Memory leak in Linux kernel - CVE-2025-21880

Vulnerability identifier: #VU106106

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-2025-21880

CWE-ID: CWE-401

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 memory leak within the xe_vm_userptr_pin() function in drivers/gpu/drm/xe/xe_vm.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-hwe-6.8 (Ubuntu package)
linux-azure-nvidia (Ubuntu package)
linux-azure (Ubuntu package)
linux-ibm (Ubuntu package)
linux-oracle (Ubuntu package)
linux-oracle-6.8 (Ubuntu package)
linux-aws-6.8 (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-raspi (Ubuntu package)
linux-raspi-realtime (Ubuntu package)
linux-realtime (Ubuntu package)
linux-realtime-6.8 (Ubuntu package)

Install update from vendor's website.

Linux kernel - update to 6.12.18
linux (Ubuntu package) - addressed in versions 6.8.0-84.84, 6.8.0-84.84.1, 6.8.0-84.84.1~22.04.1, 6.8.0-1023.25, 6.8.0-1036.40, 6.8.0-1039.41, 6.8.0-1040.42
linux-hwe-6.8 (Ubuntu package) - addressed in versions 6.8.0-84.84~22.04.1, 6.8.0-85.85~22.04.1
linux-azure-nvidia (Ubuntu package) - update to 6.8.0-1025.27
linux-azure (Ubuntu package) - addressed in versions 6.8.0-1036.42~22.04.1, 6.8.0-1038.44
linux-ibm (Ubuntu package) - addressed in versions 6.8.0-1037.37, 6.8.0-1037.37~22.04.1
linux-oracle (Ubuntu package) - update to 6.8.0-1037.38
linux-oracle-6.8 (Ubuntu package) - update to 6.8.0-1037.38~22.04.1
linux-aws-6.8 (Ubuntu package) - addressed in versions 6.8.0-1039.41~22.04.1, 6.8.0-1040.42~22.04.1
linux-nvidia (Ubuntu package) - addressed in versions 6.8.0-1039.42, 6.8.0-1039.42.1, 6.8.0-1039.42~22.04.1
linux-raspi (Ubuntu package) - update to 6.8.0-1039.43
linux-raspi-realtime (Ubuntu package) - update to 6.8.0-2031.32
linux-realtime (Ubuntu package) - update to 6.8.1-1034.35
linux-realtime-6.8 (Ubuntu package) - update to 6.8.1-1034.35~22.04.1

• https://git.kernel.org/stable/c/51cc278f8ffacd5f9dc7d13191b81b912829db59
• https://git.kernel.org/stable/c/a9f4fa3a7efa65615ff7db13023ac84516e99e21
• https://git.kernel.org/stable/c/daad16d0a538fa938e344fd83927bbcfcd8a66ec
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.18

• Memory leak in Linux kernel drm xe driver
• Ubuntu update for linux-nvidia
• Ubuntu update for linux
• Ubuntu update for linux-realtime
• Ubuntu update for linux-aws-6.8
• Ubuntu update for linux-realtime-6.8
• Ubuntu update for linux-ibm
• Ubuntu update for linux-hwe-6.8
• Ubuntu update for linux-raspi
• Ubuntu update for linux-hwe-6.8
• Ubuntu update for linux-raspi-realtime
• Ubuntu update for linux-azure
• Ubuntu update for linux-oracle
• Ubuntu update for linux-azure-nvidia
• Ubuntu update for linux-oracle-6.8