CVE-2023-39191
Kernel: ebpf: insufficient stack type checks in dynptr
- State
- Published
- Severity
- 8.2 High
- Published
- Oct 4, 2023
- Updated
- Nov 6, 2025
- Reserved
- Jul 25, 2023
Description
An improper input validation flaw was found in the eBPF subsystem in the Linux kernel. The issue occurs due to a lack of proper validation of dynamic pointers within user-supplied eBPF programs prior to executing them. This may allow an attacker with CAP_BPF privileges to escalate privileges and execute arbitrary code in the context of the kernel.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.2 High | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H | redhat |
Weaknesses
- CWE-20 Improper Input Validation
Affected Products
| Product | Versions |
|---|---|
Red Hat Enterprise Linux 9Red Hat |
|
Red Hat Enterprise Linux 9Red Hat |
|
Red Hat Enterprise Linux 9.2 Extended Update SupportRed Hat |
|
Red Hat Enterprise Linux 9.2 Extended Update SupportRed Hat |
|
Red Hat Enterprise Linux 9.2 Extended Update SupportRed Hat | |
Red Hat Enterprise Linux 6Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat |
References
- RHSA-2023:6583vendor-advisory
- RHSA-2024:0381vendor-advisory
- RHSA-2024:0439vendor-advisory
- RHSA-2024:0448vendor-advisory
- https://access.redhat.com/security/cve/CVE-2023-39191vdb-entry
- RHBZ#2226783issue-tracking
- https://www.zerodayinitiative.com/advisories/ZDI-CAN-19399/
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