Access of Resource Using Incompatible Type ('Type Confusion') Affecting kernel-syms-azure package, versions <5.14.21-150400.14.40.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (20th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-SLES154-KERNELSYMSAZURE-5292005
  • published29 Mar 2023
  • disclosed28 Mar 2023

Introduced: 28 Mar 2023

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

How to fix?

Upgrade SLES:15.4 kernel-syms-azure to version 5.14.21-150400.14.40.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-syms-azure package and not the kernel-syms-azure package as distributed by SLES. See How to fix? for SLES:15.4 relevant fixed versions and status.

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.

CVSS Scores

version 3.1