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CVE-2026-72151: Linux

8.4

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 локално, без особени условия, без вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: tpm: tpm2-sessions: wait for async KPP completion in tpm_buf_append_salt tpm_buf_append_salt() in drivers/char/tpm/tpm2-sessions.c calls crypto_kpp_generate_public_key() and crypto_kpp_compute_shared_secret() without installing a completion callback, discards both return values, and immediately frees the kpp_request via kpp_request_free(). When the resolved ecdh-nist-p256 KPP backend is asynchronous (atmel-ecc, HPRE, keembay-ocs), either operation returns -EINPROGRESS and the deferred completion worker dereferences the freed request. The path fires automatically from the hwrng_fillfn kernel thread via tpm_get_random -> tpm2_get_random -> tpm2_start_auth_session -> tpm_buf_append_salt on every entropy poll, without any userland action. Install crypto_req_done as the completion callback, wrap both KPP operations in crypto_wait_req(), and propagate errors to the caller. The wait is a no-op for synchronous backends.

    Засегнати продукти

    • Linux Linux: 1085b8276bb4239daa7008f0dcd5c973e4bd690f преди 111e520efbe82b324bc42b1999b723c0619eea6d; 1085b8276bb4239daa7008f0dcd5c973e4bd690f преди 934d1cd40e2893bf7a041b54f6afd1c008d7a21c; 1085b8276bb4239daa7008f0dcd5c973e4bd690f преди 493333f167926c7adab8e7563e21ad71d8af84fa; 1085b8276bb4239daa7008f0dcd5c973e4bd690f преди 73851a7c43dfa52d2ed9415889b33daf85da0ed9
    • Linux Linux: 6.10; преди 6.10; 6.12.97 до 6.12.*; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; 7.2 до *

    История

    • 15 август 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-72151: Linux | freedomonline.bg