CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: net: mana: Fix TOCTOU double-fetch of hwc_msg_id from DMA buffer In mana_hwc_rx_event_handler(), resp->response.hwc_msg_id is read from DMA-coherent memory and bounds-checked, then mana_hwc_handle_resp() re-reads the same field from the same DMA buffer for test_bit() and pointer arithmetic. DMA-coherent memory is mapped uncacheable on x86 and is shared, unencrypted, in Confidential VMs (SEV-SNP/TDX), so each load goes directly to host-visible memory. A H/W can modify the value between the check and the use, bypassing the bounds validation. Fix this by reading hwc_msg_id exactly once using READ_ONCE() into a stack-local variable in mana_hwc_rx_event_handler(), and passing the validated value as a parameter to mana_hwc_handle_resp().
Засегнати продукти
- Linux Linux: ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f преди a201c66edf2ebc6cfdc3813a889ba20fecebfae3; ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f преди 70ad2dff8d052a85dfef15715b531f38a29108cf; ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f преди 566f42fb67a7ebfed6650e407e5b72e6b3e83bf7; ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f преди 6180a06bbc99fd9114b8db4be6c4d46e40f046ef; ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f преди 09ec063d87c2dd3fa6f3561361a017bd882e9f37; ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f преди 3c4db56ccd13dd020fbf43afabaee74a40ec75e4; ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f преди 35f0f0a2536a4d604b4dbad92c85c4a8fdebb870
- Linux Linux: 5.13; преди 5.13; 5.15.209 до 5.15.*; 6.1.175 до 6.1.*; 6.6.142 до 6.6.*; 6.12.92 до 6.12.*; 6.18.34 до 6.18.*; 7.0.11 до 7.0.*; от 7.1 нататък
Вид слабост
История
- 19 юли 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-64034
- https://nvd.nist.gov/vuln/detail/CVE-2026-64034
- https://git.kernel.org/stable/c/a201c66edf2ebc6cfdc3813a889ba20fecebfae3
- https://git.kernel.org/stable/c/70ad2dff8d052a85dfef15715b531f38a29108cf
- https://git.kernel.org/stable/c/566f42fb67a7ebfed6650e407e5b72e6b3e83bf7
- https://git.kernel.org/stable/c/6180a06bbc99fd9114b8db4be6c4d46e40f046ef
- https://git.kernel.org/stable/c/09ec063d87c2dd3fa6f3561361a017bd882e9f37
- https://git.kernel.org/stable/c/3c4db56ccd13dd020fbf43afabaee74a40ec75e4
- https://git.kernel.org/stable/c/35f0f0a2536a4d604b4dbad92c85c4a8fdebb870