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Fencer Vulns
medium 5.6

CVE-2018-3693 json

Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an a…

published 2018-07-10 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-15547

cvss
5.6
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
8.6%
EPSS 8.6% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a speculative buffer overflow and side-channel analysis.

Patch / fix

  • fujitsu m12-1_firmware xcp3090
  • fujitsu m12-2_firmware xcp3090
  • fujitsu m12-2s_firmware xcp3090
  • linux Debian 14, Debian 13, Debian 12 4.15.11-1

debian advisories DEBIAN-CVE-2018-3693

  • linux Ubuntu 14.04 LTS 3.13.0-157.207
  • linux Ubuntu 16.04 LTS 4.4.0-112.135
  • linux-aws Ubuntu 14.04 LTS 4.4.0-1011.11
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1049.58
  • linux-gcp Ubuntu 16.04 LTS 4.15.0-1014.14~16.04.1
  • linux-hwe Ubuntu 16.04 LTS 4.15.0-24.26~16.04.1
  • linux-kvm Ubuntu 16.04 LTS 4.4.0-1017.22
  • linux-azure Ubuntu 16.04 LTS 4.15.0-1013.13~16.04.2

ubuntu advisories UBUNTU-CVE-2018-3693

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-alt RHEL 7 4.14.0-115.17.1.el7a
  • perf RHEL 7 4.14.0-115.17.1.el7a
  • kernel RHEL 7 4.14.0-115.17.1.el7a
  • python-perf RHEL 7 4.14.0-115.17.1.el7a
  • kernel-tools RHEL 7 4.14.0-115.17.1.el7a
  • kernel-tools-libs RHEL 7 4.14.0-115.17.1.el7a
  • kernel-bootwrapper RHEL 7 4.14.0-115.17.1.el7a
  • kernel-abi-whitelists RHEL 7 4.14.0-115.17.1.el7a

red hat advisories RHSA-2020:0174RHSA-2018:2390RHSA-2018:2395RHSA-2018:2384RHSA-2019:1946

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-2018-3693 updated cvss 5.9

Kernel: speculative bounds check bypass store

  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    affected: no fix available
  • 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. 7.4) perf 3.10.0-693.55.1.el7, kernel 3.10.0-693.55.1.el7, python-perf 3.10.0-693.55.1.el7, kernel-tools 3.10.0-693.55.1.el7, kernel-tools-libs 3.10.0-693.55.1.el7, kernel-abi-whitelists 3.10.0-693.55.1.el7, +1 more
    fixed: vendor fix RHSA-2019:1946
  • 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. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.55.1.el7
    fixed: vendor fix RHSA-2019:1946
  • 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, perf 4.14.0-115.17.1.el7a, kernel 3.10.0-862.11.6.el7, kernel 4.14.0-115.17.1.el7a, kernel-alt 4.14.0-115.17.1.el7a, python-perf 3.10.0-862.11.6.el7, +13 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, kernel-debuginfo-common-ppc64le 4.14.0-115.17.1.el7a
    fixed: vendor fix RHSA-2018:2384
  • 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
show 13 more
  • 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 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 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. 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 EUS (v. 7.4) perf 3.10.0-693.55.1.el7, kernel 3.10.0-693.55.1.el7, python-perf 3.10.0-693.55.1.el7, kernel-kdump 3.10.0-693.55.1.el7, kernel-tools 3.10.0-693.55.1.el7, kernel-tools-libs 3.10.0-693.55.1.el7, +6 more
    fixed: vendor fix RHSA-2019:1946
  • 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 EUS (v. 7.4) kernel-debuginfo-common-ppc64 3.10.0-693.55.1.el7, kernel-debuginfo-common-x86_64 3.10.0-693.55.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-693.55.1.el7
    fixed: vendor fix RHSA-2019:1946
  • Red Hat Enterprise Linux Workstation (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 Workstation (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 Workstation 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 Workstation 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 8 perf, kernel, bpftool, kernel-core, kernel-tools, python3-perf, +17 more
    not affected: vulnerable code not present

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

Exploit prediction

8.63% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.6 CVSS:3.1/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 Most Modern Operating Systems

References

Sources

Fencer Vulns 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.