Azure Linux 3.0 安全更新内核 (CVE-2024-40951)

medium Nessus 插件 ID 295118

语言：

简介

远程 Azure Linux 主机缺少一个或多个安全更新。

描述

远程 Azure Linux 3.0 主机上安装的内核版本低于测试的版本。因此，该程序受到 CVE-2024-40951 公告中提及的一个漏洞影响。

- 已修复 Linux 内核中的下列漏洞：ocfs2: fix NULL pointer dereference in ocfs2_abort_trigger() bdev->bd_super has been removed and commit 8887b94d9322 change the usage from bdev->bd_super to b_assoc_map->host->i_sb. Since ocfs2 hasn't set bh->b_assoc_map, it will trigger NULL pointer dereference when calling into ocfs2_abort_trigger(). Actually this was pointed out in history, see commit 74e364ad1b13. But I've made a mistake when reviewing commit 8887b94d9322 and then re-introduce this regression. Since we cannot revive bdev in buffer head, so fix this issue by initializing all types of ocfs2 triggers when fill super, and then get the specific ocfs2 trigger from ocfs2_caching_info when access journal. [[email protected]: v2] (CVE-2024-40951)

请注意，Nessus 尚未测试此问题，而是只依据应用程序自我报告的版本号进行判断。