Improper access control in Linux kernel - CVE-2026-52978
Published: June 25, 2026
Vulnerability identifier: #VU135398
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-52978
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote user to modify shared device state.
The vulnerability exists due to improper access control in the psp netlink dev-set and key-rotate operations when handling netlink requests. A remote user can send crafted netlink requests to modify shared device state.
The only access check verifies network namespace membership.
How to mitigate CVE-2026-52978
Install security update from vendor's repository.