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CVE-2026-68083: Linux

9.1

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix path resolution in ksmbd_vfs_kern_path_create The SMB2 open lookup is rooted at the share with LOOKUP_BENEATH, but the create/mkdir/hardlink sink is not: ksmbd_vfs_kern_path_create() builds an absolute path with convert_to_unix_name() and resolves it from AT_FDCWD via start_creating_path(), so a ".." component is walked from the real filesystem root and escapes the export. An authenticated client races a missing path component so the rooted open lookup returns -ENOENT (taking the create branch) while the same component is present (a directory) when the create walk runs; the create then resolves ".." out of the share. Root the create walk at the share like the lookup and rename paths already are: resolve the parent with vfs_path_parent_lookup(..., LOOKUP_BENEATH, &share_conf->vfs_path) and create the final component with start_creating_noperm(). convert_to_unix_name() then has no callers and is removed.

    Засегнати продукти

    • Linux Linux: 265fd1991c1db85fbabaad4946ca0e63e2ae688d преди f1f53dc95edfb3d2072e5e8cd8eb9a2fe7d7f2d0; 265fd1991c1db85fbabaad4946ca0e63e2ae688d преди a2516be69048856e2a49a51e00975dc59431f95c; 265fd1991c1db85fbabaad4946ca0e63e2ae688d преди 489d1ded01425c0fb33418172c0e4e588467526b; 265fd1991c1db85fbabaad4946ca0e63e2ae688d преди c7c884a1305aa4540eb7942a50bd356b34120e1f; 265fd1991c1db85fbabaad4946ca0e63e2ae688d преди 98185b3025beeae92d1fe700d5db26b9ac4bf025; 265fd1991c1db85fbabaad4946ca0e63e2ae688d преди 1c8951963d8ed357f70f59e0ad4ddce2199d2016
    • Linux Linux: 5.15; преди 5.15; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.97 до 6.12.*; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; 7.2 до *

    История

    • 10 август 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-68083: Linux | freedomonline.bg