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Access of Resource Using Incompatible Type ('Type Confusion') The advisory has been revoked - it doesn't affect any version of package kernel-headers  (opens in a new tab)

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EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-RHEL6-KERNELHEADERS-3334909
  • published28 Feb 2023
  • disclosed4 Feb 2023
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Introduced: 4 Feb 2023

CVE-2023-1076  (opens in a new tab)
CWE-843  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:6.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-headers package and not the kernel-headers package as distributed by RHEL.

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.