Access of Resource Using Incompatible Type ('Type Confusion') Affecting kernel-zfcpdump package, versions <5.14.21-150500.55.7.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (19th percentile)

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  • Snyk IDSNYK-SLES155-KERNELZFCPDUMP-5781773
  • published19 Jul 2023
  • disclosed18 Jul 2023

Introduced: 18 Jul 2023

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

How to fix?

Upgrade SLES:15.5 kernel-zfcpdump to version 5.14.21-150500.55.7.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-zfcpdump package and not the kernel-zfcpdump package as distributed by SLES. See How to fix? for SLES:15.5 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