CVE-2023-1076
5.5
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Exploitability: 1.8 / Impact: 3.6
Source: NVD
Description
A flaw was found in the Linux Kernel. The tun/tap sockets have their socket UID hardcoded to 0 due to a type confusion in their initialization function. While it will be often correct, as tuntap devices require CAP_NET_ADMIN, it may not always be the case, e.g., a non-root user only having that capability. This would make tun/tap sockets being incorrectly treated in filtering/routing decisions, possibly bypassing network filters.
Affected (1)
Products: Linux: Linux Kernel
Configuration A
| Vulnerable Software | Affected Versions |
|---|---|
| All versions |
Related CWEs
CWE-791
Incomplete Filtering of Special Elements
The product receives data from an upstream component, but does not completely filter special elements before sending it to a downstream component.
CWE-843
Access of Resource Using Incompatible Type ('Type Confusion')
The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.
References (6)
Source: secalert@redhat.com
Mailing ListPatch
Source: secalert@redhat.com
Mailing ListPatch
Source: secalert@redhat.com
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListPatch
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListPatch
Source: af854a3a-2127-422b-91ae-364da2661108
Timeline
No history available yet.