CVE-2026-23220
MediumCVSS 5.5Summary
W jądrze systemu Linux zidentyfikowano podatność, która prowadzi do nieskończonej pętli w przypadku błędnej weryfikacji podpisu żądania SMB2. Problem występuje, gdy funkcja __process_request() nieprawidłowo ustawia wskaźnik do następnego polecenia, co skutkuje ciągłym przetwarzaniem tego samego błędnego żądania.
Risk Assessment
Podatność ta może prowadzić do znacznego obciążenia CPU oraz zapełnienia logów jądra komunikatami o błędnym podpisie SMB2, co może wpłynąć na wydajność systemu i dostępność usług.
Recommendation
Zaleca się aktualizację jądra systemu Linux do wersji zawierającej poprawkę, która zmienia sposób obsługi błędnych żądań SMB2, aby uniknąć nieskończonego przetwarzania.
Related vulnerabilities
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- CVE-2026-124059Critical
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- CVE-2026-124057Critical
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- CVE-2026-122041Critical
The Checkout Field Editor for WooCommerce (Pro) plugin for WordPress up to and including 3.8.0 is vulnerable to unauthorized deletion of arbitrary attachments due to a missing capability/ownership check in the ajax_remove_uploaded() function. The handler is registered for both wp_ajax and wp_ajax_nopriv and gated solely by the 'file_handling_nonce' nonce, which is exposed in the public checkout page markup.
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The LatePoint plugin for WordPress is vulnerable to authentication bypass via account takeover in versions up to and including 5.7.6. OsModel::build_conditions_query() compares WHERE-clause values against literal strings 'IS NULL' and 'IS NOT NULL' and concatenates a match directly into SQL without binding, allowing unauthenticated attackers to send params[password_reset_token]=IS NOT NULL to the public customer_cabinet__change_password AJAX route and overwrite the lowest-id customer's password.
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The Naimur Email OTP Verification for WooCommerce plugin is vulnerable to authentication bypass in versions up to and including 2.1.0. The password-reset finalization endpoint authorizes the reset solely by the presence of a database row marking an email as 'VERIFIED', with no timestamp check, session binding, or per-reset token, and the scheduled cleanup cron has no handler so it never runs.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix infinite loop caused by next_smb2_rcv_hdr_off reset in error paths The problem occurs when a signed request fails smb2 signature verification check. In __process_request(), if check_sign_req() returns an error, set_smb2_rsp_status(work, STATUS_ACCESS_DENIED) is called. set_smb2_rsp_status() set work->next_smb2_rcv_hdr_off as zero. By resetting next_smb2_rcv_hdr_off to zero, the pointer to the next command in the chain is lost. Consequently, is_chained_smb2_message() continues to point to the same request header instead of advancing. If the header's NextCommand field is non-zero, the function returns true, causing __handle_ksmbd_work() to repeatedly process the same failed request in an infinite loop. This results in the kernel log being flooded with "bad smb2 signature" messages and high CPU usage. This patch fixes the issue by changing the return value from SERVER_HANDLER_CONTINUE to SERVER_HANDLER_ABORT. This ensures that the processing loop terminates immediately rather than attempting to continue from an invalidated offset.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

