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this post was submitted on 31 Mar 2024
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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By the way, all Fedora packages are scanned with ClamAV as part of bodhi tests. Here’s the test matrix where xz 5.6.0 passed the scan, and would have allowed the exploit in for the F40 beta if it wasn’t obsoleted by another build where the vulnerability’s mechanism was disabled because it triggered valgrind failures in other software.
Sure, there’s more sophisticated AV software out there, but at the end of the day, the F40 beta was temporarily saved because of luck, the beta freeze period, and valgrind. The ecosystem as a whole was saved because “Jia Tan” wasn’t aware that making Postgres run slightly slower immediately raises alarm bells.