CVE-2023-39191

The CVE-2023-39191 issue affects the Linux kernel eBPF subsystem: improper validation of dynamic pointers in user-supplied eBPF programs can be exploited by a user with CAP_BPF privileges to escalate privileges and run code in kernel context. Multiple connected advisories (e.g., Red Hat RHSA entr...

CVE-2023-39191

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 CAPBPF privileges to escalate privileges and...

CVE-2023-39191 Kernel: ebpf: insufficient stack type checks in dynptr

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 CAPBPF privileges to escalate privileges and...

CVE-2023-39191 Kernel: ebpf: insufficient stack type checks in dynptr

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 CAPBPF privileges to escalate privileges and...

CVE-2023-39191

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 CAPBPF privileges to escalate privileges and...

CVE-2023-39191

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 CAPBPF privileges to escalate privileges and...

CVE-2023-39191: Improper Input Validation

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 CAPBPF privileges to escalate privileges and...

The vulnerability of the eBPF subsystem in Linux kernels allows attackers to enhance their privileges.

The vulnerability of the eBPF subsystem in Linux operating systems is related to errors in processing input data. Exploiting this vulnerability can allow attackers to enhance their privileges...

Linux Kernel eBPF Improper Input Validation Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of eBPF...

Unveiling eBPF: Revolutionizing Security and Observability

An Introduction to Extended BPF and Its Transformative Impact...

CVE-2023-41333

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An attacker with the ability to create or modify CiliumNetworkPolicy objects in a particular namespace is able to affect traffic on an entire Cilium cluster, potentially bypassing policy enforcement in othe...

CVE-2023-41332

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. In Cilium clusters where Cilium's Layer 7 proxy has been disabled, creating workloads with policy.cilium.io/proxy-visibility annotations in Cilium = v1.13 or io.cilium.proxy-visibility annotations in Cilium...

Design/Logic Flaw

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An attacker with the ability to create or modify CiliumNetworkPolicy objects in a particular namespace is able to affect traffic on an entire Cilium cluster, potentially bypassing policy enforcement in othe...

CVE-2023-39347

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An attacker with the ability to update pod labels can cause Cilium to apply incorrect network policies. This issue arises due to the fact that on pod update, Cilium incorrectly uses user-provided pod labels...

CVE-2023-41332 Denial of service via Kubernetes annotations in specific Cilium configurations

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. In Cilium clusters where Cilium's Layer 7 proxy has been disabled, creating workloads with policy.cilium.io/proxy-visibility annotations in Cilium = v1.13 or io.cilium.proxy-visibility annotations in Cilium...

CVE-2023-41332

CVE-2023-41332 affects Cilium’s eBPF dataplane. When the Layer 7 proxy is disabled, workloads annotated with policy.cilium.io/proxy-visibility (>= v1.13) or io.cilium.proxy-visibility (

CVE-2023-41333 Bypass of namespace restrictions in CiliumNetworkPolicy

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An attacker with the ability to create or modify CiliumNetworkPolicy objects in a particular namespace is able to affect traffic on an entire Cilium cluster, potentially bypassing policy enforcement in othe...

CVE-2023-41333 Bypass of namespace restrictions in CiliumNetworkPolicy

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An attacker with the ability to create or modify CiliumNetworkPolicy objects in a particular namespace is able to affect traffic on an entire Cilium cluster, potentially bypassing policy enforcement in othe...

CVE-2023-41333

Cilium is vulnerable: an attacker who can create/modify CiliumNetworkPolicy objects in a namespace can bypass namespace restrictions and affect traffic across the entire cluster by crafting an endpointSelector that uses the DoesNotExist operator on the reserved:init label. The issue requires API ...

CVE-2023-41333 Bypass of namespace restrictions in CiliumNetworkPolicy

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An attacker with the ability to create or modify CiliumNetworkPolicy objects in a particular namespace is able to affect traffic on an entire Cilium cluster, potentially bypassing policy enforcement in othe...