K32525759: Linux kernel vulnerability CVE-2021-3489

Security Advisory Description The eBPF RINGBUF bpfringbufreserve function in the Linux kernel did not check that the allocated size was smaller than the ringbuf size, allowing an attacker to perform out-of-bounds writes within the kernel and therefore, arbitrary code execution. This issue was fix...

K43346111: Linux kernel eBPF vulnerability CVE-2021-3490

Security Advisory Description The eBPF ALU32 bounds tracking for bitwise ops AND, OR and XOR in the Linux kernel did not properly update 32-bit bounds, which could be turned into out of bounds reads and writes in the Linux kernel and therefore, arbitrary code execution. This issue was fixed via...

K43232343: Linux kernel Vulnerability CVE-2021-31440

Security Advisory 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...

Important: Red Hat Security Advisory: Network observability 1.1.0 security update

Network observability 1.1.0 release for OpenShift 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 the CVE links in the...

SUSE CVE-2021-3490

The eBPF ALU32 bounds tracking for bitwise ops AND, OR and XOR in the Linux kernel did not properly update 32-bit bounds, which could be turned into out of bounds reads and writes in the Linux kernel and therefore, arbitrary code execution. This issue was fixed via commit 049c4e13714e "bpf: Fix...

SUSE 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...

SUSE CVE-2021-20268

An out-of-bounds access flaw was found in the Linux kernel's implementation of the eBPF code verifier in the way a user running the eBPF script calls devmapinitmap or sockmapalloc. This flaw allows a local user to crash the system or possibly escalate their privileges. The highest threat from thi...

SUSE CVE-2021-20320

A flaw was found in s390 eBPF JIT in bpfjitinsn in arch/s390/net/bpfjitcomp.c in the Linux kernel. In this flaw, a local attacker with special user privilege can circumvent the verifier and may lead to a confidentiality problem...

SUSE CVE-2021-31440

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...

SUSE CVE-2021-34866

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 o...

SUSE CVE-2021-41864

preallocelemsandfreelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write...

CVE-2022-3534

A use-after-free flaw was found in btfdumpnamedups in tools/lib/bpf/btfdump.c in libbpf in the Linux Kernel. This issue occurs because the key stored in the hash table namemap is a string address, and the string memory is allocated by realloc function. When the memory is resized by realloc later,...

KRIe - Linux Kernel Runtime Integrity With eBPF

KRIe is a research project that aims to detect Linux Kernel exploits with eBPF. KRIe is far from being a bulletproof strategy: from eBPF related limitations to post exploitation detections that might rely on a compromised kernel to emit security events, it is clear that a motivated attacker will...

Ubuntu 16.04 ESM / 18.04 LTS : Linux kernel vulnerabilities (USN-5790-1)

The remote Ubuntu 16.04 ESM / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5790-1 advisory. It was discovered that the BPF verifier in the Linux kernel did not properly handle internal data structures. A local attacker could use this...

ROS-20221220-01

A vulnerability in the ath9khtcwaitfortarget function of the Atheros wireless adapter driver of the kernel of the operating system Linux kernel is associated with a post-release usage error. Exploitation of the vulnerability could allow an attacker to access kernel memory by typing a specially...

TripleCross - A Linux eBPF Rootkit With A Backdoor, C2, Library Injection, Execution Hijacking, Persistence And Stealth Capabilities.

TripleCross is a Linux eBPF rootkit that demonstrates the offensive capabilities of the eBPF technology. TripleCross is inspired by previous implant designs in this area, notably the works of Jeff Dileo at DEFCON 271, Pat Hogan at DEFCON 292, Guillaume Fournier and Sylvain Afchain also at DEFCON...

kernel: BPF: Fix potential bad pointer dereference in bpf_sys_bpf()

In the Linux kernel, the following vulnerability has been resolved: BPF: Fix potential bad pointer dereference in bpfsysbpf The bpfsysbpf helper function allows an eBPF program to load another eBPF program from within the kernel. In this case the argument union bpfattr pointer as well as the insn...

PT-2025-25995 · Linux +2 · Linux Kernel +2

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 5.19.0-rc7 Description: A potential bad pointer dereference issue exists in the bpf sys bpf helper function, which allows an eBPF program to load another eBPF program from within the kernel. The issue arises whe...

Ubuntu 20.04 LTS : Linux kernel (Azure CVM) vulnerabilities (USN-5706-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5706-1 advisory. It was discovered that the BPF verifier in the Linux kernel did not properly handle internal data structures. A local attacker could use this to expose...

Ubuntu 18.04 LTS : Linux kernel (AWS) vulnerabilities (USN-5682-1)

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5682-1 advisory. It was discovered that the BPF verifier in the Linux kernel did not properly handle internal data structures. A local attacker could use this to expose...