Memory leak in Linux kernel - CVE-2026-45872

Vulnerability identifier: #VU132620

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-45872

CWE-ID: CWE-401

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to a memory leak in pqi_report_phys_luns() when handling unsupported data formats or allocation failures. A local user can trigger the vulnerable error paths to cause a denial of service.

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-hwe-6.8 (Ubuntu package)
linux-nvidia-tegra (Ubuntu package)
linux-aws-6.8 (Ubuntu package)
linux-raspi (Ubuntu package)
linux-azure-fde (Ubuntu package)
linux-azure-fde-6.8 (Ubuntu package)
linux-azure (Ubuntu package)
linux-raspi-realtime (Ubuntu package)

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux (Ubuntu package) - addressed in versions 6.8.0-134.134, 6.8.0-1057.58~22.04.1, 6.8.0-1058.61+fips1, 6.8.0-1058.61~22.04.1, 6.8.0-1060.61, 6.8.0-1060.63+fips1, 6.8.0-1060.63~22.04.1, 6.8.0-1063.69, 6.8.0-1063.69+fips1, 6.8.1-1055.56, 6.8.1-1055.56~22.04.1
linux-azure-fips (Ubuntu package) - addressed in versions 6.8.0-134.134+fips1, 6.8.0-1062.69+fips1
linux-hwe-6.8 (Ubuntu package) - update to 6.8.0-136.136~22.04.1
linux-nvidia-tegra (Ubuntu package) - update to 6.8.0-1029.30
linux-aws-6.8 (Ubuntu package) - addressed in versions 6.8.0-1045.48, 6.8.0-1057.58~22.04.1, 6.8.0-1058.61.1, 6.8.0-1058.64, 6.8.0-1060.61~22.04.1, 6.8.0-1060.63~22.04.1, 6.8.0-1063.69~22.04.1
linux-raspi (Ubuntu package) - update to 6.8.0-1060.64
linux-azure-fde (Ubuntu package) - update to 6.8.0-1062.69
linux-azure-fde-6.8 (Ubuntu package) - update to 6.8.0-1062.69~22.04.1
linux-azure (Ubuntu package) - addressed in versions 6.8.0-1063.71, 6.8.0-1063.71~22.04.1
linux-raspi-realtime (Ubuntu package) - update to 6.8.0-2049.50

• https://git.kernel.org/stable/c/41b37312bd9722af77ec7817ccf22d7a4880c289
• https://git.kernel.org/stable/c/454570434114e4862767f506a442a0f110b639b2
• https://git.kernel.org/stable/c/d52e13122d3771f753dd73ae6512fa01f58015cb
• https://git.kernel.org/stable/c/e5579ebaadc7b699868dad0f591a7bf83cd647e1
• https://git.kernel.org/stable/c/f471ecfec093e39ef8fd08978413793087daa14d
• https://git.kernel.org/stable/c/fdf1188cfa80f88c9f18d58cb33d57ff40e70e26

• Memory leak in Linux kernel scsi smartpqi driver
• Ubuntu update for linux
• Ubuntu update for linux-nvidia-tegra
• Ubuntu update for linux-aws-6.8
• Ubuntu update for linux-raspi-realtime
• Ubuntu update for linux-raspi
• Ubuntu update for linux-azure-fips
• Ubuntu update for linux-azure-fde-6.8
• Ubuntu update for linux-azure-fde
• Ubuntu update for linux-azure
• Ubuntu update for linux-hwe-6.8