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Fencer Intel
medium 5.6

CVE-2018-3620 json

Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information resi…

published 2018-08-14 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-15474

cvss
5.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
5.6%
EPSS 5.6% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access via a terminal page fault and a side-channel analysis.

Patch / fix

  • xen Debian 14, Debian 13, Debian 12 4.11.1~pre.20180911.5acdd26fdc+dfsg-2
  • linux Debian 14, Debian 13, Debian 12 4.17.15-1
  • intel-microcode Debian 14, Debian 13, Debian 12 3.20180703.1

debian advisories DEBIAN-CVE-2018-3620

  • linux Ubuntu 14.04 LTS 3.13.0-155.205
  • linux Ubuntu 16.04 LTS 4.4.0-133.159
  • linux Ubuntu 18.04 LTS 4.15.0-32.35
  • linux-aws Ubuntu 14.04 LTS 4.4.0-1027.30
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1065.75
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1019.19
  • linux-gcp Ubuntu 16.04 LTS 4.15.0-1017.18~16.04.1
  • linux-gcp Ubuntu 18.04 LTS 4.15.0-1017.18

ubuntu advisories UBUNTU-CVE-2018-3620

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-rt enterprise mrg 2 1:3.10.0-693.37.4.rt56.629.el6rt
  • kernel-rt-trace enterprise mrg 2 1:3.10.0-693.37.4.rt56.629.el6rt
  • kernel-rt-vanilla enterprise mrg 2 1:3.10.0-693.37.4.rt56.629.el6rt
  • kernel-rt-firmware enterprise mrg 2 1:3.10.0-693.37.4.rt56.629.el6rt
  • kernel-rt-debuginfo-common-x86_64 enterprise mrg 2 1:3.10.0-693.37.4.rt56.629.el6rt
  • kernel RHEL 6 2.6.32-754.3.5.el6
  • perf RHEL 6 2.6.32-754.3.5.el6
  • python-perf RHEL 6 2.6.32-754.3.5.el6

red hat advisories RHSA-2018:2396RHSA-2018:2394RHSA-2018:2387RHSA-2018:2393RHSA-2018:2392RHSA-2018:2391

  • kernel-syms SLES 12 SP2-BCL, OpenStack Cloud 7, Enterprise Storage 4 +2 more 4.4.121-92.92.1
  • kernel-source SLES 12 SP2-BCL, OpenStack Cloud 7, Enterprise Storage 4 +2 more 4.4.121-92.92.1
  • lttng-modules SLES 12 SP2-BCL, OpenStack Cloud 7, Enterprise Storage 4 +2 more 2.7.1-9.4.1
  • kernel-default SLES 12 SP2-BCL, SLE High Availability Extension 12 SP2, OpenStack Cloud 7 +3 more 4.4.121-92.92.1
  • kgraft-patch-SLE12-SP2_Update_24 SLES 12 SP2-BCL, OpenStack Cloud 7, Enterprise Storage 4 +2 more 1-3.7.1
  • kernel-rt SLE Real Time 11 SP4 3.0.101.rt130-69.33.1
  • kernel-syms-rt SLE Real Time 11 SP4 3.0.101.rt130-69.33.1
  • kernel-rt_trace SLE Real Time 11 SP4 3.0.101.rt130-69.33.1

suse advisories SUSE-SU-2018:2344-2SUSE-SU-2018:2637-1SUSE-SU-2018:2596-1SUSE-SU-2018:2450-1SUSE-SU-2018:2384-1SUSE-SU-2018:2380-1

  • spectre-meltdown-checker openSUSE Tumbleweed 26.36.0602723-1.1

opensuse advisories openSUSE-SU-2026:11242-1

  • xen Alpine 3.24, Alpine 3.23, Alpine 3.22 +13 more 4.11.1-r0
  • xen Alpine 3.6 4.8.5-r0
  • xen Alpine 3.7 4.9.3-r0

alpine advisories ALPINE-CVE-2018-3620

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • linux Arch Linux 4.18.1.arch1-1
  • linux-zen Arch Linux 4.18.1.arch1-1
  • linux-lts Arch Linux 4.14.63-1

arch linux advisories AVG-756AVG-757AVG-758

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-3620 updated cvss 5.6

Kernel: hw: cpu: L1 terminal fault (L1TF)

