偵測

Azure Linux 3.0 安全性更新核心 (CVE-2025-21694)

medium Nessus Plugin ID 235334

語言:

概要

遠端 Azure Linux 主機缺少一個或多個安全性更新。

說明

遠端 Azure Linux 3.0 主機上安裝的核心版本比測試版舊。因此，此版本會受到 CVE-2025-21694 公告中提及的一個弱點影響。

 - 已解決 Linux 核心中的下列弱點：fs/proc: fix softlockup in
 __read_vmcore (part 2) Since commit 5cbcb62dddf5 (fs/proc: fix softlockup in __read_vmcore) the number of softlockups in __read_vmcore at kdump time have gone down, but they still happen sometimes. In a memory constrained environment like the kdump image, a softlockup is not just a harmless message, but it can interfere with things like RCU freeing memory, causing the crashdump to get stuck. The second loop in
 __read_vmcore has a lot more opportunities for natural sleep points, like scheduling out while waiting for a data write to happen, but apparently that is not always enough. Add a cond_resched() to the second loop in __read_vmcore to (hopefully) get rid of the softlockups. (CVE-2025-21694)

請注意，Nessus 並未測試此問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

解決方案

更新受影響的套件。

另請參閱

https://nvd.nist.gov/vuln/detail/CVE-2025-21694

Plugin 詳細資訊

嚴重性: Medium

ID: 235334

檔案名稱: azure_linux_CVE-2025-21694.nasl

版本: 1.1

類型: local

已發布: 2025/5/6

已更新: 2025/5/6

支援的感應器: Nessus

風險資訊

VPR

風險因素: Medium

分數: 4.4

CVSS v2

風險因素: Medium

基本分數: 4.6

時間性分數: 3.4

媒介: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

CVSS 評分資料來源: CVE-2025-21694

CVSS v3

風險因素: Medium

基本分數: 5.5

時間性分數: 4.8

媒介: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

時間媒介: CVSS:3.0/E:U/RL:O/RC:C

弱點資訊

CPE: p-cpe:/a:microsoft:azure_linux:kernel-devel, p-cpe:/a:microsoft:azure_linux:kernel-tools, p-cpe:/a:microsoft:azure_linux:kernel-debuginfo, p-cpe:/a:microsoft:azure_linux:kernel-docs, p-cpe:/a:microsoft:azure_linux:kernel-drivers-intree-amdgpu, p-cpe:/a:microsoft:azure_linux:bpftool, p-cpe:/a:microsoft:azure_linux:kernel-drivers-sound, p-cpe:/a:microsoft:azure_linux:python3-perf, p-cpe:/a:microsoft:azure_linux:kernel-drivers-gpu, p-cpe:/a:microsoft:azure_linux:kernel, p-cpe:/a:microsoft:azure_linux:kernel-dtb, p-cpe:/a:microsoft:azure_linux:kernel-drivers-accessibility, x-cpe:/o:microsoft:azure_linux

必要的 KB 項目: Host/local_checks_enabled, Host/cpu, Host/AzureLinux/release, Host/AzureLinux/rpm-list

可輕鬆利用: No known exploits are available

修補程式發佈日期: 2025/5/1

弱點發布日期: 2023/12/12

參考資訊

CVE: CVE-2025-21694