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Oracle Linux: CVE-2018-12130: ELSA-2019-1181: qemu-kvm security update (IMPORTANT) (Multiple Advisories)

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Oracle Linux: CVE-2018-12130: ELSA-2019-1181: qemu-kvm security update (IMPORTANT) (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:C/I:N/A:N)
Published
05/14/2019
Created
05/17/2019
Added
05/15/2019
Modified
12/10/2024

Description

Microarchitectural Fill Buffer Data Sampling (MFBDS): Fill buffers on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-update-guidance_05132019.pdf A flaw was found in the implementation of the "fill buffer", a mechanism used by modern CPUs when a cache-miss is made on L1 CPU cache. If an attacker can generate a load operation that would create a page fault, the execution will continue speculatively with incorrect data from the fill buffer while the data is fetched from higher level caches. This response time can be measured to infer data in the fill buffer.

Solution(s)

  • oracle-linux-upgrade-kernel

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