Search: “windows-kernel”

USN-8728-1: Linux kernel (GCP) vulnerabilities

Ubuntu issued kernel security update USN-8728-1 for GCP kernels fixing Arm TLB and AMD Zen 2 privilege escalation flaws (CVE-2025-10263, CVE-2025-54518).

Ubuntu released USN-8728-1, a security update for the Linux kernel used on Google Cloud Platform images. It fixes CVE-2025-10263, where certain Arm processors complete broadcast TLB invalidation before memory writes are globally observed, allowing local attackers to bypass memory protections or escalate privileges, and CVE-2025-54518, an AMD Zen 2 operation cache isolation flaw that can corrupt higher-privilege instructions. The notice also corrects several other kernel security issues.

Ubuntu Security Notices·Sep 7, 09:05 UTC · 9d agoAdvisory 6 sourcesCVE-2025-10263CVE-2025-54518

USN-8730-2: Linux kernel (Azure) vulnerability

Ubuntu fixes a Linux kernel (Azure) vulnerability in the IPv6 networking and Netfilter subsystems.

Ubuntu security notice USN-8730-2 corrects a security issue in the Linux kernel Azure flavor affecting the IPv6 networking and Netfilter subsystems. An attacker could possibly use the flaw to compromise the system.

Ubuntu Security Notices·Sep 15, 09:41 UTC · 1d agoAdvisory 2 sources

DeepZero: Open-source hunting for vulnerable Windows drivers

DeepZero, a new open-source engine, automates discovery of exploitable Windows kernel drivers for BYOVD attacks using Ghidra, Semgrep, and an LLM.

DeepZero is a free, open-source Python pipeline orchestrator that automates hunting for exploitable Windows kernel drivers relevant to BYOVD (bring your own vulnerable driver) attacks. Its seven-stage YAML pipeline parses PE headers, filters for kernel-mode drivers with IOCTL surfaces, excludes drivers listed on loldrivers.io, then runs headless Ghidra decompilation, Semgrep scanning, and an LLM-based exploitability assessment. The maintainer reports multiple verified vulnerabilities in the Snappy Driver Installer corpus, some still in the disclosure process, and notes findings involving plug-and-play-created device objects may need physical hardware to confirm.

Help Net Security·05:30 UTC · 11h agoTools

Re: Linux kernel LPEs: ZcopyReaper (CVE-2026-43502) and 20 more

oss-security thread discusses newly disclosed Linux kernel local privilege escalations, including ZcopyReaper (CVE-2026-43502) and about 20 more flaws.

An oss-security mailing list thread discusses newly disclosed Linux kernel local privilege escalation (LPE) issues, headlined by ZcopyReaper (CVE-2026-43502) along with roughly 20 more. Discussants ask whether the many reports could be summarized and note that locking kernel module loading after boot has repeatedly proven an effective mitigation. The visible discussion does not state whether any of the flaws are exploited in the wild or give specific patch guidance beyond the individual reports.

oss-security·Sep 8, 17:02 UTC · 8d agoVulnerabilityCVE-2026-43502

New OVSwrap Linux Kernel Flaw Lets Local Users Gain Root via Open vSwitch

The Hacker News·Aug 5, 11:43 UTC · Aug 5, 2026Exploit / PoCCVE-2026-64531

Linux kernel LPEs: ZcopyReaper (CVE-2026-43502) and 20 more

Researchers disclosed CVE-2026-43502 (ZcopyReaper), a Linux kernel local privilege escalation in the RDS zerocopy send path, fixed in v7.1-rc3.

Yuan Tan reported a Linux kernel local privilege escalation in the RDS zerocopy send path, tracked as CVE-2026-43502 and dubbed ZcopyReaper, posted to oss-security. The flaw was introduced in Linux v4.17 and fixed by commit 44b550d88b26, first appearing in mainline v7.1-rc3. The researchers demonstrated local privilege escalation on an openSUSE system running kernel 6.4.0-150600.23.100. The post also references 20 additional Linux kernel LPEs, though CVE ids were not provided in the excerpt.

oss-security·Sep 8, 03:53 UTC · 8d agoVulnerabilityCVE-2026-43502

ZDI-26-608: Linux Kernel KVM IOAPIC Use-After-Free Local Privilege Escalation Vulnerability

The Linux kernel KVM IOAPIC has a use-after-free (CVSS 8.2) allowing local privilege escalation, but exploitation requires high-privileged code execution first.

ZDI-26-608 describes a use-after-free vulnerability in the Linux kernel's KVM IOAPIC component, with a CVSS score of 8.2. An attacker must first obtain the ability to execute high-privileged code on the target system, which limits the practical impact of the privilege escalation. The advisory text does not list an assigned CVE identifier.

