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CVE-2024-57986 is an input-validation flaw in the Linux kernel HID core's hid_apply_multiplier() handling of HID Resolution Multiplier controls. The function assumed that a Resolution Multiplier would be contained in a Logical Collection, although the HID specification permits a multiplier without a Logical Collection to apply to all controls in the report. When no applicable Logical Collection exists, the code could retain a non-NULL multiplier_collection pointer instead of setting it to NULL. The issue affects drivers/hid/hid-core.c and was introduced in Linux kernel 5.0.
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Linux kernel HID resolution-multiplier collection validation flaw.
Linux kernel HID core input-validation flaw.
A Linux kernel HID core flaw in Resolution Multiplier handling, where hid_apply_multiplier() incorrectly assumes a Logical Collection exists, contrary to HID specification behavior for controls with no Logical Collection.
An improper-input-validation vulnerability in the Linux kernel HID core affecting Resolution Multiplier handling. A malformed HID report descriptor without a Logical Collection can trigger the flawed assumption, with availability impact assessed as high (e.g., denial of service).
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