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CVE-2026-64565: 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: Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data() The `ims_pcu_process_data()` processes incoming URB data byte by byte. However, it fails to check if the `read_pos` index exceeds IMS_PCU_BUF_SIZE. If a malicious USB device sends a packet larger than IMS_PCU_BUF_SIZE, `read_pos` will increment indefinitely. Moreover, since `read_pos` is located immediately after `read_buf`, the attacker can overwrite `read_pos` itself to arbitrarily control the index. This manipulated `read_pos` is subsequently used in `ims_pcu_handle_response()` to copy data into `cmd_buf`, leading to a heap buffer overflow. Specifically, an attacker can overwrite the `cmd_done.wait.head` located at offset 136 relative to `cmd_buf` in the `ims_pcu_handle_response()`. Consequently, when the driver calls `complete(&pcu->cmd_done)`, it triggers a control flow hijack by using the manipulated pointer. Fix this by adding a bounds check for `read_pos` before writing to `read_buf`. If the packet is too long, discard it, log a warning, and reset the parser state. [dtor: factor out resetting packet state, reset checksum as well]

    Засегнати продукти

    • Linux Linux: 628329d52474323938a03826941e166bc7c8eff4 преди 06cfff93fd40441292567b999091beab11c74504; 628329d52474323938a03826941e166bc7c8eff4 преди 992a7173364dcf63e30012af43da3c2f279839f9; 628329d52474323938a03826941e166bc7c8eff4 преди 3a801bc75ba1d121d0ed60e7234f93ba5651d87d; 628329d52474323938a03826941e166bc7c8eff4 преди 40bbbf2e91fd60715525bf0405c67876af817edf; 628329d52474323938a03826941e166bc7c8eff4 преди ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49; 628329d52474323938a03826941e166bc7c8eff4 преди d03a740e087de7dcb2a26dc1123377bd3d1d84ca; 628329d52474323938a03826941e166bc7c8eff4 преди 875115b82c295277b81b6dfee7debc725f44e854
    • Linux Linux: 3.10; преди 3.10; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.148 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; от 7.1 нататък

    История

    • 4 август 2026 Публикувано

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    CVE-2026-64565: Linux | freedomonline.bg