  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-862.11.6.el7, kernel 3.10.0-862.11.6.el7, python-perf 3.10.0-862.11.6.el7, kernel-tools 3.10.0-862.11.6.el7, kernel-tools-libs 3.10.0-862.11.6.el7, kernel-abi-whitelists 3.10.0-862.11.6.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-862.11.6.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-862.11.6.el7, kernel 3.10.0-862.11.6.el7, python-perf 3.10.0-862.11.6.el7, kernel-tools 3.10.0-862.11.6.el7, kernel-tools-libs 3.10.0-862.11.6.el7, kernel-abi-whitelists 3.10.0-862.11.6.el7, +1 more
    fixed: vendor fix RHSA-2018:2384
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.3) perf 3.10.0-514.55.4.el7, kernel 3.10.0-514.55.4.el7, python-perf 3.10.0-514.55.4.el7, kernel-tools 3.10.0-514.55.4.el7, kernel-tools-libs 3.10.0-514.55.4.el7, kernel-abi-whitelists 3.10.0-514.55.4.el7, +1 more
    fixed: vendor fix RHSA-2018:2388
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.4) perf 3.10.0-693.37.4.el7, kernel 3.10.0-693.37.4.el7, python-perf 3.10.0-693.37.4.el7, kernel-tools 3.10.0-693.37.4.el7, kernel-tools-libs 3.10.0-693.37.4.el7, kernel-abi-whitelists 3.10.0-693.37.4.el7, +1 more
    fixed: vendor fix RHSA-2018:2387
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-862.11.6.el7
    fixed: vendor fix RHSA-2018:2384
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3) kernel-debuginfo-common-x86_64 3.10.0-514.55.4.el7
    fixed: vendor fix RHSA-2018:2388
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.37.4.el7
    fixed: vendor fix RHSA-2018:2387
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-754.3.5.el6, kernel 2.6.32-754.3.5.el6, kernel-firmware 2.6.32-754.3.5.el6, kernel-abi-whitelists 2.6.32-754.3.5.el6, kernel-debuginfo-common-i686 2.6.32-754.3.5.el6, kernel-debuginfo-common-x86_64 2.6.32-754.3.5.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf 2.6.32-754.3.5.el6, kernel-debuginfo-common-i686 2.6.32-754.3.5.el6, kernel-debuginfo-common-x86_64 2.6.32-754.3.5.el6
    fixed: vendor fix RHSA-2018:2390
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) perf 3.10.0-862.11.6.el7, kernel 3.10.0-862.11.6.el7, python-perf 3.10.0-862.11.6.el7, kernel-kdump 3.10.0-862.11.6.el7, kernel-tools 3.10.0-862.11.6.el7, kernel-tools-libs 3.10.0-862.11.6.el7, +4 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debuginfo-common-ppc64le 3.10.0-862.11.6.el7
    fixed: vendor fix RHSA-2018:2384
show 26 more
  • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-862.11.6.rt56.819.el7, kernel-rt-kvm 3.10.0-862.11.6.rt56.819.el7, kernel-rt-trace 3.10.0-862.11.6.rt56.819.el7, kernel-rt-debug-kvm 3.10.0-862.11.6.rt56.819.el7, kernel-rt-trace-kvm 3.10.0-862.11.6.rt56.819.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-862.11.6.rt56.819.el7
    fixed: vendor fix RHSA-2018:2395
  • Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-754.3.5.el6, kernel 2.6.32-754.3.5.el6, kernel-firmware 2.6.32-754.3.5.el6, kernel-abi-whitelists 2.6.32-754.3.5.el6, kernel-debuginfo-common-i686 2.6.32-754.3.5.el6, kernel-debuginfo-common-x86_64 2.6.32-754.3.5.el6
    fixed: vendor fix RHSA-2018:2390
  • Red Hat Enterprise Linux HPC Node EUS (v. 6.7) perf 2.6.32-573.60.4.el6, kernel 2.6.32-573.60.4.el6, kernel-firmware 2.6.32-573.60.4.el6, kernel-abi-whitelists 2.6.32-573.60.4.el6, kernel-debuginfo-common-i686 2.6.32-573.60.4.el6, kernel-debuginfo-common-x86_64 2.6.32-573.60.4.el6
