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CVE-2026-31412: Linux

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    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_mass_storage: Fix potential integer overflow in check_command_size_in_blocks() The `check_command_size_in_blocks()` function calculates the data size in bytes by left shifting `common->data_size_from_cmnd` by the block size (`common->curlun->blkbits`). However, it does not validate whether this shift operation will cause an integer overflow. Initially, the block size is set up in `fsg_lun_open()` , and the `common->data_size_from_cmnd` is set up in `do_scsi_command()`. During initialization, there is no integer overflow check for the interaction between two variables. So if a malicious USB host sends a SCSI READ or WRITE command requesting a large amount of data (`common->data_size_from_cmnd`), the left shift operation can wrap around. This results in a truncated data size, which can bypass boundary checks and potentially lead to memory corruption or out-of-bounds accesses. Fix this by using the check_shl_overflow() macro to safely perform the shift and catch any overflows.

    Засегнати продукти

    • Linux Linux: 144974e7f9e32b53b02f6c8632be45d8f43d6ab5 преди 91817ad5452defe69bc7bc0e355f0ed5d01125cc; 144974e7f9e32b53b02f6c8632be45d8f43d6ab5 преди ce0caaed5940162780c5c223b8ae54968a5f059b; 144974e7f9e32b53b02f6c8632be45d8f43d6ab5 преди 228b37936376143f4b60cc6828663f6eaceb81b5; 144974e7f9e32b53b02f6c8632be45d8f43d6ab5 преди 3428dc5520c811e66622b2f5fa43341bf9a1f8b3; 144974e7f9e32b53b02f6c8632be45d8f43d6ab5 преди 387ebb0453b99d71491419a5dc4ab4bee0cacbac; 144974e7f9e32b53b02f6c8632be45d8f43d6ab5 преди 8479891d1f04a8ce55366fe4ca361ccdb96f02e1
    • Linux Linux: 3.3; преди 3.3; 6.1.167 до 6.1.*; 6.6.130 до 6.6.*; 6.12.78 до 6.12.*; 6.18.19 до 6.18.*; 6.19.9 до 6.19.*; от 7.0 нататък

    История

    • 10 април 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-31412: Linux | freedomonline.bg