CVE-2017-7262
Published: 25 March 2017
The AMD Ryzen processor with AGESA microcode through 2017-01-27 allows local users to cause a denial of service (system hang) via an application that makes a long series of FMA3 instructions, as demonstrated by the Flops test suite.
Notes
| Author | Note |
|---|---|
| Debian | Hardware bug in AMD Ryzen CPUs, cannot be fixed via micro code updates, but only BIOS updates |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
amd64-microcode Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
|
| precise |
Does not exist
|
|
| trusty |
Not vulnerable
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Not vulnerable
|
|
| zesty |
Not vulnerable
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
References
- http://forum.hwbot.org/showpost.php?p=480524
- http://forum.hwbot.org/showthread.php?t=167605
- https://news.ycombinator.com/item?id=13924192
- https://www.techpowerup.com/231536/amd-ryzen-machine-crashes-to-a-sequence-of-fma3-instructions
- https://www.cve.org/CVERecord?id=CVE-2017-7262
- NVD
- Launchpad
- Debian