Security Information / 2018 / Security Information -- DSA-4279-1 linux

Debian Security Advisory

DSA-4279-1 linux -- security update

Date Reported:

20 Aug 2018

Affected Packages:

linux

Vulnerable:

Yes

Security database references:

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 DSA 4273-1.

For the stable distribution (stretch), these problems have been fixed in version 4.9.110-3+deb9u3.

We recommend that you upgrade your linux packages.

For the detailed security status of linux please refer to its security tracker page at: https://security-tracker.debian.org/tracker/linux