*/// address 处于内核空间if(unlikely(fault_in_kernel_space(address))) {if(!(error_code & (PF_RSVD | PF_USER | PF_PROT))) {// PF_RSVD: 页面保留,不能分配给进程// PF_USER: 页面是用户空间,不可被内核访问// PF_PROT: 页面只读if(vmalloc_fault(address) >=0)return;if(kmemcheck_fault...
CVE-2021-0920漏洞原理:CVE-2021-0920 是由于 SCM_RIGHTS 的垃圾回收系统(Garbage Collection)中的竞争条件而导致的UAF。SCM_RIGHTS 是一种控制消息,它允许 unix socket将打开的文件描述符从一个进程传输到另一个进程。换句话说,sender发送文件描述符,然后 receiver 从 sender 获取文件描述符。这种文件描述符的传递...
kernel launch bounds for HIP -gsplit-dwarf=<value> Set DWARF fission mode -gz=<value> DWARF debug sections compression type -G <size> Put objects of at most <size> bytes into small data section (MIPS / Hexagon) -g Generate source-level debug information --help-hidden Display help for ...
Linux Kernel CVEs Assorted advisories by Gyorgy Miru and kutyacica Info-leaks 2023: "The code that wasn’t there: Reading memory on an Android device by accident" by Man Yue Mo [article] [CVE-2022-25664] 2022: "EntryBleed: Breaking KASLR under KPTI with Prefetch (CVE-2022-4543)" [arti...
Last week, a critical vulnerability identified as CVE-2022-0185was disclosed, affecting Linux kernel versions 5.1 to 5.16.1. Thesecurity vulnerabilityis an integer underflow in the Filesystem Context module that allows a local attacker to run arbitrary code in the context of the kernel, thu...
4.Linux CVE-2017-16995整数扩展问题导致提权漏洞分析 5.Issue 1711: Linux: eBPF Spectre v1 mitigation is insufficient 6.https://www.kernel.org/doc/Documentation/networking/filter.txt 7.Analysis and mitigation of speculative store bypass (CVE-2018-3639) ...
10-year security maintenance and CVE Patching Kernel Livepatch for 24/7 patching with no downtime Extended security for infrastructure and applications Ubuntu is one of the mostpopularLinux distrosfor various reasons. Well, the most popular qualities of Linux and simultaneously with Mint are wholly ...
The CVE Time Machine Greg Kroah-Hartman, the upstream Linux Stable maintainer, gave an excellent talk and analysis of the problems with CVEs in the Linux kernel at the Kernel Recipes conference in 2019. The full talk is on youtube and is both entertaining and still relevantGregKH on "CVEs...
概述:内 存管理子系统,作为 kernel 核心中的核心,是承接所有系统活动的舞台,也是 Linux kernel 中最为庞杂的子系统, 没有之一.截止 4.2 版本,内存管理子系统(下简称 MM)所有平台独立的核心代码(C文件和头文件)达到11万6千多行,这还不包括平台相关的 C 代码, 及一些汇编代码;与之相比,调度子系统的平台独立的...
2019年,Linux Kernel正式进入5.x时代,众多新特性中,与存储领域相关度最高的便是最新的IO引擎——io_uring。从一些性能测试的结论来看,io_uring性能远高于native AIO方式,带来了巨大的性能提升,这对当前异步IO领域也是一个big news。 对于问题1,本文简述了Linux过往的的IO发展历程,同步IO接口、原生异步IO接口AIO的...