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Security Advisories

CVE-2023-1076

Published

Last updated

NVD

https://nvd.nist.gov/vuln/detail/CVE-2023-1076

CGA ID

CGA-cqvw-mp4j-5vww

Severity

Unknown

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.

References

Affected packages


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