ZDI Published Advisories·Aug 24, 05:00 UTC · 23d agoVulnerability

Re: Linux kernel LPEs: ZcopyReaper (CVE-2026-43502) and 20 more

Linux kernel developers discuss a batch of 21 local privilege escalation CVEs, including ZcopyReaper (CVE-2026-43502) in the RDS networking driver.

An oss-security thread examines newly published Linux kernel local privilege escalation issues tracked in the kernel.org security vulnerabilities git repository. CVE-2026-43502, dubbed ZcopyReaper, affects the net/rds (Reliable Datagram Sockets) subsystem. The discussion references roughly 20 additional kernel LPE CVEs published in the 2026 Q3 window.

oss-security·Sep 8, 21:32 UTC · 7d agoVulnerabilityCVE-2026-43502

Heap overflow in kernel driver due to missing size validation

Fortinet fixes a CVSS 7.3 heap overflow in the FortiClient Windows kernel driver enabling code execution via crafted DNS responses.

Fortinet PSIRT advisory FG-IR-26-156, revised 2026-08-12, describes a heap-based buffer overflow (CWE-120, buffer copy without checking input size) in the FortiClient Windows kernel driver, scored CVSSv3 7.3. An unauthenticated attacker positioned to alter or craft DNS responses for a targeted host could execute arbitrary code via malicious packets. No CVE identifier or exploitation status is provided in the advisory text, so administrators should check the full bulletin for affected versions and fixed releases.

Fortinet PSIRT·Aug 12, 07:00 UTC · Aug 12, 2026Advisory

Introducing @huggingface/kernels: 200+ WebGPU Kernels for Local AI

Hugging Face released @huggingface/kernels, a library offering 200+ WebGPU compute kernels to accelerate AI inference locally in browsers.

Hugging Face introduced the @huggingface/kernels package, bundling more than 200 optimized WebGPU compute kernels for running AI workloads locally. The release targets browser-based and on-device inference, reducing reliance on server-side compute. No article body was available beyond the title, so benchmark results and supported models are not specified.

Hugging Face Blog·Sep 1, 00:00 UTC · 15d agoAI tools & infra

USN-8760-1: Linux kernel (NVIDIA) vulnerabilities

Canonical issues USN-8760-1 patching multiple Linux kernel (NVIDIA) vulnerabilities across numerous subsystems and CPU architectures.

Canonical published USN-8760-1 to correct several Linux kernel (NVIDIA) vulnerabilities that an attacker could possibly use to compromise the system. The update fixes flaws spanning UAPI, the kernel build system, ARM32, ARM64, RISC-V, S390, and x86 architectures. Patched subsystems also include the block layer, cryptographic API, Compute Acceleration Framework, Intel NPU driver, ACPI and Bluetooth drivers, and the hardware random number generator core.

Ubuntu Security Notices·Sep 15, 09:15 UTC · 1d agoAdvisory

USN-8748-1: Linux kernel (NVIDIA) vulnerabilities

Ubuntu released USN-8748-1 patching multiple Linux kernel (NVIDIA) vulnerabilities across networking, file system, and crypto subsystems.

Ubuntu issued security notice USN-8748-1 fixing several Linux kernel vulnerabilities affecting the NVIDIA Tegra memory controller driver, hardware crypto device drivers, and network drivers, among others. Affected subsystems include GFS2, OCFS2, and SMB file systems, B.A.T.M.A.N. meshing, Ceph, Netfilter, Open vSwitch, IPv4/IPv6, RxRPC, SCTP, and TIPC. An attacker could potentially exploit these flaws to compromise the system.

Ubuntu Security Notices·Sep 10, 15:32 UTC · 6d agoAdvisoryCVE-2026-52914CVE-2026-52931CVE-2026-52955+8 CVEs

Mustang Panda Upgrades CoolClient With a Kernel Rootkit

Mustang Panda's updated CoolClient backdoor deploys a signed kernel driver to hide processes, files and network activity in Asian intrusions.

Kaspersky analysis shows Mustang Panda (HoneyMyte) upgraded its CoolClient espionage backdoor with a signed kernel-mode driver installed as a Windows service, communicating via IOCTL requests to hide processes, files and registry entries. In a Myanmar campaign the actor deployed PlugX first, then CoolClient via a fake Windows Defender directory and Sangfor defender.exe DLL sideloading, with scheduled task and AutoRun persistence and UAC bypass. The updated variant was observed in intrusions across Pakistan, Mongolia and Myanmar, with victims also in Russia including confirmed government entities.

Security Affairs·Aug 16, 17:18 UTC · Aug 16, 2026Threat actor in the wild1

BTR Reforged: Weaponizing Defender’s Remediation Driver as a Kernel Operation Primitive

Check Point shows attackers can abuse Microsoft Defender's signed remediation driver for arbitrary Ring 0 file and registry operations without exploiting any vulnerability.

