Disclosure summary
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.
Source-reported weakness categories
CWE-843
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2021-34866
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| linux | linux_kernel | * {"versionStartIncluding":"5.11","versionEndExcluding":"5.13.14"} |
| netapp | h410c_firmware | - |
| netapp | h300s_firmware | - |
| netapp | h500s_firmware | - |
| netapp | h700s_firmware | - |
| netapp | h300e_firmware | - |
| netapp | h500e_firmware | - |
| netapp | h700e_firmware | - |
| netapp | h410s_firmware | - |
Original records & references
- NIST NVD record
- CVE Program record
- security.netapp.com — Third Party Advisory
- www.zerodayinitiative.com — Third Party Advisory, VDB Entry
- security.netapp.com — Third Party Advisory
- www.zerodayinitiative.com — Third Party Advisory, VDB Entry
PUBLISHED 2022-01-25T11:15:08-05:00
MODIFIED 2026-10-08T17:17:36-04:00
INGESTED 2026-10-10T20:50:21-04:00