Security: CVE-2019-5489, Patches, Reproducible Builds

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New Side-Channel Attack Steals Data from Windows, Linux Page Cache
The attack is not limited by hardware architecture and it proved successful in local attempts against Windows and Linux machines, allowing bypassing of security sandboxes, running a timed user interface redressing, and the recovery of temporary passwords generated automatically.
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Linus Torvalds opts for the scream test: Linux kernel syscall tweaked to shut data-leak hole – anyone upset, yell now
For Linux environments, the issue has been assigned CVE-2019-5489. That bug database entry notes that remote attacks are possible, for example, by exploiting latency in accessing files via an Apache web server to potentially sniff private data.
The Windows kernel was also vulnerable, and updated for Insider testers ahead of the paper's public reveal on Monday, with the patch due for a formal rollout. Now the Linux kernel has followed suit with this fix to the mincore syscall, which should trickle into distros once it's undergone testing.
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Security updates for Tuesday
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Reproducible Builds: Weekly report #193
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