Integer overflow in Linux kernel - CVE-2026-72483

Vulnerability identifier: #VU142958

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-72483

CWE-ID: CWE-190

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to corrupt kernel memory.

The vulnerability exists due to a shift-out-of-bounds error in max3421_hub_control() when handling a USBDEVFS_CONTROL ioctl for the root hub with a crafted wValue parameter. A local user can send a specially crafted ioctl request to corrupt kernel memory.

Exploitation requires access to the root hub device via /dev/bus/usb/.../001.

Linux kernel
Ubuntu
linux-nvidia (Ubuntu package)
linux-nvidia-tegra (Ubuntu package)
linux-gcp-7.0 (Ubuntu package)
linux (Ubuntu package)
linux-oem-7.0 (Ubuntu package)
linux-azure-7.0 (Ubuntu package)
linux-azure (Ubuntu package)

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux-nvidia (Ubuntu package) - addressed in versions 5.15.0-1112.113, 5.15.0.1112.112
linux-nvidia-tegra (Ubuntu package) - update to 6.8.0-1036.39+1
linux-gcp-7.0 (Ubuntu package) - addressed in versions 7.0.0-38.38~24.04.4, 7.0.0-1013.13~24.04.1, 7.0.0-1014.14~24.04.1
linux (Ubuntu package) - addressed in versions 7.0.0-38.38, 7.0.0-38.38.1, 7.0.0-1008.9, 7.0.0-1013.13~24.04.1, 7.0.0-1014.14, 7.0.0-1015.15
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1015.15
linux-azure-7.0 (Ubuntu package) - addressed in versions 7.0.0-1016.16~24.04.1, 7.0.0-1017.17~24.04.1
linux-azure (Ubuntu package) - addressed in versions 7.0.0-1016.16, 7.0.0-1017.17

• https://git.kernel.org/stable/c/00dd025324b56d39d37e57a08f473dab3a660f30
• https://git.kernel.org/stable/c/02d03c61e8a7b016956acb48e8a2512d16d87517
• https://git.kernel.org/stable/c/08b1d4cab0230697bc74c63fc4e40170a7559c54
• https://git.kernel.org/stable/c/3be5f24e8270ba53b3c814d13689bb8644c86237
• https://git.kernel.org/stable/c/4da073d57176d8e1c2bca34febfbc81d2560c1a5
• https://git.kernel.org/stable/c/cff06b03b530ae1fe8a13e93a7848f2130e00fb4
• https://git.kernel.org/stable/c/d512bdefd241b98f4d7bcb5bab5614a86411fad4
• https://git.kernel.org/stable/c/e5fa9d8f40746ec3447335c9642c03410f5fd3af

• Integer overflow in Linux kernel usb host driver
• Ubuntu update for linux-gcp-7.0
• Ubuntu update for linux-nvidia
• Ubuntu update for linux-azure-7.0
• Ubuntu update for linux-nvidia-tegra
• Ubuntu update for linux
• Ubuntu update for linux-azure
• Ubuntu update for linux-oem-7.0