NULL pointer dereference in Linux kernel - CVE-2025-40247

Vulnerability identifier: #VU119177

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-2025-40247

CWE-ID: CWE-476

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the msm_iommu_pagetable_prealloc_allocate() and msm_iommu_pagetable_prealloc_cleanup() functions in drivers/gpu/drm/msm/msm_iommu.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-gcp-6.17 (Ubuntu package)
linux-realtime-6.17 (Ubuntu package)
linux-azure (Ubuntu package)
linux-raspi (Ubuntu package)
linux-oem-6.17 (Ubuntu package)

Install update from vendor's repository.

linux (Ubuntu package) - addressed in versions 6.17.0-19.19, 6.17.0-19.19~24.04.2, 6.17.0-1009.9, 6.17.0-1009.9~24.04.1, 6.17.0-1009.9~24.04.2
linux-gcp-6.17 (Ubuntu package) - addressed in versions 6.17.0-1008.9, 6.17.0-1009.9~24.04.3
linux-realtime-6.17 (Ubuntu package) - update to 6.17.0-1008.9~24.04.1
linux-azure (Ubuntu package) - addressed in versions 6.17.0-1010.10, 6.17.0-1010.10~24.04.1
linux-raspi (Ubuntu package) - update to 6.17.0-1010.10
linux-oem-6.17 (Ubuntu package) - update to 6.17.0-1017.17

• https://git.kernel.org/stable/c/830d68f2cb8ab6fb798bb9555016709a9e012af0
• https://git.kernel.org/stable/c/b865da18b6cb878f33b5920693d03f23b9c4d1a3

• NULL pointer dereference in Linux kernel drm msm driver
• Ubuntu update for linux
• Ubuntu update for linux-gcp-6.17
• Ubuntu update for linux-realtime-6.17
• Ubuntu update for linux-azure
• Ubuntu update for linux-raspi
• Ubuntu update for linux-oem-6.17