CVE-2021-26314

Potential floating point value injection in all supported CPU products, in conjunction with software vulnerabilities relating to speculative execution with incorrect floating point results, may cause the use of incorrect data from FPVI and may result in data leakage.

Weakness

Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.

Affected Software

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/462.html
• https://cwe.mitre.org/data/definitions/541.html
• https://cwe.mitre.org/data/definitions/580.html

References

• http://www.openwall.com/lists/oss-security/2021/06/09/2
• http://www.openwall.com/lists/oss-security/2021/06/10/1
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H36U6CNREC436W6GYO7QUMJIVEA35SCV/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVA2NY26MMXOODUMYZN5DCU3FXMBMBOB/
• https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1003
• http://www.openwall.com/lists/oss-security/2021/06/09/2
• http://www.openwall.com/lists/oss-security/2021/06/10/1
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H36U6CNREC436W6GYO7QUMJIVEA35SCV/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVA2NY26MMXOODUMYZN5DCU3FXMBMBOB/
• https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1003