Check Point Research presents BTR Reforged, a technique that repurposes Microsoft Defender's trusted remediation driver into an attacker-controlled kernel operation primitive. The signed driver can be instructed to execute arbitrary file and registry operations from Ring 0 without exploits, vulnerabilities, or memory corruption. The work demonstrates how trusted security components can be turned into attacker primitives, which is relevant for defenders assessing driver abuse risks.

Check Point Research·Aug 20, 13:07 UTC · 27d agoResearch

ZDI-26-696: Linux Kernel NTFS3 Journal Heap-based Buffer Overflow Code Execution Vulnerability

ZDI-26-696: Linux Kernel NTFS3 journal heap-based buffer overflow (CVE-2026-72196, CVSS 8.8) enables local arbitrary code execution.

ZDI advisory ZDI-26-696 describes a heap-based buffer overflow in the Linux Kernel NTFS3 journal handling, tracked as CVE-2026-72196 with a CVSS score of 8.8. Exploitation requires the attacker to first execute low-privileged code on the target system. Successful exploitation allows local attackers to execute arbitrary code. No in-the-wild exploitation is mentioned.

ZDI Published Advisories·Sep 14, 05:00 UTC · 2d agoVulnerabilityCVE-2026-721961

ZDI-26-702: Linux Kernel usbnet Driver Race Condition Privilege Escalation Vulnerability

ZDI discloses Linux Kernel usbnet driver race condition (CVE-2025-22050) enabling physically present attackers to escalate privileges without authentication.

ZDI-26-702 covers a race condition privilege escalation vulnerability in the Linux Kernel usbnet driver, assigned CVE-2025-22050 with a CVSS rating of 7.1. A physically present attacker can escalate privileges on affected installations. Authentication is not required to exploit the vulnerability.

ZDI Published Advisories·Sep 14, 05:00 UTC · 2d agoVulnerabilityCVE-2025-22050

ZDI-26-541: (Pwn2Own) Microsoft Windows win32kfull Use-After-Free Local Privilege Escalation Vulnerability

ZDI discloses a Pwn2Own Windows win32kfull use-after-free local privilege escalation flaw (CVE-2026-65775, CVSS 8.8) requiring existing low-privileged code execution.

ZDI advisory ZDI-26-541 describes a use-after-free in Microsoft Windows win32kfull that allows local attackers to escalate privileges. Exploitation requires the attacker to first execute low-privileged code on the target system. The flaw carries a CVSS score of 8.8 and is assigned CVE-2026-65775; it was demonstrated at Pwn2Own.

ZDI Published Advisories·Aug 11, 05:00 UTC · Aug 11, 2026VulnerabilityCVE-2026-657751

MathKernel: An evidence-aware multi-engine mathematics kernel and MCP server

MathKernel is an open-source, evidence-aware multi-engine mathematics kernel that exposes verification workflows to AI agents via an MCP server.

MathKernel, published on GitHub, is a mathematics kernel that combines multiple computation engines with evidence-aware outputs. It ships as an MCP server, enabling AI agents and coding assistants to perform and verify calculations. The project drew moderate attention on Hacker News.

Hacker News · security·Sep 7, 00:21 UTC · 9d agoAI tools & infraHN 36↑ · 5 comments

ZDI-26-609: Linux Kernel Net Scheduler Packet Classifier Use-After-Free Local Privilege Escalation Vulnerability

The Linux kernel net scheduler packet classifier has a use-after-free (CVSS 7.8) allowing local attackers to escalate privileges from low-privileged code.

ZDI-26-609 describes a use-after-free vulnerability in the Linux kernel's network scheduler packet classifier, with a CVSS score of 7.8. An attacker must first be able to execute low-privileged code on the target system before escalating privileges. The advisory text does not list an assigned CVE identifier.

ZDI Published Advisories·Aug 24, 05:00 UTC · 23d agoVulnerability

Linux Kernel ZcopyReaper Vulnerability Lets Local Attackers Gain Root Privileges

Linux kernel RDS zero-copy flaw CVE-2026-43502 (ZcopyReaper) lets unprivileged local users gain root; fix in 7.1-rc3, public PoC published.

CVE-2026-43502, dubbed ZcopyReaper, is a Linux kernel local privilege escalation flaw in the RDS zerocopy send path, present since kernel 4.17, allowing unprivileged local attackers to gain root. NebuSec researcher Yuan Tan demonstrated root escalation on openSUSE kernel 6.4.0-150600.23.100; the fix landed in commit 44b550d88b26 with Linux 7.1-rc3 the first patched mainline release. Exploitation requires CONFIG_RDS and CONFIG_RDS_TCP but not unprivileged user namespaces, and PoC exploit material is publicly released alongside more than 20 other exploitable 2026 kernel CVEs.

