Memory leak in Linux kernel - CVE-2026-90233

Vulnerability identifier: #VU151244

CSH Severity: Low

CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-90233

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 improper release of allocated resources in the NVMe PCI driver probe error path when a probe failure occurs after the admin tag set has been allocated. A local user can trigger a probe failure after the admin tag set is allocated to cause a denial of service.

The descriptor DMA pools are created per NUMA node.

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-oracle (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 (Ubuntu package) - update to 7.0.0-42.42
linux-aws (Ubuntu package) - update to 7.0.0-1016.17
linux-gcp (Ubuntu package) - update to 7.0.0-1016.18
linux-oracle (Ubuntu package) - update to 7.0.0-1015.16
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/79fb405966edb5065234440d94cc75bfd7b01f41
• https://git.kernel.org/stable/c/c25b6b28a35f9e36ce5dd6da5905bcddb2128707
• https://git.kernel.org/stable/c/cb144c2f67128abfa5c7ba33318617d19f192156

• Memory leak in Linux kernel nvme host driver
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more