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Fencer Vulns
medium 5.5

CVE-2020-0549 json

Cleanup errors in some data cache evictions for some Intel(R) Processors may allow an authenticated user to potentially enable information…

published 2020-01-28 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-2047

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

Summary

Cleanup errors in some data cache evictions for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Patch / fix

  • intel-microcode Debian 14, Debian 13, Debian 12 3.20200609.1

debian advisories DEBIAN-CVE-2020-0549

  • intel-microcode Ubuntu 16.04 LTS 3.20200609.0ubuntu0.16.04.0
  • intel-microcode Ubuntu 18.04 LTS 3.20200609.0ubuntu0.18.04.0
  • intel-microcode Ubuntu 20.04 LTS 3.20200609.0ubuntu0.20.04.0
  • intel-microcode Ubuntu Pro 14.04 LTS 3.20200609.0ubuntu0.14.04.0

ubuntu advisories UBUNTU-CVE-2020-0549

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

  • microcode_ctl RHEL 7 2:2.1-73.11.el7_9
  • microcode_ctl RHEL 8 4:20210216-1.20210608.1.el8_4
  • microcode_ctl RHEL 7 2:2.1-61.6.el7_8
  • microcode_ctl RHEL 8 4:20191115-4.20200602.2.el8_2
  • microcode_ctl RHEL 6 2:1.17-33.26.el6_10
  • microcode_ctl RHEL 7.3 AUS 2:2.1-16.42.el7_3
  • microcode_ctl RHEL 7.2 AUS 2:2.1-12.39.el7_2
  • microcode_ctl RHEL 7.6 TUS, RHEL 7.6 E4S, RHEL 7.6 AUS 2:2.1-47.23.el7_6

red hat advisories RHSA-2021:3322RHSA-2021:3323RHSA-2021:3317RHSA-2021:3364RHSA-2021:3255RHSA-2021:3176

  • sca-patterns-hae SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.1-150300.10.3.1
  • sca-patterns-base SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.0-150300.10.3.1
  • sca-patterns-suma SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.0-150300.9.3.1
  • sca-server-report SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.1-150300.11.3.1
  • sca-patterns-sle11 SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.1-150300.18.3.1
  • sca-patterns-sle12 SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.1-150300.3.3.1
  • sca-patterns-sle15 SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.1-150300.14.3.1
  • ucode-intel SLES for SAP 12 SP5, SLES 12 SP5 20200602-3.12.1

suse advisories SUSE-FU-2022:4496-1SUSE-SU-2020:1601-1SUSE-SU-2020:1600-1SUSE-SU-2020:1595-1SUSE-SU-2020:14394-1SUSE-SU-2020:1589-1

