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。

  - 在递归操作期间，uutils coreutils 的 chcon 实用工具中存在一个检查时间到使用时间 （TOCTOU） 漏洞。该实现使用新的路径查找（通过 fts_accpath）来解决递归目标，而不是将遍历和标签应用程序绑定到遍历期间遇到的特定目录状态。由于这些操作未锚定到文件描述符，具有目录树写入访问权限的本地攻击者可利用时序敏感重命名或符号链接争用，将特权递归重新标记操作重定向到非预期文件或目录。此漏洞打破了对 SELinux 管理工作流程的强化预期，并可导致对敏感系统对象上的安全标签进行未经授权的修改。（CVE-2026-35376）

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且供應商未提供可用的修補程式。

  - 遞迴作業期間，uutils coreutils 的 chcon 公用程式中存在 Time-of-Use （TOCTOU） 檢查時間弱點。此實作使用新的路徑查詢 （透過fts_accpath） 來解析遞迴目標，而不是將遊走和標籤應用程式繫結至遊走期間遇到的特定目錄狀態。由於這些作業未錨定至檔案描述元，因此具有目錄樹狀結構寫入權限的本機攻擊者可利用時間敏感的重新命名或符號連結爭用，將有權限的遞迴重新標記作業重新導向至非預期的檔案或目錄。此弱點破壞了 SELinux 管理工作流程的強化預期，並可能導致敏感系統物件上的安全性標籤遭到未經授權的修改。（CVE-2026-35376）

請注意，Nessus 的判定取決於廠商所報告的套件是否存在。

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。

  - 再帰的な操作中に、uutils coreutils の chcon ユーティリティに Time-of-Check to Time-of-Use(TOCTOU)の脆弱性が存在します。この実装では、トラバーサルおよびラベルアプリケーションをトラバーサル中に遭遇した特定のディレクトリ状態にバインドするのではなく、(fts_accpathによる)新しいパス検索を使用して再帰ターゲットを解決します。これらの操作はファイル記述子に固定されていないため、ディレクトリツリーへの書き込みアクセス権を持つローカルの攻撃者が、タイミングに依存する名前変更またはシンボリックリンク競合を悪用して、権限のある再帰的な再ラベル操作を意図しないファイルまたはディレクトリにリダイレクトする可能性があります。この脆弱性は、SELinux管理ワークフローに対する堅牢化の期待を破り、機密性の高いシステムオブジェクトのセキュリティラベルが不正に変更される可能性があります。(CVE-2026-35376)

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。

The remote Ubuntu 26.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-9041-1 advisory.

    It was discovered that uutils coreutils mkfifo incorrectly continued processing when a target file already     existed, applying default permissions to the existing file. A local attacker could possibly use this issue     to obtain sensitive information or modify file permissions unexpectedly. (CVE-2026-35341)

    It was discovered that uutils coreutils dd incorrectly suppressed errors during file truncation     operations. A local attacker could possibly use this issue to cause silent data corruption.
    (CVE-2026-35344)

    It was discovered that uutils coreutils tail incorrectly followed symbolic links when using the
    --follow=name option. A local attacker could possibly use this issue to obtain sensitive information.
    (CVE-2026-35345)

    It was discovered that uutils coreutils sort crashed when processing filenames containing non-UTF-8 bytes.
    A local attacker could possibly use this issue to cause a denial of service. (CVE-2026-35348)

    It was discovered that uutils coreutils cp incorrectly preserved setuid and setgid bits when ownership     changes failed. A local attacker could possibly use this issue to gain elevated privileges.
    (CVE-2026-35350)

    It was discovered that uutils coreutils mv failed to preserve file ownership when moving files across file     system boundaries. A local attacker could possibly use this issue to obtain sensitive information or cause     unintended access restrictions. (CVE-2026-35351)

    It was discovered that uutils coreutils mv had a time-of-check to time-of-use race condition in its     extended attribute preservation logic. A local attacker with write access to a directory could possibly     use this issue to modify security labels on unintended files. (CVE-2026-35354)

