Improper resource shutdown or release in Linux kernel - CVE-2026-74626
Published: August 24, 2026
Vulnerability identifier: #VU144937
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-74626
CWE-ID: CWE-404
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper resource management in ntb_netdev_rx_handler() in the ntb_netdev driver when handling received packets and allocating replacement receive buffers. A remote attacker can send packets that trigger allocation failures and exhaust the receive queue to cause a denial of service.
The issue can stall packet reception while the network interface remains up.
Affected software
Linux kernel
Debian Linux
Ubuntu
linux-nvidia-tegra (Ubuntu package)
linux (Debian package)
Debian Linux
Ubuntu
linux-nvidia-tegra (Ubuntu package)
linux (Debian package)
How to mitigate CVE-2026-74626
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux-nvidia-tegra (Ubuntu package) - update to 6.8.0-1036.39+1
linux (Debian package) - update to 6.12.107-1
linux-nvidia-tegra (Ubuntu package) - update to 6.8.0-1036.39+1
linux (Debian package) - update to 6.12.107-1