Monday, May 11th, 2020

Time	Event
3:04p	Security updates for Monday Security updates have been issued by Arch Linux (chromium and firefox), Debian (libntlm, squid, thunderbird, and wordpress), Fedora (chromium, community-mysql, crawl, roundcubemail, and xen), Mageia (chromium-browser-stable), openSUSE (chromium, firefox, LibVNCServer, openldap2, opera, ovmf, php7, python-PyYAML, rpmlint, rubygem-actionview-5_1, slirp4netns, sqliteodbc, squid, thunderbird, and webkit2gtk3), Oracle (firefox, git, gnutls, kernel, libvirt, squid, and targetcli), Red Hat (thunderbird), SUSE (firefox, squid, and thunderbird), and Ubuntu (mailman). (Comment on this)
3:15p	A set of stable kernels Stable kernels 5.6.12, 5.4.40, 4.19.122, 4.14.180, 4.9.223, and 4.4.223 have been released. They all contain important fixes and users should upgrade. (Comment on this)
6:55p	[$] O_MAYEXEC — explicitly opening files for execution Normally, when a kernel developer shows up with a proposed option that doesn't do anything, a skeptical response can be expected. But there are exceptions. Mickaël Salaün is proposing the addition of a new flag (O_MAYEXEC) for the openat2() system call that, by default, will change nothing. But it does open a path toward tighter security in some situations. (Comment on this)
7:49p	Hussain: Lord of the io_uring Shuveb Hussain has posted an extensive introduction to io_uring, complete with examples and a reference guide. "Because of the shared ring buffers between the kernel and user space, io_uring can be a zero-copy system. Copying bytes around becomes necessary when there are system calls that transfer data between kernel and user space are involved. But since the bulk of the communication in io_uring is via buffers shared between the kernel and user space, this huge performance overhead is completely avoided." (Comment on this)

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