April 10, 2024 at 06:33AM
Researchers have disclosed the first native Spectre v2 exploit against the Linux kernel on Intel systems, called Native Branch History Injection (BHI), allowing to leak sensitive data from memory. The exploit can bypass existing mitigations and impacts all vulnerable Intel systems. Other recent related vulnerabilities include GhostRace and Ahoi Attacks, prompting security fixes.
It seems like the meeting notes you provided contain information about a security vulnerability called Native Branch History Injection (BHI) that affects the Linux kernel on Intel systems, allowing an attacker to read sensitive data from memory. The exploit bypasses existing Spectre v2/BHI mitigations and can leak arbitrary kernel memory at a rate of 3.5 kB/sec. The exploit could impact all Intel systems susceptible to BHI and has been confirmed to affect various systems and platforms, including Illumos, Red Hat, SUSE Linux, Triton Data Center, and Xen.
In addition to the BHI vulnerability, the notes mention other security concerns, such as GhostRace (CVE-2024-2193) and the Ahoi Attacks, which exploit speculative execution and race conditions to compromise hardware-based trusted execution environments.
These findings are significant, and it’s clear that they represent a potential risk to system security. It would be prudent for the relevant teams within the organization to monitor the developments and consider any necessary actions to mitigate the impact of these vulnerabilities.