Linux/Unix ホストには、ベンダーが提供するパッチが利用できない脆弱性の影響を受ける複数のパッケージがインストールされています。

  - Linux カーネルにおいて、以下の脆弱性は解決されました： nfsd: fix handling of cached open files in nfsd4_open codepath Commit fb70bf124b05 (NFSD: Instantiate a struct file when creating a regular NFSv4 file) added the ability to cache an open fd over a compound. There are a couple of problems with the way this currently works: It's racy, as a newly-created nfsd_file can end up with its PENDING bit cleared while the nf is hashed, and the nf_file pointer is still zeroed out. Other tasks can find it in this state and they expect to see a valid nf_file, and can oops if nf_file is NULL. Also, there is no guarantee that we'll end up creating a new nfsd_file if one is already in the hash. If an extant entry is in the hash with a valid nf_file, nfs4_get_vfs_file will clobber its nf_file pointer with the value of op_file and the old nf_file will leak. Fix both issues by making a new nfsd_file_acquirei_opened variant that takes an optional file pointer. If one is present when this is called, we'll take a new reference to it instead of trying to open the file. If the nfsd_file already has a valid nf_file, we'll just ignore the optional file and pass the nfsd_file back as-is. Also rework the tracepoints a bit to allow for an opened variant and don't try to avoid counting acquisitions in the case where we already have a cached open file. (CVE-2023-52909)

Nessus は、ベンダーによって報告されたパッケージの存在に依存していることに注意してください。

検出

Linux Distros のパッチ未適用の脆弱性: CVE-2023-52909

medium Nessus プラグイン ID 226581

バージョン 1.5

バージョン 1.3

バージョン 1.1

バージョン 1.5 Sep 17, 2025, 9:14 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202509170914
バージョン 1.3 Sep 3, 2025, 4:10 PM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Detection (updated detection logic) Plugin metadata Plugin Feed: 202509031610
バージョン 1.1 Mar 6, 2025, 7:23 AM New Plugin Feed: 202503060723