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In the Linux kernel, the following vulnerability has been resolved:
ALSA: usb-audio: fix OOB write in snd_usbmidi_us122l_output()
The snd_usbmidi_us122l_output() picks a count of 2 on anything slower than high speed and never relates it to ep->max_transfer. The URB buffer holds exactly max_transfer bytes, so a device declaring a one byte bulk endpoint takes two bytes from snd_rawmidi_transmit(), and the memset that pads the rest computes 1 - 2 in int and wraps to SIZE_MAX.
Only 0x800e and 0x800f are pinned to nine bytes. The US-122MKII at 0x0644:0x8021 falls to the default and takes usb_maxpacket(), which the USB core only clamps downward.
The akai and novation output ops in this file were given the same guard recently. Do the same here.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux-6.12Upgrade linux | Sep 30, 2026 | Sep 16, 2026 |
| Redhat_linux | — | No solution exists | Oct 26, 2026 | Sep 16, 2026 |
| Ubuntu | — | Upgrade linuxUpgrade linux-hwe-7.0Upgrade linux-ibmUpgrade linux-realtimeUpgrade linux-awsUpgrade linux-bluefieldUpgrade linux-azureUpgrade linux-intel-iotg-5.15Upgrade linux-gcpUpgrade linux-intel-iot-realtimeUpgrade linux-lowlatency-hwe-5.15Upgrade linux-aws-fipsUpgrade linux-nvidia-tegra-igxUpgrade linux-gcp-fipsUpgrade linux-azure-5.15Upgrade linux-oracleUpgrade linux-aws-5.15Upgrade linux-azure-fde-5.15Upgrade linux-nvidia-tegra-5.15Upgrade linux-riscv-5.15Upgrade linux-oem-7.0Upgrade linux-gkeUpgrade linux-hwe-5.15Upgrade linux-nvidiaUpgrade linux-azure-fdeUpgrade linux-intel-iotgUpgrade linux-ibm-5.15Upgrade linux-riscvUpgrade linux-fipsUpgrade linux-oracle-5.15Upgrade linux-nvidia-tegraUpgrade linux-lowlatencyUpgrade linux-gkeopUpgrade linux-riscv-7.0Upgrade linux-gcp-5.15Upgrade linux-kvmUpgrade linux-azure-fips | Nov 3, 2026 | Sep 16, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 30, 2026 | Sep 16, 2026 |
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