Use of uninitialized resource in Linux kernel - CVE-2026-98898

Vulnerability identifier: #VU157616

CSH Severity: Low

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

CVE-ID: CVE-2026-98898

CWE-ID: CWE-908

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to potentially cause a denial of service.

The vulnerability exists due to use of an uninitialized resource in the Linux kernel AMD GPU power management component when processing interrupts that schedule thermal work. A local user can potentially trigger work scheduling on an uninitialized thermal work queue to cause a kernel crash and denial of service.

The vulnerable condition occurs when dynamic power management is disabled with the amdgpu.dpm=0 module parameter.

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/2750f52b58d92ca52a5496c00db8abf925103a27
• https://git.kernel.org/stable/c/2c08ae91df3cf11d517dc1273195f7b1df2a0ddb
• https://git.kernel.org/stable/c/52c4c623474df0e19efa158057966f2a149bda28
• https://git.kernel.org/stable/c/7987c5abdf537663b0957de521edefe77ae12842
• https://git.kernel.org/stable/c/8c9e7265b3379eb2ce1758b73c4ffa2606ae2256
• https://git.kernel.org/stable/c/ac0250da54afb519fab98478e2e1d9e51d4737fd
• https://git.kernel.org/stable/c/f8922d5a946699fc2bdc7660e6778bd6726bf8b8

• Use of uninitialized resource in Linux kernel pm legacy-dpm 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