Samba: vfs_worm does not block directory modification_CVE-2026-2340

6.5 / 10

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Description

A flaw was found in Samba’s vfs_worm module. The module is intended to provide write-once, read-many (WORM) protections by preventing modification of files after a configurable grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share could overwrite a protected file by renaming a newly created file over the existing WORM-protected file.

Basic Information

ID CVE-2026-2340

Source redhat

Published May 27, 2026 at 12:09

Modified May 27, 2026 at 13:22

Affected Product

Vendor Red Hat

Product Red Hat Enterprise Linux 10

CWE Classification

CWE-280

References

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    "published": "2026-05-27T12:09:32.601Z",
    "modified": "2026-05-27T13:22:15.957Z",
    "type": "cve",
    "title": "Samba: vfs_worm does not block directory modification",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-2340\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2447318\nhttps://bugzilla.samba.org/show_bug.cgi?id=15997",
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