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PC / Tech. > LWN.net
Wednesday January 23, 2019. 08:58 PM
A flag day for DNS is coming on February 1; it may have escaped notice even though it has been planned for nearly a year. Some DNS servers will simply be marked as 'dead' by much of the rest of the internet on or after that day, which means that domain owners need to ensure...
Read-copy update (RCU) is a synchronization mechanism that was added to the Linux kernel in October 2002. RCU is most frequently described as a replacement for reader-writer locking, but has also been used in a number of other ways. RCU is notable in that readers do not...
Max Justicz describes a vulnerability in apt-get and how to prevent it. 'I found a vulnerability in apt that allows a network man-in-the-middle (or a malicious package mirror) to execute arbitrary code as root on a machine installing any package. The bug has been fixed in...
Version 4.0 of the Wine Windows compatibility layer is out. 'This release represents a year of development effort and over 6,000 individual changes' New features include initial Direct3D 12 support, a Vulkan graphics driver, support for high-DPI displays (but only on...
Stable kernels 4.20.4, 4.19.17, 4.14.95, and 4.9.152 have been released. They all contain important fixes and users should upgrade.
Security updates have been issued by Debian (libjpeg-turbo and systemd), Fedora (matrix-synapse, mingw-libjpeg-turbo, and mingw-libvorbis), Mageia (libcaca, libmp4v2, libxml2, pdns-recursor, perl-Email-Address, php-pear-HTML_QuickForm, podofo, and wavpack), openSUSE...
Tuesday January 22, 2019. 04:57 PM
Security updates have been issued by Debian (apt and aria2), Fedora (kernel-headers, kernel-tools, and openssh), openSUSE (webkit2gtk3), Oracle (perl), Red Hat (perl), SUSE (freerdp, python-urllib3, systemd, and wireshark), and Ubuntu (apt, poppler, and tiff).
Monday January 21, 2019. 08:54 PM
Arguably, the most notable characteristic of persistent memory is that it is persistent: it retains its contents over power cycles. One other important aspect of these persistent-memory arrays that, we are told, will soon be everywhere, is their sheer size and low cost;...
The 5.0-rc3 kernel prepatch has been released. 'This rc is a bit bigger than usual. Partly because I missed a networking pull request for rc2, and as a result rc3 now contains _two_ networking pull updates. But part of it may also just be that it took a while for people to...
Security updates have been issued by Fedora (gitolite3, gvfs, php, radare2, and syslog-ng), Mageia (libssh, php, python-django16, and rdesktop), openSUSE (podofo), and SUSE (libraw, openssh, PackageKit, and wireshark).
Friday January 18, 2019. 05:30 PM
Hardware memory encryption is, or will soon be, available on multiple generic CPUs. In its absence, data is stored — and passes between the memory chips and the processor — in the clear. Attackers may be able to access it by using hardware probes or by directly accessing ...
Security updates have been issued by Debian (drupal7), Fedora (electrum and perl-Email-Address), Mageia (gthumb), openSUSE (gitolite, kernel, krb5, libunwind, LibVNCServer, live555, mutt, wget, and zeromq), SUSE (krb5, mariadb, nodejs4, nodejs8, soundtouch, and zeromq), and...
Thursday January 17, 2019. 06:04 PM
The kernel's page cache works to improve performance by minimizing disk I/O and increasing the sharing of physical memory. But, like other performance-enhancing techniques that involve resources shared across security boundaries, the page cache can be abused as a way to...
Stable kernels 4.20.3, 4.19.16, 4.14.94, 4.9.151, and 4.4.171 have been released. They all contain important fixes and users should upgrade.
Security updates have been issued by CentOS (libvncserver), Debian (sssd), Fedora (kernel and kernel-headers), Red Hat (ansible, openvswitch, pyOpenSSL, python-django, and redis), and Ubuntu (policykit-1).
Wednesday January 16, 2019. 09:59 PM
Low-end devices bound for developing countries, such as those running the Android Go edition, lack encryption support because the hardware doesn't provide any cryptographic acceleration. That means users in developing countries have no protection for the data on their...
Security updates have been issued by Debian (systemd and wireshark), Fedora (openssh, php-horde-Horde-Form, and unrtf), Mageia (aria2, libvncserver, x11vnc, and nss), Oracle (kernel and libvncserver), Scientific Linux (libvncserver), SUSE (kernel, soundtouch, webkit2gtk3,...
While the kernel has had support for asynchronous I/O (AIO) since the 2.5 development cycle, it has also had people complaining about AIO for about that long. The current interface is seen as difficult to use and inefficient; additionally, some types of I/O are better...
It is that time of year again: Google is looking for mentor projects for the 2019 Summer of Code. 'GSoC is a global program that draws university student developers from around the world to contribute to open source. Each student spends three months working on a coding...
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