Insufficient Comparison Affecting perf package, versions <0:4.18.0-372.91.1.el8_6
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Test your applications- Snyk ID SNYK-RHEL8-PERF-6234877
- published 8 Feb 2024
- disclosed 13 Oct 2021
Introduced: 13 Oct 2021
CVE-2021-34866 Open this link in a new tabHow to fix?
Upgrade RHEL:8 perf to version 0:4.18.0-372.91.1.el8_6 or higher.
This issue was patched in RHSA-2024:0724.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL.
See How to fix? for RHEL:8 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.