Type Confusion in Linux kernel - CVE-2026-31502
Published: April 24, 2026
Vulnerability identifier: #VU127648
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-2026-31502
CWE-ID: CWE-843
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 type confusion in team header_ops handling when processing header operations on non-Ethernet ports. A local user can trigger crafted network device interactions to cause a denial of service.
The issue can be triggered in stacked non-Ethernet topologies where inherited header callbacks are invoked with the wrong net_device context.
How to mitigate CVE-2026-31502
Install security update from vendor's repository.