Improper access control in Linux kernel - CVE-2026-74467
Published: August 16, 2026
Vulnerability identifier: #VU143312
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-74467
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to invoke private ioctl commands.
The vulnerability exists due to improper access control in qeth_siocdevprivate when handling SIOCDEVPRIVATE ioctl commands. A local user can invoke private ioctl commands to invoke private ioctl commands.
The issue affects the SIOC_QETH_ADP_SET_SNMP_CONTROL, SIOC_QETH_GET_CARD_TYPE, and SIOC_QETH_QUERY_OAT commands.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-74467
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.105-1
linux (Debian package) - update to 6.12.105-1
External References
- https://git.kernel.org/stable/c/4e48168825818bf4a13c743582227d15f1d30d04
- https://git.kernel.org/stable/c/93a0a846ec59a88e0c402878a15357a5ce430eb4
- https://git.kernel.org/stable/c/b40c74262f7e1e601221cebccdbdb2b392ff9976
- https://git.kernel.org/stable/c/bd63c7879eaa87f1958f7ee027813356fcd9ff11
- https://git.kernel.org/stable/c/d211028bac1bd0fff0026bfa2a8328e5b78cd0e6