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...

Nysm - A Stealth Post-Exploitation Container

A stealth post-exploitation container. Introduction With the raise in popularity of offensive tools based on eBPF, going from credential stealers to rootkits hiding their own PID, a question came to our mind: Would it be possible to make eBPFinvisible in its own eyes? From there, we created nysm,...

CVE-2021-3600

It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code...

CVE-2021-3600

It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code...

DEBIAN-CVE-2021-3600

It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code...

Out-of-bounds

It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code...

CVE-2021-3600

CVE-2021-3600 is reported in the provided documents as an eBPF bound-tracking issue in the Linux kernel: 32-bit source registers used in div/mod may cause bounds information to be mishandled, enabling a local attacker to possibly execute arbitrary code. The MiracleLinux AXSA-2021-2785:26/NASL lis...

CVE-2021-3600

It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code...

CVE-2021-3600

It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code...

CVE-2021-3600

It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code...

VED-eBPF - Kernel Exploit And Rootkit Detection Using eBPF

VED Vault Exploit Defense-eBPF leverages eBPF extended Berkeley Packet Filter to implement runtime kernel security monitoring and exploit detection for Linux systems. Introduction eBPF is an in-kernel virtual machine that allows code execution in the kernel without modifying the kernel source...

Unveiling eBPF: Harnessing Its Power to Solve Real-World Issues

Dive in a Kubernetes attack and see how eBPF and other security best practices can prevent these attacks...

SUSE SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2023:4414-1)

The remote SUSE Linux SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:4414-1 advisory. - Incorrect verifier pruning in BPF in Linux Kernel =5.4 leads to unsafe code paths being incorrectly marked as safe,...

kernel: bpf: Fix pointer-leak due to insufficient speculative store bypass mitigation

A vulnerability was found in the Linux kernel's eBPF verifier function checkstackwrite, where pointer leakage can occur due to insufficient speculative store bypass mitigation. This issue occurs because the original mitigation inserts lfence instructions after initializing a stack slot and spilli...

Important: Red Hat Security Advisory: kernel security, bug fix, and enhancement update

An update for kernel is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

SUSE SLED15 / SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2023:4375-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:4375-1 advisory. - Incorrect verifier pruning in BPF in Linux Kernel =5.4 leads to unsafe code paths being...

Important: kernel

Issue Overview: A flaw in the kernel Xen event handler can cause a deadlock with Xen console handling in unprivileged Xen guests. CVE-2023-34324 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...

mojoPortal File Upload Vulnerability

mojoPortal is a cross-platform object-oriented web framework . A file upload vulnerability exists in mojoPortal, which can be exploited by a remote attacker to submit a special request that can upload malicious files and execute arbitrary code in the context of the application...

Linux Kernel eBPF Local Elevation of Privilege Vulnerability

Linux Kernel is an open source operating system. A security vulnerability exists in the Linux Kernel eBPF processing, which can be exploited by a local attacker to submit a special request that can elevate privileges...

USN-6417-1 linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-bluefield, linux-gcp, linux-gcp-5.4, linux-gkeop, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-iot, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4, linux-xilinx-zynqmp vulnerabilities

It was discovered that the eBPF implementation in the Linux kernel contained a race condition around read-only maps. A privileged attacker could use this to modify read-only maps. CVE-2021-4001 It was discovered that the IPv6 implementation in the Linux kernel contained a high rate of hash...