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| author | speck for Pawan Gupta <speck@linutronix.de> | 2019-05-06 22:23:50 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-05-08 12:31:31 +0300 |
| commit | e672f8bf71c66253197e503f75c771dd28ada4a0 (patch) | |
| tree | 985e0963c56ede0ce8dfcaf5ab7ff101e2b8250c /Documentation/admin-guide/hw-vuln | |
| parent | 5c14068f87d04adc73ba3f41c2a303d3c3d1fa12 (diff) | |
| download | linux-e672f8bf71c66253197e503f75c771dd28ada4a0.tar.xz | |
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.rst | 5 |
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 ------- |