    It was discovered that uutils coreutils cp had a race condition in its file creation logic, initially     creating destination files with overly permissive modes. A local attacker could possibly use this issue to     obtain sensitive information. (CVE-2026-35357)

    It was discovered that uutils coreutils cp had a time-of-check to time-of-use race condition when handling     symbolic links. A local attacker with write access to a directory could possibly use this issue to obtain     sensitive information. (CVE-2026-35359)

    It was discovered that uutils coreutils touch had a time-of-check to time-of-use race condition during     file creation. A local attacker could possibly use this issue to cause data loss. (CVE-2026-35360)

    It was discovered that uutils coreutils rm failed to recognize trailing slashes on the current directory     path. A local attacker could possibly use this issue to cause data loss. (CVE-2026-35363)

    It was discovered that uutils coreutils mv had a time-of-check to time-of-use race condition during cross-     device operations. A local attacker with write access to a directory could possibly use this issue to     overwrite arbitrary files. (CVE-2026-35364)

    It was discovered that uutils coreutils nohup created its output file with world-readable permissions. A     local attacker could possibly use this issue to obtain sensitive information. (CVE-2026-35367)

    It was discovered that uutils coreutils chroot incorrectly resolved user specifications before dropping     root privileges, allowing Name Service Switch modules to be loaded from the new root directory. A local     attacker with write access to the chroot directory could possibly use this issue to execute arbitrary code     as root. (CVE-2026-35368)

    It was discovered that uutils coreutils ln failed to process filenames containing non-UTF-8 bytes, causing     the utility to exit with an error. A local attacker could possibly use this issue to cause a denial of     service. (CVE-2026-35373)

    It was discovered that uutils coreutils split had a time-of-check to time-of-use race condition in its     input and output file validation. A local attacker with write access to a directory could possibly use     this issue to cause data loss. (CVE-2026-35374)

    It was discovered that uutils coreutils chcon had a time-of-check to time-of-use race condition during     recursive relabeling operations. A local attacker with write access to a directory could possibly use this     issue to modify security labels on unintended files. (CVE-2026-35376)

    It was discovered that uutils coreutils env incorrectly handled backslash sequences within single quotes     when using the -S option. A local attacker could possibly use this issue to cause a denial of service.
    (CVE-2026-35377)

    It was discovered that uutils coreutils install applied setuid and setgid mode bits to destination files     before completing ownership changes. A local attacker could possibly use this issue to gain elevated     privileges. (CVE-2026-93658)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the chcon utility of uutils coreutils     during recursive operations. The implementation resolves recursive targets using a fresh path lookup (via     fts_accpath) rather than binding the traversal and label application to the specific directory state     encountered during traversal. Because these operations are not anchored to file descriptors, a local     attacker with write access to a directory tree can exploit timing-sensitive rename or symbolic link races     to redirect a privileged recursive relabeling operation to unintended files or directories. This     vulnerability breaks the hardening expectations for SELinux administration workflows and can lead to the     unauthorized modification of security labels on sensitive system objects. (CVE-2026-35376)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Published	Updated	Severity
309843	Linux Distros 未修补的漏洞：CVE-2026-35376	Nessus	Misc.	4/22/2026	11/13/2026	medium
309843	Linux Distros 未修補弱點：CVE-2026-35376	Nessus	Misc.	4/22/2026	11/13/2026	medium
309843	Linux Distros のパッチ未適用の脆弱性: CVE-2026-35376	Nessus	Misc.	4/22/2026	11/13/2026	medium
381352	Ubuntu 26.04 LTS : uutils coreutils vulnerabilities (USN-9041-1)	Nessus	Ubuntu Local Security Checks	11/14/2026	11/14/2026	high
309843	Linux Distros Unpatched Vulnerability : CVE-2026-35376	Nessus	Misc.	4/22/2026	11/13/2026	medium

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