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
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2021-21513 | 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. |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Thu, 08 Oct 2026 22:30:00 +0000
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ssvc
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Projects
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Status: PUBLISHED
Assigner: zdi
Published:
Updated: 2026-10-08T21:03:25.520Z
Reserved: 2021-06-17T00:00:00.000Z
Link: CVE-2021-34866
Updated: 2024-08-04T00:26:54.201Z
Status : Modified
Published: 2022-01-25T16:15:08.450
Modified: 2026-10-08T21:17:36.293
Link: CVE-2021-34866
OpenCVE Enrichment
No data.
EUVD