CVE-2018-12126 Information disclosure in Central ProcCVE-2018-12126essing Units (CPUs)

What is CVE-2018-12126?

CVE-2018-12126 is a medium-severity vulnerability in Fedoraproject Fedora, published on 30 May 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Microarchitectural Store Buffer Data Sampling (MSBDS): Store 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

Weakness: CWE-200

Which versions are affected by CVE-2018-12126?

It affects 2 products.

Products include Fedoraproject Fedora, Intel Microarchitectural Store Buffer Data Sampling Firmware.

How do I fix CVE-2018-12126?

Apply the vendor's patch.

Is CVE-2018-12126 being exploited?

There is no known exploitation of CVE-2018-12126 in the wild and no public exploit code.

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All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2018-12126, DEBIAN-CVE-2018-12126, GHSA-443r-v97h-37x3, UBUNTU-CVE-2018-12126.