBD servers. The key features are: * Multithreaded NBD server written in C with good performance. * Minimal dependencies for the basic server. * Liberal license (BSD) allows nbdkit to be linked to proprietary libraries or included in proprietary code. * Well-documented, simple plugin API with a stable ABI guarantee. Lets you export “unconventional” block devices easily. * You can write plugins in C, Lua, Perl, Python, OCaml, Ruby, Rust, shell script or Tcl. * Filters can be stacked in front of plugins to transform the output.
Security Fix(es):
There's a flaw in the nbdkit server when handling responses from its plugins regarding the status of data blocks. If a client makes a specific request for a very large data range, and a plugin responds with an even larger single block, the nbdkit server can encounter a critical internal error, leading to a denial-of-service.(CVE-2025-47711)
A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request. When a client requests block status information for a very large data range, exceeding a certain limit, it causes an internal error in the nbdkit, leading to a denial of service.(CVE-2025-47712)
| cve名称 | 产品 | 组件 | 是否受影响 |
|---|---|---|---|
| CVE-2025-47711 | V6 | nbdkit | Fixed |
| CVE-2025-47712 | V6 | nbdkit | Fixed |
| 软件名称 | 架构 | 版本号 |
|---|---|---|
| nbdkit-bash-completion | noarch | 1.32.6-2.ks6 |
| nbdkit-help | noarch | 1.32.6-2.ks6 |
| nbdkit | x86_64 | 1.32.6-2.ks6 |
| nbdkit-basic-filters | x86_64 | 1.32.6-2.ks6 |
| nbdkit-basic-plugins | x86_64 | 1.32.6-2.ks6 |
| nbdkit-devel | x86_64 | 1.32.6-2.ks6 |
| nbdkit-guestfs-plugin | x86_64 | 1.32.6-2.ks6 |
| nbdkit-libvirt-plugin | x86_64 | 1.32.6-2.ks6 |
| nbdkit-ocaml-plugin | x86_64 | 1.32.6-2.ks6 |
| nbdkit-ocaml-plugin-devel | x86_64 | 1.32.6-2.ks6 |
| nbdkit-perl-plugin | x86_64 | 1.32.6-2.ks6 |
| nbdkit-plugins | x86_64 | 1.32.6-2.ks6 |
| nbdkit-python3-plugin | x86_64 | 1.32.6-2.ks6 |
| nbdkit-server | x86_64 | 1.32.6-2.ks6 |
| nbdkit-vddk-plugin | x86_64 | 1.32.6-2.ks6 |
| nbdkit | aarch64 | 1.32.6-2.ks6 |
| nbdkit-basic-filters | aarch64 | 1.32.6-2.ks6 |
| nbdkit-basic-plugins | aarch64 | 1.32.6-2.ks6 |
| nbdkit-devel | aarch64 | 1.32.6-2.ks6 |
| nbdkit-guestfs-plugin | aarch64 | 1.32.6-2.ks6 |
| nbdkit-libvirt-plugin | aarch64 | 1.32.6-2.ks6 |
| nbdkit-ocaml-plugin | aarch64 | 1.32.6-2.ks6 |
| nbdkit-ocaml-plugin-devel | aarch64 | 1.32.6-2.ks6 |
| nbdkit-perl-plugin | aarch64 | 1.32.6-2.ks6 |
| nbdkit-plugins | aarch64 | 1.32.6-2.ks6 |
| nbdkit-python3-plugin | aarch64 | 1.32.6-2.ks6 |
| nbdkit-server | aarch64 | 1.32.6-2.ks6 |
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
