CVE-2017-16995

Descripción de la vulnerabilidad Ubuntu es un sistema operativo GNU/Linux de código abierto orientado principalmente a aplicaciones de escritorio, basado en Debian GNU/Linux. Recientemente, un hacker de sombrero blanco reveló que la última versión de Ubuntu Ubuntu 16.04 contiene una vulnerabilida...

CVE-2026-7878-eBPF-Verifier-Type-Confusion-Kernel-Memory-Read-Write

6. CVE-2026-7878 – eBPF 验证器类型混淆 → 内核内存读写 概述 eBPF 验证器边界跟踪中的一个细微整数溢出，允许攻击者构造一个可访问越界内核内存的 eBPF 程序。 严重性： 严重（内核权限提升） 用户态 eBPF 验证器模拟器（C）与漏洞利用 root@kitploit: // ebpfverifiersim.c - Simulated vulnerable verifier with type confusion include include include include define MEMSIZE 256 uint8t...

grlh

用一个奇怪的小技巧禁用 eBPF 验证器 如 twitter.com 上所见 https://twitter.com/bleidl/status/871527499984982016...

CVE-2017-16995

ubuntu 最新版本（Ubuntu 16.04）存在高危的本地提权漏洞，漏洞编号为CVE-2017-16995。该漏洞存在于调用eBPF bpf2的Linux内核系统中，当用户提供恶意BPF程序使eBPF验证器模块产生计算错误，导致任意内存读写问题，低权限用户可使用此漏洞获得管理权 限。 版本范围：Ubuntu 16.04.116.04.4 均存在此漏洞 使用方法： gcc -o upstream44 upstream44.c即可提权。...

CVE-2022-23222

CVE-2022-23222 Haga clic aquí si solo desea compilar y ejecutar el asunto. Lo que sigue es más o menos una traducción del artículo chino, disponible aquí. Usaremos el código del kernel principal para la versión 5.13.0 como referencia. Hay un desajuste entre los tipos de puntero disponibles y la...

CVE-2017-16995

Linux カーネル バージョン 4.14 - 4.4 Ubuntu && Debian 説明 この脆弱性はLinuxカーネルに搭載されているeBPF bpf2システムコールに存在し、ユーザーが悪意のあるBPFプログラムを提供することでeBPF検証モジュールの計算エラーを引き起こし、任意のメモリ読み書き問題を引き起こします。非特権ユーザーはこの脆弱性を利用して権限昇格を得ることができます。脆弱性はGoogle Project Zeroによって発見されました。 脆弱性番号 CVE-2017-16995 脅威レベル 高リスク デモ root@kitploit:...

cve-2021-3490-ebpf-analysis

cve-2021-3490-ebpf-analysis 研究实现，演示与 CVE-2021-3490 相关的 Linux eBPF 子系统交互。包含 BPF map 创建、系统调用封装、命名空间设置和验证器分析。仅用于教育和安全研究目的。 CVE-2021-3490 – eBPF 验证器边界跟踪分析 概述 本仓库包含探索 Linux 内核 eBPF 子系统的 C 实现，涉及 CVE-2021-3490，这是一个涉及 eBPF 验证器中 32 位边界跟踪不正确的漏洞。 该项目的目标是理解 bpf 系统调用的内部工作方式、如何从用户空间创建和管理 BPF...

CVE-2026-53670

PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, in the Prevail eBPF verifier, EbpfTransformer::add silently skips offset-variable updates when the destination register carries a non-singleton typeset two or more simultaneously possible...

CVE-2026-53671

PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, the abstract transformer in prevail treats writes through a TCTX-typed base register as a silent no-op: domemstore in src/crab/ebpftransformer.cpp only models TSTACK stores, and the...

CVE-2026-53706

PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, the prevail eBPF verifier accepts ALU32 ADD and SUB instructions that operate on pointer-typed registers without checking the is64 flag. Because ALU32 arithmetic zero-extends the 32-bit...

CVE-2026-53706 PREVAIL: ALU32 pointer arithmetic accepted without is64 gate — verifier emits false PASS for pointer-corrupting programs

PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, the prevail eBPF verifier accepts ALU32 ADD and SUB instructions that operate on pointer-typed registers without checking the is64 flag. Because ALU32 arithmetic zero-extends the 32-bit...

CVE-2026-53706 PREVAIL: ALU32 pointer arithmetic accepted without is64 gate — verifier emits false PASS for pointer-corrupting programs

PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, the prevail eBPF verifier accepts ALU32 ADD and SUB instructions that operate on pointer-typed registers without checking the is64 flag. Because ALU32 arithmetic zero-extends the 32-bit...

CVE-2026-53706

PREVAIL is a Polynomial-Runtime eBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4 , the verifier accepts ALU32 ADD and SUB instructions that operate on pointer-typed registers without checking the is64 flag . Because ALU32 arithmetic zero-extends the 32-bit result, the ...

CVE-2026-53670 PREVAIL: Non-singleton typeset in add() skips offset update, allowing OOB access to pass eBPF verification

PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, in the Prevail eBPF verifier, EbpfTransformer::add silently skips offset-variable updates when the destination register carries a non-singleton typeset two or more simultaneously possible...

CVE-2026-53670 PREVAIL: Non-singleton typeset in add() skips offset update, allowing OOB access to pass eBPF verification

PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, in the Prevail eBPF verifier, EbpfTransformer::add silently skips offset-variable updates when the destination register carries a non-singleton typeset two or more simultaneously possible...

CVE-2026-53670 PREVAIL: Non-singleton typeset in add() skips offset update, allowing OOB access to pass eBPF verification

PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, in the Prevail eBPF verifier, EbpfTransformer::add silently skips offset-variable updates when the destination register carries a non-singleton typeset two or more simultaneously possible...

EUVD-2026-70244

PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, in the Prevail eBPF verifier, EbpfTransformer::add silently skips offset-variable updates when the destination register carries a non-singleton typeset two or more simultaneously possible...

CVE-2026-53670

PREVAIL , a polynomial-runtime eBPF verifier using an abstract interpretation layer, is vulnerable to a verifier bypass prior to version 0.2.4 . In the EbpfTransformer::add() function, offset-variable updates are silently skipped when the destination register carries a non-singleton typeset (two ...

CVE-2026-53671

PREVAIL is a polynomial-runtime eBPF verifier. Prior to version 0.2.4 , its abstract transformer in do_mem_store (src/crab/ebpf_transformer.cpp) silently ignores writes through a T_CTX -typed base register, and the checker's T_CTX bounds arm never tests AccessType::write. An attacker can craft an...

CVE-2026-53671 PREVAIL: Context-write no-op in do_mem_store allows unsafe eBPF programs to pass verification

PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, the abstract transformer in prevail treats writes through a TCTX-typed base register as a silent no-op: domemstore in src/crab/ebpftransformer.cpp only models TSTACK stores, and the...