  • ucode-intel openSUSE Leap 15.1 20200602-lp151.2.24.1

opensuse advisories openSUSE-SU-2020:0791-1

  • microcode_ctl Rocky Linux 8 4:20210216-1.20210608.1.el8_4

rocky linux advisories RLSA-2021:3027

  • intel-ucode Arch Linux 20200609-1

arch linux advisories AVG-1187

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-2020-0549 updated cvss 6.5

hw: L1D Cache Eviction Sampling

  • Red Hat Enterprise Linux 5 microcode_ctl
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux BaseOS (v. 8) microcode_ctl 20191115-4.20200602.2.el8_2, microcode_ctl 20210216-1.20210608.1.el8_4
    fixed: vendor fix RHSA-2020:2431
  • Red Hat Enterprise Linux BaseOS E4S (v. 8.0) microcode_ctl 20180807a-2.20200609.1.el8_0
    fixed: vendor fix RHSA-2020:2757
  • Red Hat Enterprise Linux BaseOS EUS (v. 8.1) microcode_ctl 20190618-1.20200609.1.el8_1, microcode_ctl 20190618-1.20210608.1.el8_1
    fixed: vendor fix RHSA-2020:2677
  • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) microcode_ctl 20191115-4.20210608.1.el8_2
    fixed: vendor fix RHSA-2021:3364
  • Red Hat Enterprise Linux Client (v. 7) microcode_ctl 2.1-61.6.el7_8, microcode_ctl 2.1-73.11.el7_9 Red Hat Enterprise Linux ComputeNode (v. 7) microcode_ctl 2.1-61.6.el7_8
    fixed: vendor fix RHSA-2020:2432
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) microcode_ctl 2.1-47.14.el7_6
    fixed: vendor fix RHSA-2020:2842
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.7) microcode_ctl 2.1-53.9.el7_7, microcode_ctl 2.1-53.18.el7_7
    fixed: vendor fix RHSA-2021:3029
show 18 more
  • Red Hat Enterprise Linux Desktop (v. 6) microcode_ctl 1.17-33.26.el6_10 Red Hat Enterprise Linux HPC Node (v. 6) microcode_ctl 1.17-33.26.el6_10 Red Hat Enterprise Linux Server (v. 6) microcode_ctl 1.17-33.26.el6_10
    fixed: vendor fix RHSA-2020:2433
  • Red Hat Enterprise Linux Server (v. 7) microcode_ctl 2.1-61.6.el7_8, microcode_ctl 2.1-73.11.el7_9
    fixed: vendor fix RHSA-2020:2432
  • Red Hat Enterprise Linux Server AUS (v. 6.5) microcode_ctl 1.17-17.31.el6_5
    fixed: vendor fix RHSA-2020:2707
  • Red Hat Enterprise Linux Server AUS (v. 6.6) microcode_ctl 1.17-19.29.el6_6
    fixed: vendor fix RHSA-2020:2706
  • Red Hat Enterprise Linux Server AUS (v. 7.2) microcode_ctl 2.1-12.30.el7_2, microcode_ctl 2.1-12.39.el7_2
    fixed: vendor fix RHSA-2020:2679
  • Red Hat Enterprise Linux Server AUS (v. 7.3) microcode_ctl 2.1-16.33.el7_3, microcode_ctl 2.1-16.42.el7_3
    fixed: vendor fix RHSA-2020:2680
  • Red Hat Enterprise Linux Server AUS (v. 7.4) microcode_ctl 2.1-22.32.el7_4, microcode_ctl 2.1-22.41.el7_4
    fixed: vendor fix RHSA-2020:2771
  • Red Hat Enterprise Linux Server AUS (v. 7.6) microcode_ctl 2.1-47.23.el7_6
    fixed: vendor fix RHSA-2021:3317
  • Red Hat Enterprise Linux Server E4S (v. 7.3) microcode_ctl 2.1-16.33.el7_3
    fixed: vendor fix RHSA-2020:2680
  • Red Hat Enterprise Linux Server E4S (v. 7.4) microcode_ctl 2.1-22.32.el7_4, microcode_ctl 2.1-22.41.el7_4
    fixed: vendor fix RHSA-2020:2771
  • Red Hat Enterprise Linux Server E4S (v. 7.6) microcode_ctl 2.1-47.23.el7_6
    fixed: vendor fix RHSA-2021:3317
  • Red Hat Enterprise Linux Server EUS (v. 7.6) microcode_ctl 2.1-47.14.el7_6
    fixed: vendor fix RHSA-2020:2842
  • Red Hat Enterprise Linux Server EUS (v. 7.7) microcode_ctl 2.1-53.9.el7_7, microcode_ctl 2.1-53.18.el7_7
    fixed: vendor fix RHSA-2021:3029
  • Red Hat Enterprise Linux Server TUS (v. 7.3) microcode_ctl 2.1-16.33.el7_3
    fixed: vendor fix RHSA-2020:2680
  • Red Hat Enterprise Linux Server TUS (v. 7.4) microcode_ctl 2.1-22.32.el7_4, microcode_ctl 2.1-22.41.el7_4
    fixed: vendor fix RHSA-2020:2771
  • Red Hat Enterprise Linux Server TUS (v. 7.6) microcode_ctl 2.1-47.23.el7_6
    fixed: vendor fix RHSA-2021:3317
  • Red Hat Enterprise Linux Workstation (v. 6) microcode_ctl 1.17-33.26.el6_10
    fixed: vendor fix RHSA-2020:2433
  • Red Hat Enterprise Linux Workstation (v. 7) microcode_ctl 2.1-61.6.el7_8, microcode_ctl 2.1-73.11.el7_9
    fixed: vendor fix RHSA-2020:2432

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

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • Intel Intel(R) Processors

Classification

Weakness
  • CWE-404 Improper Resource Shutdown or Release

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.