    fixed: vendor fix RHSA-2018:2391
  • Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf 2.6.32-754.3.5.el6, kernel-debuginfo-common-x86_64 2.6.32-754.3.5.el6
    fixed: vendor fix RHSA-2018:2390
  • Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7) python-perf 2.6.32-573.60.4.el6, kernel-debuginfo-common-x86_64 2.6.32-573.60.4.el6
    fixed: vendor fix RHSA-2018:2391
  • Red Hat Enterprise Linux Long Life (v. 5.9 server) kernel 2.6.18-348.41.1.el5, kernel-PAE 2.6.18-348.41.1.el5, kernel-xen 2.6.18-348.41.1.el5, kernel-debuginfo-common 2.6.18-348.41.1.el5
    fixed: vendor fix RHSA-2018:2603
  • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt 3.10.0-862.11.6.rt56.819.el7, kernel-rt-trace 3.10.0-862.11.6.rt56.819.el7
    fixed: vendor fix RHSA-2018:2395
  • Red Hat Enterprise Linux Server (v. 5 ELS) kernel 2.6.18-434.el5, kernel-PAE 2.6.18-434.el5, kernel-xen 2.6.18-434.el5, kernel-kdump 2.6.18-434.el5, kernel-debuginfo-common 2.6.18-434.el5
    fixed: vendor fix RHSA-2018:2602
  • Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-754.3.5.el6, kernel 2.6.32-754.3.5.el6, kernel-kdump 2.6.32-754.3.5.el6, kernel-firmware 2.6.32-754.3.5.el6, kernel-bootwrapper 2.6.32-754.3.5.el6, kernel-abi-whitelists 2.6.32-754.3.5.el6, +4 more
    fixed: vendor fix RHSA-2018:2390
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-862.11.6.el7, kernel 3.10.0-862.11.6.el7, python-perf 3.10.0-862.11.6.el7, kernel-kdump 3.10.0-862.11.6.el7, kernel-tools 3.10.0-862.11.6.el7, kernel-tools-libs 3.10.0-862.11.6.el7, +6 more
    fixed: vendor fix RHSA-2018:2384
  • Red Hat Enterprise Linux Server AUS (v. 6.4) perf 2.6.32-358.91.4.el6, kernel 2.6.32-358.91.4.el6, kernel-firmware 2.6.32-358.91.4.el6, kernel-debuginfo-common-x86_64 2.6.32-358.91.4.el6
    fixed: vendor fix RHSA-2018:2394
  • Red Hat Enterprise Linux Server AUS (v. 6.5) perf 2.6.32-431.91.3.el6, kernel 2.6.32-431.91.3.el6, kernel-firmware 2.6.32-431.91.3.el6, kernel-abi-whitelists 2.6.32-431.91.3.el6, kernel-debuginfo-common-x86_64 2.6.32-431.91.3.el6
    fixed: vendor fix RHSA-2018:2393
  • Red Hat Enterprise Linux Server AUS (v. 6.6) perf 2.6.32-504.72.4.el6, kernel 2.6.32-504.72.4.el6, kernel-firmware 2.6.32-504.72.4.el6, kernel-abi-whitelists 2.6.32-504.72.4.el6, kernel-debuginfo-common-x86_64 2.6.32-504.72.4.el6
    fixed: vendor fix RHSA-2018:2392
  • Red Hat Enterprise Linux Server AUS (v. 7.2) perf 3.10.0-327.71.4.el7, kernel 3.10.0-327.71.4.el7, python-perf 3.10.0-327.71.4.el7, kernel-tools 3.10.0-327.71.4.el7, kernel-tools-libs 3.10.0-327.71.4.el7, kernel-abi-whitelists 3.10.0-327.71.4.el7, +1 more Red Hat Enterprise Linux Server E4S (v. 7.2) perf 3.10.0-327.71.4.el7, kernel 3.10.0-327.71.4.el7, python-perf 3.10.0-327.71.4.el7, kernel-tools 3.10.0-327.71.4.el7, kernel-tools-libs 3.10.0-327.71.4.el7, kernel-abi-whitelists 3.10.0-327.71.4.el7, +1 more
    fixed: vendor fix RHSA-2018:2389
  • Red Hat Enterprise Linux Server EUS (v. 6.7) perf 2.6.32-573.60.4.el6, kernel 2.6.32-573.60.4.el6, kernel-kdump 2.6.32-573.60.4.el6, kernel-firmware 2.6.32-573.60.4.el6, kernel-bootwrapper 2.6.32-573.60.4.el6, kernel-abi-whitelists 2.6.32-573.60.4.el6, +4 more