GBHackers·Sep 15, 08:18 UTC · 1d agoExploit / PoCCVE-2026-43502CVE-2026-43501CVE-2026-43074+4 CVEs1

ZDI-26-692: Linux Kernel eMPIA USB Device Driver Race Condition Code Execution Vulnerability

ZDI-26-692: race condition in Linux kernel eMPIA USB driver (CVE-2026-31583) lets physically present attackers execute code without authentication; CVSS 7.1.

ZDI advisory ZDI-26-692 discloses a race condition in the Linux kernel's eMPIA USB device driver that allows physically present attackers to execute arbitrary code on affected installations. Authentication is not required, but physical access to the target system is necessary. ZDI assigned a CVSS rating of 7.1 and CVE-2026-31583.

ZDI Published Advisories·Sep 14, 05:00 UTC · 2d agoVulnerabilityCVE-2026-31583

ZDI-26-680: Linux Kernel Crypto Subsystem Use-After-Free Local Privilege Escalation Vulnerability

ZDI discloses a Linux kernel crypto subsystem use-after-free (CVE-2026-31719, CVSS 8.8) letting local low-privileged attackers escalate to root.

ZDI advisory ZDI-26-680 covers a use-after-free vulnerability in the Linux kernel crypto subsystem, tracked as CVE-2026-31719 with a CVSS score of 8.8. A local attacker who can already execute low-privileged code can exploit it to escalate privileges on affected installations. The advisory does not report any exploitation in the wild.

ZDI Published Advisories·Sep 14, 05:00 UTC · 2d agoVulnerabilityCVE-2026-31719

ZDI-26-682: Linux Kernel IPv6 Neighbour Discovery Uninitialized Memory Information Disclosure Vulnerability

ZDI discloses an uninitialized-memory flaw in Linux kernel IPv6 neighbor discovery (CVE-2026-43040, CVSS 6.0) allowing information disclosure by already-privileged local attackers.

ZDI advisory ZDI-26-682 describes an uninitialized memory vulnerability in the Linux kernel's IPv6 Neighbour Discovery code, tracked as CVE-2026-43040 with a CVSS score of 6.0. Exploitation requires the attacker to already execute high-privileged code on the target, which severely limits practical impact to kernel memory information disclosure. No active exploitation is mentioned.

ZDI Published Advisories·Sep 14, 05:00 UTC · 2d agoVulnerabilityCVE-2026-430401

ZDI-26-689: Linux Kernel SCTP Subsystem Race Condition Information Disclosure Vulnerability

ZDI discloses Linux Kernel SCTP subsystem race condition (CVE-2026-46227) allowing low-privileged local attackers to disclose sensitive information, CVSS 6.4.

ZDI-26-689 describes a race condition information disclosure vulnerability in the Linux Kernel SCTP subsystem, assigned CVE-2026-46227 with a CVSS rating of 6.4. An attacker needs the ability to execute low-privileged code on the target system to exploit the flaw. The vulnerability exposes sensitive information from affected installations.

ZDI Published Advisories·Sep 14, 05:00 UTC · 2d agoVulnerabilityCVE-2026-46227

MaxKernel: Agentic Kernel Generation for TPUs

Researchers open-source MaxKernel, a multi-agent LLM system that generates and optimizes TPU kernels matching expert hand-tuned baselines on JaxBench.

MaxKernel is a multi-agent system offering three paradigms for TPU kernel development: human-in-the-loop collaborative design, a fully autonomous metric/trace-driven optimization loop, and graph-based autonomous search for global exploration. All paradigms draw on a shared pool of specialized sub-agents for planning, implementation, self-debugging, testing, and hardware profiling. Evaluated on JaxBench's 50 diverse TPU kernel tasks and real-world workloads from open-source models, it consistently matches expert hand-tuned baselines. The system is open-sourced via the AI-Hypercomputer GitHub repository.

Hugging Face daily papers·Sep 2, 20:00 UTC · 13d agoAI tools & infra

ZDI-26-681: Linux Kernel FUSE Subsystem Race Condition Local Privilege Escalation Vulnerability

ZDI discloses CVE-2026-64265, a CVSS 7.8 race condition in the Linux Kernel FUSE subsystem enabling local privilege escalation.

ZDI-26-681 covers a race condition in the Linux Kernel FUSE subsystem that allows local attackers to escalate privileges. Exploitation requires the ability to execute low-privileged code on the target system. ZDI assigned a CVSS rating of 7.8 and CVE-2026-64265.

ZDI Published Advisories·Sep 14, 05:00 UTC · 2d agoAdvisoryCVE-2026-64265