Out-of-bounds read in Linux kernel - CVE-2026-90416

Vulnerability identifier: #VU151063

CSH Severity: Low

CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-90416

CWE-ID: CWE-125

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in the get_param() function of the cc_params debugfs interface when reading a congestion parameter. A local user can read a crafted congestion parameter value through the debugfs interface to disclose sensitive information.

The issue is triggered when the parameter value has bit 31 set.

Linux kernel
Debian Linux
Ubuntu
linux-nvidia-tegra-igx (Ubuntu package)
linux-nvidia-tegra (Ubuntu package)
linux-nvidia-tegra-5.15 (Ubuntu package)
linux-azure-fde (Ubuntu package)
linux (Ubuntu package)
linux-oracle (Ubuntu package)
linux-gcp (Ubuntu package)
linux-aws (Ubuntu package)
linux-ibm (Ubuntu package)
linux-hwe-7.0 (Ubuntu package)
linux-oem-7.0 (Ubuntu package)
linux (Debian package)

Install security update from vendor's repository.

linux-nvidia-tegra-igx (Ubuntu package) - update to 5.15.0-1059.59
linux-nvidia-tegra (Ubuntu package) - update to 5.15.0-1070.72
linux-nvidia-tegra-5.15 (Ubuntu package) - update to 5.15.0-1070.72~20.04.1
linux-azure-fde (Ubuntu package) - update to 5.15.0-1124.133
linux (Ubuntu package) - update to 7.0.0-42.42
linux-oracle (Ubuntu package) - update to 7.0.0-1015.16
linux-gcp (Ubuntu package) - update to 7.0.0-1016.18
linux-aws (Ubuntu package) - update to 7.0.0-1016.17
linux-ibm (Ubuntu package) - update to 7.0.0-1017.17
linux-hwe-7.0 (Ubuntu package) - update to 7.0.0-42.42~24.04.1
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1017.17
linux (Debian package) - update to 6.12.111-1

• https://git.kernel.org/stable/c/03826bc1fa6c90405bf05831f2b501a8368dcd27
• https://git.kernel.org/stable/c/06b62758f81e27ca4c81201c22e3436c6d9ac894
• https://git.kernel.org/stable/c/0b0122fcc923a0271130f5fb71af2cd7e20434d9
• https://git.kernel.org/stable/c/1c5b4f76cd73372c5a8a4c91c95d5a31f141e091
• https://git.kernel.org/stable/c/4599311e78e88c893ad551aca622de2bfdf1c31f
• https://git.kernel.org/stable/c/c75ee076fa09778a2f9602a972dade4a0b0785f7
• https://git.kernel.org/stable/c/ce8dfd32a33b578c3abf178f67b4c8d36854f041
• https://git.kernel.org/stable/c/d809cf3f0ed9255abfc73c4730bcf187151422af

• Out-of-bounds read in Linux kernel hw mlx5 driver
• Debian update for linux
• Ubuntu update for linux-azure-fde
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more
• Ubuntu update for linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-nvidia-tegra-igx
• Ubuntu update for linux, linux-aws, linux-aws-5.15 and more