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。

  - 已解決 Linux 核心中的下列弱點：9p: fix access mode flags being ORed instead of replaced Since commit 1f3e4142c0eb (9p: convert to the new mount API), v9fs_apply_options() applies parsed mount flags with |= onto flags already set by v9fs_session_init(). For 9P2000.L, session_init sets V9FS_ACCESS_CLIENT as the default, so when the user mounts with access=user, both bits end up set. Access mode checks compare against exact values, so having both bits set matches neither mode.
    This causes v9fs_fid_lookup() to fall through to the default switch case, using INVALID_UID (nobody/65534) instead of current_fsuid() for all fid lookups. Root is then unable to chown or perform other privileged operations. Fix by clearing the access mask before applying the user's choice. (CVE-2026-52906)

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Linux Distros 未修補弱點：CVE-2026-52906

high Nessus Plugin ID 320311

版本 1.8