CVE-2026-31412
kernel: usb: gadget: f_mass_storage: Fix potential integer overflow in check_command_size_in_blocks()
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Severity
UnknownRed Hat Product Security
CVSS
Review impact separately from score.
Published · April 10, 2026
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel's USB mass storage gadget module (usb-gadget-f_mass_storage). A remote attacker, acting as a malicious USB host, could send a specially crafted SCSI READ or WRITE command. This action could trigger an integer overflow during data size calculation, leading to an incorrect size. This issue may bypass boundary checks, potentially resulting in memory corruption or out-of-bounds memory access.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CWE-1335 · Incorrect Bitwise Shift of Integer