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ebpf

About this tag
eBPF (extended Berkeley Packet Filter) is a Linux kernel technology that allows sandboxed programs to run in kernel space, used for networking, security, and observability. On WindowsForum.com, discussions cover eBPF-related security vulnerabilities (CVE-2025-38192, CVE-2024-26883, CVE-2025-68742, CVE-2025-68744, CVE-2024-47702) affecting Linux kernel stability, including denial-of-service and memory leaks. Additionally, the tag covers runtime-first cloud security integrations with Azure, where Upwind's eBPF-based platform brings runtime telemetry to Azure Marketplace, Microsoft Sentinel, and Defender for Cloud. Topics span kernel bugs, BPF verifier issues, and enterprise cloud security deployments.
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    Upwind brings runtime-first cloud security to Azure Marketplace

    Upwind’s arrival in the Microsoft ecosystem marks a deliberate push to make runtime-first cloud security a native option for Azure customers — a move that bundles runtime detection, container and registry scanning, posture management, and compliance controls into a single...
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    • azure marketplace azure security cloud cnapp cloud marketplace cnapp ebpf ebpf observability ebpf sensor runtime security
    • Replies: 2
    • Forum: Windows News
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    Upwind and Microsoft Bring Runtime First Security to Azure Marketplace

    Upwind’s new partnership with Microsoft signals a clear market shift: runtime-first security is moving from specialized add‑ons into Azure’s native procurement and operational flow, promising real‑time protection, prioritized vulnerability guidance, and a tighter path to enterprise deployment...
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    • azure marketplace azure security cloud native cnapp ebpf runtime security
    • Replies: 1
    • Forum: Windows News
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    Azure Marketplace Integrates Upwind Runtime-First CNAPP with Sentinel and Defender for Cloud

    Microsoft Azure customers now have a new native option to close a longstanding visibility gap: Upwind’s runtime-first security platform is officially integrated into the Azure ecosystem, available through the Azure Marketplace and engineered to feed runtime telemetry into Microsoft Sentinel and...
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    • azure cnapp azure marketplace azure security cnapp defender for cloud ebpf runtime security runtime telemetry sentinel defender sentinel integration
    • Replies: 2
    • Forum: Windows News
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    CVE-2025-38192: Linux kernel DoS from NAT46 eBPF protocol flip

    A careless protocol flip inside an eBPF helper can crash a Linux host: CVE-2025-38192 is a kernel networking bug that occurs when a NAT46 BPF program changes an skb's protocol from IPv4 to IPv6 without clearing the associated destination (dst) pointer, producing a NULL pointer dereference and a...
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    CVE-2024-26883: Linux Kernel BPF Stackmap Bug Fixed on 32 Bit Systems

    The Linux kernel received a targeted fix in April 2024 for a subtle arithmetic/overflow mistake in the BPF stackmap code that can be triggered on 32‑bit architectures — a defect tracked as CVE‑2024‑26883 that can produce undefined behavior, memory mis‑calculations and availability impacts on...
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    Linux Kernel eBPF Fix for CVE-2025-68742: Null Pointer in Softirq

    A subtle but important kernel correctness fix landed this week to close a race and null-pointer access in the eBPF runtime: an invalid access of prog->stats can occur when update_effective_progs fails and the program slot is replaced with a dummy program, allowing a concurrent softirq path to...
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    Kernel eBPF Fix for CVE-2025-68744: Freeing Special Fields to Prevent Memory Leaks

    A kernel-level fix landed this week to close a subtle eBPF map bug that could make kernel-held objects persist longer than intended: CVE-2025-68744 patches a missing cleanup in the BPF percpu hash and LRU-percpu hash update path so that special fields (notably kptr reference/per-CPU pointer...
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    CVE-2024-47702: Linux BPF Verifier Sign Extension Crash Explained

    A subtle mismatch between how the Linux BPF verifier handles 32-bit loads from packet context and how those values are later represented in generated code has been assigned CVE‑2024‑47702 — a medium‑severity bug that can cause kernel verification failures and runtime crashes when eBPF programs...
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    CVE-2023-53221: Linux eBPF fentry Trampoline Memory Leak and Availability Impact

    A subtle bug in the Linux kernel’s eBPF fentry attach path — tracked as CVE-2023-53221 — can leave behind allocated BPF trampoline images when an fentry attach fails, producing a persistent memory leak that, if abused at scale, can deny availability to services and systems; this behavior is...
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    • ebpf linux kernel memory leak vulnerability cve 2023 53221
    • Replies: 0
    • Forum: Security Alerts
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    Linux Kernel Patch Fixes RISC-V BPF Sign Extension for CVE-2025-40079

    The Linux kernel received a focused upstream fix for CVE-2025-40079 — a RISC‑V specific BPF correctness bug where struct ops return values were not being sign‑extended according to the RISC‑V ABI, a mismatch that could trigger kernel panics in the ns_bpf_qdisc selftest and destabilize hosts...
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    Hornet: Microsoft's New eBPF Security Module for Linux Kernel Integrity

    Microsoft’s latest open-source contribution has engineers and security enthusiasts buzzing. In a move that underscores its deepening involvement in cross-platform innovation, Microsoft has proposed Hornet—a Linux security module (LSM) designed to verify the integrity of eBPF programs within the...
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    • cross-platform ebpf hornet kernel integrity linux kernel microsoft open source security module
    • Replies: 0
    • Forum: Windows News
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    Stratoshark: Revolutionizing Cloud-Native Application Security

    Picture this: You're deep in the depths of cloud application security, battling endless layers of abstraction till your brain is spinning like it’s stuck in an infinite loop. Securing cloud-native applications can feel like trying to spot a speck of dust in a sandstorm. But just when you had...
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    • cloud security ebpf kubernetes microsoft azure stratoshark syscalls
    • Replies: 0
    • Forum: Windows News
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