Improper control of a resource through its lifetime in Linux kernel - CVE-2026-53232
Published: June 26, 2026
Vulnerability identifier: #VU135522
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-53232
CWE-ID: CWE-664
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper state management in the phy probing logic for the sfp upstream handling when probe failure paths are processed. A local user can trigger phy probing failure and subsequent SFP events to cause a denial of service.
The issue can leave a dangling upstream reference on the sfp-bus that may later be used during SFP events.
How to mitigate CVE-2026-53232
Install security update from vendor's repository.