Researchers Uncover First Native Spectre v2 Exploit Against Linux Kernel

Cybersecurity researchers have disclosed what they say is the "first native Spectre v2 exploit" against the Linux kernel on Intel systems that could be exploited to read sensitive data from the memory. The exploit, called Native Branch History Injection (BHI), can be used to leak arbitrary kernel memory at 3.5 kB/sec by bypassing existing Spectre v2/BHI mitigations, researchers from Systems and

New Glibc Flaw Grants Attackers Root Access on Major Linux Distros

Malicious local attackers can obtain full root access on Linux machines by taking advantage of a newly disclosed security flaw in the GNU C library (aka glibc). Tracked as CVE-2023-6246 (CVSS score: 7.8), the heap-based buffer overflow vulnerability is rooted in glibc's __vsyslog_internal() function, which is used by syslog() and vsyslog() for system logging purposes. It's said to have

Apple zero-day spyware patches extended to cover older Macs, iPhones and iPads

That double-whammy Apple browser-to-kernel spyware bug combo we wrote up last week? Turns out it applies to all supported Macs and iDevices - patch now!

“Dirty Pipe” Linux kernel bug lets anyone write to any file

Even read-only files can be written to, leading to a dangerously general purpose elevation-of-privilege attack.