Improper resource shutdown or release in Linux kernel - CVE-2026-43224
Published: May 7, 2026
Vulnerability identifier: #VU130505
CSH Severity: Low
CVSSv4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-43224
CWE-ID: CWE-404
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource shutdown or release in io_zcrx_map_area() when handling DMA mapping failures. A local user can trigger a mapping failure that leaves an initialized scatter-gather table unfreed to cause a denial of service.
This can occur only on PAGE_POOL_32BIT_ARCH_WITH_64BIT_DMA systems.
Remediation
Install security update from vendor's repository.