    fixed: vendor fix RHSA-2018:2391
  • Red Hat Enterprise Linux Server EUS (v. 7.3) perf 3.10.0-514.55.4.el7, kernel 3.10.0-514.55.4.el7, python-perf 3.10.0-514.55.4.el7, kernel-kdump 3.10.0-514.55.4.el7, kernel-tools 3.10.0-514.55.4.el7, kernel-tools-libs 3.10.0-514.55.4.el7, +6 more
    fixed: vendor fix RHSA-2018:2388
  • Red Hat Enterprise Linux Server EUS (v. 7.4) perf 3.10.0-693.37.4.el7, kernel 3.10.0-693.37.4.el7, python-perf 3.10.0-693.37.4.el7, kernel-kdump 3.10.0-693.37.4.el7, kernel-tools 3.10.0-693.37.4.el7, kernel-tools-libs 3.10.0-693.37.4.el7, +6 more
    fixed: vendor fix RHSA-2018:2387
  • Red Hat Enterprise Linux Server Optional (v. 6) python-perf 2.6.32-754.3.5.el6, kernel-debuginfo-common-i686 2.6.32-754.3.5.el6, kernel-debuginfo-common-ppc64 2.6.32-754.3.5.el6, kernel-debuginfo-common-s390x 2.6.32-754.3.5.el6, kernel-debuginfo-common-x86_64 2.6.32-754.3.5.el6
    fixed: vendor fix RHSA-2018:2390
  • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-862.11.6.el7, kernel-debuginfo-common-x86_64 3.10.0-862.11.6.el7, kernel-debuginfo-common-ppc64le 3.10.0-862.11.6.el7
    fixed: vendor fix RHSA-2018:2384
  • Red Hat Enterprise Linux Server Optional AUS (v. 6.4) kernel 2.6.32-358.91.4.el6, python-perf 2.6.32-358.91.4.el6, kernel-debuginfo-common-x86_64 2.6.32-358.91.4.el6
    fixed: vendor fix RHSA-2018:2394
  • Red Hat Enterprise Linux Server Optional AUS (v. 6.5) kernel 2.6.32-431.91.3.el6, python-perf 2.6.32-431.91.3.el6, kernel-debuginfo-common-x86_64 2.6.32-431.91.3.el6
    fixed: vendor fix RHSA-2018:2393
  • Red Hat Enterprise Linux Server Optional AUS (v. 6.6) python-perf 2.6.32-504.72.4.el6, kernel-debuginfo-common-x86_64 2.6.32-504.72.4.el6
    fixed: vendor fix RHSA-2018:2392
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.2) kernel-debuginfo-common-x86_64 3.10.0-327.71.4.el7 Red Hat Enterprise Linux Server Optional E4S (v. 7.2) kernel-debuginfo-common-x86_64 3.10.0-327.71.4.el7
    fixed: vendor fix RHSA-2018:2389
  • Red Hat Enterprise Linux Server Optional EUS (v. 6.7) python-perf 2.6.32-573.60.4.el6, kernel-debuginfo-common-i686 2.6.32-573.60.4.el6, kernel-debuginfo-common-ppc64 2.6.32-573.60.4.el6, kernel-debuginfo-common-s390x 2.6.32-573.60.4.el6, kernel-debuginfo-common-x86_64 2.6.32-573.60.4.el6
    fixed: vendor fix RHSA-2018:2391
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.3) kernel-debuginfo-common-ppc64 3.10.0-514.55.4.el7, kernel-debuginfo-common-x86_64 3.10.0-514.55.4.el7, kernel-debuginfo-common-ppc64le 3.10.0-514.55.4.el7
    fixed: vendor fix RHSA-2018:2388
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.4) kernel-debuginfo-common-ppc64 3.10.0-693.37.4.el7, kernel-debuginfo-common-x86_64 3.10.0-693.37.4.el7, kernel-debuginfo-common-ppc64le 3.10.0-693.37.4.el7
    fixed: vendor fix RHSA-2018:2387

14 more fixed, 1 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
5 mo ago

Exploit prediction

5.58% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
CNA 3.1 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
NVD 3.0 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
NVD 2.0 4.7 AV:L/AC:M/Au:N/C:C/I:N/A:N

Affected products

  • Intel Corporation Multiple

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.