Ubuntu Xenial 16.04 users who updated to receive the Meltdown and Spectre patches are reporting they are unable to boot their systems and have been forced to roll back to an earlier Linux kernel image.
The Linux kernel team has released a patch to fix a security bug that could allow an attacker to execute code with elevated privileges.
Multiple Linux distros are issuing security updates for OS versions that still use an older kernel branch after it recently came to light that a mild memory bug was in reality much worse, and the bug was recently categorized as a security flaw.
A new security feature added in macOS High Sierra (10.13) named "Secure Kernel Extension Loading" (SKEL) can be bypassed to allow the loading of malicious kernel extensions.
Malware developers can abuse a programming error in the Windows kernel to prevent security software from identifying if, and when, malicious modules have been loaded at runtime.
Adam Donenfeld, a researcher with mobile security firm Zimperium, has published today proof-of-concept code for zIVA — a kernel exploit that affects iOS 10.3.1 and previous versions.
A new feature added in test snapshots for OpenBSD releases will create a unique kernel every time an OpenBSD user reboots or upgrades his computer.
Security experts have discovered a method of bypassing Windows PatchGuard protections and hooking malicious code into the Windows kernel, which allows an attacker to plant rootkits on systems previously thought to be impregnable.