Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-98909

Vulnerability identifier: #VU157593

CSH Severity: Low

CVSS v4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-98909

CWE-ID: CWE-772

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local privileged user to potentially cause a denial of service through unreleased kernel resources.

The vulnerability exists due to missing resource cleanup in the Linux kernel CPSW Ethernet driver's cpsw_probe() function when port registration fails after successful devlink registration. A local privileged user can potentially exploit this failure path to leave a devlink instance and its parameters registered after underlying resources have been released, which may disrupt system operation.

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

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux-nvidia-tegra (Ubuntu package) - update to 5.15.0-1070.72
linux-nvidia-tegra-igx (Ubuntu package) - update to 5.15.0-1059.59
linux-nvidia-tegra-5.15 (Ubuntu package) - update to 5.15.0-1070.72~20.04.1
linux (Ubuntu package) - update to 7.0.0-42.42
linux-gcp (Ubuntu package) - update to 7.0.0-1016.18
linux-oracle (Ubuntu package) - update to 7.0.0-1015.16
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

• https://git.kernel.org/stable/c/0a44945b0d3422f5d81b49c97e293f3e21a8c585
• https://git.kernel.org/stable/c/2bcf21ede6b097ca96cb1f7679761acca6510555
• https://git.kernel.org/stable/c/43d4af5c5331ea739a49cb1097d41e502ed91ec4
• https://git.kernel.org/stable/c/5a5ac0defdd42e566f1c871272370b6a3a8eef5c
• https://git.kernel.org/stable/c/8af61d5bd87fd1a3bdc81fe948e7acdc8aa5bcf0
• https://git.kernel.org/stable/c/b020390b4ef39adc40c800301042baf812280da1
• https://git.kernel.org/stable/c/b64f763b607426ac97e44b114f0b8844ac3b86dd

• Missing Release of Resource after Effective Lifetime in Linux kernel ethernet ti driver
• 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