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In the Linux kernel, the following vulnerability has been resolved:
usb: misc: usbio: check ibuf_len against rxbuf_len in bulk msg
ibuf_len is the bulk IN (receive) buffer size, but the EMSGSIZE check in usbio_bulk_msg() compares it against txbuf_len — the bulk OUT endpoint size. Both are taken independently from different endpoints in usbio_probe(), so the check is wrong when they differ.
Use rxbuf_len for the IN direction. This matches the buffer that actually holds the response data.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Ubuntu | — | Upgrade linuxUpgrade linux-gcpUpgrade linux-riscvUpgrade linux-awsUpgrade linux-oem-7.0Upgrade linux-riscv-7.0Upgrade linux-oracleUpgrade linux-hwe-7.0Upgrade linux-ibm | Nov 3, 2026 | Aug 22, 2026 |
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