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CVE-2026-80827: Linux

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: USB: serial: option: fix slab OOB read in interrupt URB callback The interrupt URB buffer is allocated in setup_port_interrupt_in() based on the endpoint's wMaxPacketSize: buffer_size = usb_endpoint_maxp(epd); port->interrupt_in_buffer = kmalloc(buffer_size, GFP_KERNEL); When a USB device declares wMaxPacketSize = 8 on its interrupt IN endpoint, the buffer is allocated from kmalloc-8 cache (exactly 8 bytes). If the device sends a short packet (actual_length < wMaxPacketSize), the URB completes with status == 0 and the callback proceeds to read: data[sizeof(struct usb_ctrlrequest)] which evaluates to data[8], accessing 1 byte beyond the allocated 8-byte buffer. This results in a slab out-of-bounds read. Fix this by adding the missing bounds check: first verify that the actual length is large enough to contain the struct usb_ctrlrequest header before accessing req_pkt->bRequestType and req_pkt->bRequest, and then verify that there is an additional byte for the modem signal state before reading data[sizeof(struct usb_ctrlrequest)] inside the conditional. Use sizeof(*req_pkt) instead of sizeof(struct usb_ctrlrequest) for consistency. [ johan: use dev_err(); split signals declaration and initialisation ]

    Засегнати продукти

    • Linux Linux: 58cfe9113e485f7e04bd0eac4fc4251b330af501 преди fbe60fd2abc8a5561f39719a41ad9a01b5d8e567; 58cfe9113e485f7e04bd0eac4fc4251b330af501 преди 94e5525697b9e91ddc4071129874120a50a4f342; 58cfe9113e485f7e04bd0eac4fc4251b330af501 преди 6b8cf5422c7e96ed5b22a8368eff663f3f98b8ec; 58cfe9113e485f7e04bd0eac4fc4251b330af501 преди 030e3a73d3c3aa67c44454649e984d6383cdb7d3; 58cfe9113e485f7e04bd0eac4fc4251b330af501 преди 060db7d48af1e650643c8b8319111a9ea2ce4486; 58cfe9113e485f7e04bd0eac4fc4251b330af501 преди 2ef5560387f2c0713cee975be2b24b281bd90f3e; 58cfe9113e485f7e04bd0eac4fc4251b330af501 преди a72a13c83a652516a0e469d275b81d29a7429049; 58cfe9113e485f7e04bd0eac4fc4251b330af501 преди d762aef4eba354066be21a5d88eb2066e282f4c9; 58cfe9113e485f7e04bd0eac4fc4251b330af501 преди 885d802f544ca7bfa8f3984d94233cce715bb6b3
    • Linux Linux: 2.6.12; преди 2.6.12; 5.10.269 до 5.10.*; 5.15.220 до 5.15.*; 6.1.187 до 6.1.*; 6.6.156 до 6.6.*; 6.12.108 до 6.12.*; 6.18.49 до 6.18.*; 7.1.13 до 7.1.*; 7.2.3 до 7.2.*; от 7.3 нататък

    История

    • 4 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-80827: Linux | freedomonline.bg