Race condition in Linux kernel - CVE-2026-64190
Published: July 21, 2026
Vulnerability identifier: #VU138904
CSH Severity: Low
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-64190
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to cause a denial of service.
The vulnerability exists due to a race condition leading to a NULL pointer dereference in team_xmit in the Linux kernel team driver when changing team device mode concurrently with transmit activity. A local privileged user can trigger a mode change while traffic is being transmitted on the team device to cause a denial of service.
Exploitation requires the ability to perform a mode change on the team device and concurrent transmit activity.
Affected software
Linux kernel
How to mitigate CVE-2026-64190
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3