Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-98535

Vulnerability identifier: #VU156837

CSH Severity: Low

CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-98535

CWE-ID: CWE-772

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local privileged user to cause a clock reference leak that may contribute to resource exhaustion.

The vulnerability exists due to failure to release a clock reference in the read_dts_node() function of the Freescale FMan Ethernet driver when reading a clock rate during device-tree processing. A local privileged user can trigger the affected processing path to leave an incremented clock reference unreleased, potentially contributing to resource exhaustion.

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/5c90f99ba74b55ddd8e919224921033cc4077f01
• https://git.kernel.org/stable/c/874fd58b321a9238e47c2a46345444287f2a5781
• https://git.kernel.org/stable/c/9fd6d0861ae2fd44c771d6bc93b29bbc1202fe8e
• https://git.kernel.org/stable/c/a644f09b2090ad22a13fbcf9d141084f573108ef
• https://git.kernel.org/stable/c/c2a5e591858629b6c0e284010d2ccdbc22fd0a43
• https://git.kernel.org/stable/c/c2edf376d7804279878b207d93ffe6009c8d3d29
• https://git.kernel.org/stable/c/cb52f9f188c3174761ad3b37db9de751e002b52c
• https://git.kernel.org/stable/c/e560bdf62b11dcaa2a018345f76869d89ed43a9e

• Missing Release of Resource after Effective Lifetime in Linux kernel freescale fman 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