Debian Security Advisory
DLA-1481-1 linux-4.9 -- LTS security update
- Date Reported:
- 28 Aug 2018
- Affected Packages:
- Security database references:
- In the Debian bugtracking system: Bug 906769.
In Mitre's CVE dictionary: CVE-2018-3620, CVE-2018-3646.
- More information:
Multiple researchers have discovered a vulnerability in the way the Intel processor designs have implemented speculative execution of instructions in combination with handling of page-faults. This flaw could allow an attacker controlling an unprivileged process to read memory from arbitrary (non-user controlled) addresses, including from the kernel and all other processes running on the system or cross guest/host boundaries to read host memory.
To fully resolve these vulnerabilities it is also necessary to install updated CPU microcode (only available in Debian non-free). Common server class CPUs are covered in the update released as DLA 1446-1.
For Debian 8
Jessie, these problems have been fixed in version 4.9.110-3+deb9u4~deb8u1.
We recommend that you upgrade your linux-4.9 packages.
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS