Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.8, < 5.10.62 |
| Netapp | H410C Firmware | - |
| Netapp | H410C | - |
| Netapp | H300S Firmware | - |
| Netapp | H300S | - |
| Netapp | H500S Firmware | - |
| Netapp | H500S | - |
| Netapp | H700S Firmware | - |
| Netapp | H700S | - |
| Netapp | H300E Firmware | - |
| Netapp | H300E | - |
| Netapp | H500E Firmware | - |
| Netapp | H500E | - |
| Netapp | H700E Firmware | - |
| Netapp | H700E | - |
| Netapp | H410S Firmware | - |
| Netapp | H410S | - |
Related Weaknesses (CWE)
References
- https://security.netapp.com/advisory/ntap-20220217-0008/Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1148/Third Party AdvisoryVDB Entry
- https://security.netapp.com/advisory/ntap-20220217-0008/Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1148/Third Party AdvisoryVDB Entry
FAQ
What is CVE-2021-34866?
CVE-2021-34866 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 tar...
How severe is CVE-2021-34866?
CVE-2021-34866 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-34866?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Netapp H410C Firmware, Netapp H410C, Netapp H300S Firmware, Netapp H300S.