Vulnerability Description
This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.11.15. 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 prior to executing them. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel. Was ZDI-CAN-13661.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.7, < 5.10.37 |
| Netapp | Solidfire Baseboard Management Controller Firmware | - |
| Netapp | Solidfire Baseboard Management Controller | - |
| Netapp | Cloud Backup | - |
| 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 | - |
| Netapp | H300S Firmware | - |
| Netapp | H300S | - |
Related Weaknesses (CWE)
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=10PatchVendor Advisory
- https://security.netapp.com/advisory/ntap-20210706-0003/Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-503/Third Party AdvisoryVDB Entry
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=10PatchVendor Advisory
- https://security.netapp.com/advisory/ntap-20210706-0003/Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-503/Third Party AdvisoryVDB Entry
FAQ
What is CVE-2021-31440?
CVE-2021-31440 is a vulnerability with a CVSS score of 7.0 (HIGH). This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.11.15. An attacker must first obtain the ability to execute low-privileged code on the targ...
How severe is CVE-2021-31440?
CVE-2021-31440 has been rated HIGH with a CVSS base score of 7.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-31440?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Netapp Solidfire Baseboard Management Controller Firmware, Netapp Solidfire Baseboard Management Controller, Netapp Cloud Backup, Netapp H500S Firmware.