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VULNERABILITIES

CVE-2021-34866 Details

Description

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.

Metrics

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://security.netapp.com/advisory/ntap-20220217-0008/ CVEThird Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1148/ CVEThird Party AdvisoryVDB Entry
https://security.netapp.com/advisory/ntap-20220217-0008/ [email protected]Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1148/ [email protected]Third Party AdvisoryVDB Entry

Weakness Enumeration

CWE-IDCWE NameSource
CWE-843Access of Resource Using Incompatible Type ('Type Confusion')[email protected]
CWE-843Access of Resource Using Incompatible Type ('Type Confusion')[email protected]

Affected Products

ProductVersions

Change History

7 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-34866
NVD Published Date:
Jan 25, 2022
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]