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authorspeck for Pawan Gupta <speck@linutronix.de>2019-05-06 12:23:50 -0700
committerThomas Gleixner <tglx@linutronix.de>2019-05-08 11:31:31 +0200
commite672f8bf71c66253197e503f75c771dd28ada4a0 (patch)
tree985e0963c56ede0ce8dfcaf5ab7ff101e2b8250c /Documentation/admin-guide/hw-vuln
parent5c14068f87d04adc73ba3f41c2a303d3c3d1fa12 (diff)
x86/mds: Add MDSUM variant to the MDS documentation
Updated the documentation for a new CVE-2019-11091 Microarchitectural Data Sampling Uncacheable Memory (MDSUM) which is a variant of Microarchitectural Data Sampling (MDS). MDS is a family of side channel attacks on internal buffers in Intel CPUs. MDSUM is a special case of MSBDS, MFBDS and MLPDS. An uncacheable load from memory that takes a fault or assist can leave data in a microarchitectural structure that may later be observed using one of the same methods used by MSBDS, MFBDS or MLPDS. There are no new code changes expected for MDSUM. The existing mitigation for MDS applies to MDSUM as well. Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Tyler Hicks <tyhicks@canonical.com> Reviewed-by: Jon Masters <jcm@redhat.com>
Diffstat (limited to 'Documentation/admin-guide/hw-vuln')
-rw-r--r--Documentation/admin-guide/hw-vuln/mds.rst5
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/admin-guide/hw-vuln/mds.rst b/Documentation/admin-guide/hw-vuln/mds.rst
index 244ab47d1fb3..e0dccf414eca 100644
--- a/Documentation/admin-guide/hw-vuln/mds.rst
+++ b/Documentation/admin-guide/hw-vuln/mds.rst
@@ -32,11 +32,12 @@ Related CVEs
The following CVE entries are related to the MDS vulnerability:
- ============== ===== ==============================================
+ ============== ===== ===================================================
CVE-2018-12126 MSBDS Microarchitectural Store Buffer Data Sampling
CVE-2018-12130 MFBDS Microarchitectural Fill Buffer Data Sampling
CVE-2018-12127 MLPDS Microarchitectural Load Port Data Sampling
- ============== ===== ==============================================
+ CVE-2019-11091 MDSUM Microarchitectural Data Sampling Uncacheable Memory
+ ============== ===== ===================================================
Problem
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