Description
The microcode on AMD 16h 00h through 0Fh processors does not properly handle the interaction between locked instructions and write-combined memory types, which allows local users to cause a denial of service (system hang) via a crafted application, aka the errata 793 issue.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 3.14.2-1 | — |
| Debian 13 | linux | 3.14.2-1 | — |
| Debian 12 | linux | 3.14.2-1 | — |
| Debian 7 | linux | 3.2.65-1+deb7u1 | DSA-3128-1 |
| Debian 6.0 | linux-2.6 | 2.6.32-48squeeze11 | DLA-155-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | kernel +11 | 2.6.18-371.6.1.el5 | RHSA-2014:0285 |
Advisories 3
- RHSA-2014:0285 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-3128-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-155-1 linux-2.6 - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- SUSE-SU-2014:0470 vendor-advisory
- RHSA-2014:0285 vendor-advisory
- [oss-security] 20131202 Xen Security Advisory 82 (CVE-2013-6885) - Guest triggerable AMD CPU erratum may cause host to hang mailing-list
- SUSE-SU-2014:0373 vendor-advisory
- http://support.amd.com/TechDocs/51810_16h_00h-0Fh_Rev_Guide.pdf
- FEDORA-2013-22754 vendor-advisory
- FEDORA-2013-22888 vendor-advisory
- GLSA-201407-03 vendor-advisory
- http://www.zdnet.com/blog/hardware/amd-owns-up-to-cpu-bug/18924
- FEDORA-2013-22866 vendor-advisory
- 63983 vdb-entry
- 1029415 vdb-entry
- 55840 third-party-advisory
- SUSE-SU-2014:0372 vendor-advisory
- SUSE-SU-2014:0459 vendor-advisory
- SUSE-SU-2014:0446 vendor-advisory
- [oss-security] 20131127 CVE-2013-6885 AMD Publ. 51810 Errata 793 system hang mailing-list
- DSA-3128 vendor-advisory
- xen-cve20136885-dos(89335) vdb-entry
- SUSE-SU-2014:0411 vendor-advisory
- [kernel] 20111225 Buildworld loop seg-fault update -- I believe it is hardware mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=1035823