Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - 已修复 Linux 内核中的下列漏洞：liveupdate: validate session type before performing operation The sessions ioctls are not applicable to all session types. PRESERVE_FD is only applicable to outgoing sessions. RETRIEVE_FD and FINISH are only valid for incoming session. Calling a incoming ioctl on an outgoing session is invalid and can cause file handlers to run into unexpected errors. For example, a user can create a (outgoing) session, preserve a memfd, and then immediately do a retrieve without doing a kexec in between. This would result in memfd's retrieve handler to run. The handlers expects to be called from a post-kexec context, and will try to do a kho_restore_vmalloc() or kho_restore_folio() to try and restore memory. KHO catches this (thanks to KHO_PAGE_MAGIC) and returns an error, but since this is considered an internal error and KHO throws out a bunch of WARN()s. Associate a type with each ioctl op and validate the type in luo_session_ioctl() before dispatching the ioctl handler to make sure the op is being called for the right session type. (CVE-2026-68455)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
365768	Ubuntu 26.04 LTS：Linux kernel (Azure) 漏洞 (USN-8888-1)	Nessus	Ubuntu Local Security Checks	2026/10/14	2026/10/14	medium
337733	Linux Distros 未修补的漏洞：CVE-2026-68455	Nessus	Misc.	2026/8/18	2026/10/10	medium
365463	Ubuntu 26.04 LTS：Linux 内核 (OEM) 漏洞 (USN-8889-1)	Nessus	Ubuntu Local Security Checks	2026/10/13	2026/10/13	medium
365767	Ubuntu 26.04 LTS：Linux 内核漏洞 (USN-8887-1)	Nessus	Ubuntu Local Security Checks	2026/10/14	2026/10/14	medium

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