Access of Resource Using Incompatible Type ('Type Confusion') Affecting kernel-default package, versions <5.3.18-59.34.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.06% (25th percentile)

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  • Snyk IDSNYK-SLES153-KERNELDEFAULT-2655721
  • published14 Apr 2022
  • disclosed16 Nov 2021

Introduced: 16 Nov 2021

CVE-2021-34866  (opens in a new tab)
CWE-843  (opens in a new tab)

How to fix?

Upgrade SLES:15.3 kernel-default to version 5.3.18-59.34.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-default package and not the kernel-default package as distributed by SLES. See How to fix? for SLES:15.3 relevant fixed versions and status.

This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.14-rc3. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of eBPF programs. The issue results from the lack of proper validation of user-supplied eBPF programs, which can result in a type confusion condition. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel. Was ZDI-CAN-14689.

CVSS Scores

version 3.1