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not knowing the /proc file system

Overview I’ve been working quite with files and file systems on Linux recently. Mostly from the vantage point of either a shell or a python script. I wanted to practice coding against the Linux API, so I cracked open my copy of the Linux Programming Interface to see if I could find some useful info. As usual, I found myself on an enjoyable tangent learning about file system and process fundamentals. ....

Chris Wellon , Michael Kerrisk , Linux Programming Interface ,

Kernel index [LWN.net]

Kernel index [LWN.net]
lwn.net - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from lwn.net Daily Mail and Mail on Sunday newspapers.

Linuxcon Europe , Andrew Morton , Evgeniy Polyakov , Kevan Jacobson , Runtime Initiative , Efficient Implementation Of Fundamental Operating Systems Services , Kernel Developers Summit , Understanding Linux Network Internals , Outreach Program For Women , Trustees Linux , Linux Kernel Development , Korea Linux Forum , Android Graphics , Con Japan , Linear Address Masking , Big Kernel Lock , Big Kernel , Filesystem Workshop , Filesystem Summit , Memory Management Summit , Kernel Development , Second Edition , Device Drivers , Third Edition , Linux Kernel Primer , Linux Kernel ,

Exploration of the Dirty Pipe Vulnerability (CVE-2022-0847)

Intro This blog post reflects our exploration of the Dirty Pipe Vulnerability in the Linux kernel. The bug was discovered by Max Kellermann and described here. If you haven’t read the original publication yet, we’d suggest that you read it first (maybe also twice ;)). While Kellermann’s post is a great resource that contains all the relevant information to understand the bug, it assumes some familiarity with the Linux kernel. To fully understand what’s going on we’d like to shed some light on specific kernel internals. ....

Linus Torvalds , Michael Kerrisk , Max Kellermann , Dirty Pipe Vulnerability , While Kellermann , Dirty Pipe Specific , Dirty Pipe , Linux Programming Interface , System Call , Linux Virtual File System , Kernel Source , Page Cache ,