CVE-2023-1076
Vulnerability from cvelistv5
Published
2023-03-27 00:00
Modified
2024-08-02 05:32
Severity ?
Summary
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.
References
secalert@redhat.comhttps://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=66b2c338adce580dfce2199591e65e2bab889cffMailing List, Patch
secalert@redhat.comhttps://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=a096ccca6e503a5c575717ff8a36ace27510ab0aMailing List, Patch
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
Impacted products
n/aLinux kernel
Show details on NVD website

To clipboard 

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