synced 1 MIN AGO
01 Record

CVE-2020-36558

A race condition in the Linux kernel before 5.5.7 involving VT_RESIZEX could lead to a NULL pointer dereference and general protection fault.

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

A race condition in the Linux kernel before 5.5.7 involving VT_RESIZEX could lead to a NULL pointer dereference and general protection fault.

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.31% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 23.5% of scored records. A rank, not a probability.
NVD base score
5.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-10-08.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2022-07-21 03:46Z4 YR AGO
Last updated
2026-10-08 21:13Z21 DAYS AGO
Reserved
2022-07-21
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class
  • CWE-476NULL Pointer DereferenceBase
Data version
5.2
Document digest
dd6e107ea3dab21fda08073e9cc6f8cf44b603a22e905742e3ebd960a65641c1

05 Affected products

VendorProductVersionsPlatforms
linuxlinux_kernelNot specified—
redhatenterprise_linuxNot specified—
redhatrhel_eusNot specified—
redhatrhel_extras_rtNot specified—
redhatrhev_hypervisorNot specified—

06 References

07 Fixed in

AlmaLinux 8

  • bpftool
    Fixed in 4.18.0-425.3.1.el8
  • kernel
    Fixed in 4.18.0-425.3.1.el8
  • kernel-abi-stablelists
    Fixed in 4.18.0-425.3.1.el8
  • kernel-core
    Fixed in 4.18.0-425.3.1.el8
  • kernel-cross-headers
    Fixed in 4.18.0-425.3.1.el8
  • kernel-debug
    Fixed in 4.18.0-425.3.1.el8
  • kernel-debug-core
    Fixed in 4.18.0-425.3.1.el8
  • kernel-debug-devel
    Fixed in 4.18.0-425.3.1.el8
  • kernel-debug-modules
    Fixed in 4.18.0-425.3.1.el8
  • kernel-debug-modules-extra
    Fixed in 4.18.0-425.3.1.el8
  • kernel-devel
    Fixed in 4.18.0-425.3.1.el8
  • kernel-doc
    Fixed in 4.18.0-425.3.1.el8
  • kernel-headers
    Fixed in 4.18.0-425.3.1.el8
  • kernel-modules
    Fixed in 4.18.0-425.3.1.el8
  • kernel-modules-extra
    Fixed in 4.18.0-425.3.1.el8
  • kernel-rt
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-core
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-debug
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-debug-core
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-debug-devel
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-debug-kvm
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-debug-modules
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-debug-modules-extra
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-devel
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-kvm
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-modules
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-modules-extra
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-tools
    Fixed in 4.18.0-425.3.1.el8
  • kernel-tools-libs
    Fixed in 4.18.0-425.3.1.el8
  • kernel-tools-libs-devel
    Fixed in 4.18.0-425.3.1.el8
  • kernel-zfcpdump
    Fixed in 4.18.0-425.3.1.el8
  • kernel-zfcpdump-core
    Fixed in 4.18.0-425.3.1.el8
  • kernel-zfcpdump-devel
    Fixed in 4.18.0-425.3.1.el8
  • kernel-zfcpdump-modules
    Fixed in 4.18.0-425.3.1.el8
  • kernel-zfcpdump-modules-extra
    Fixed in 4.18.0-425.3.1.el8
  • perf
    Fixed in 4.18.0-425.3.1.el8
  • python3-perf
    Fixed in 4.18.0-425.3.1.el8

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • bpftool
    Fixed in 4.18.0-425.3.1.el8
  • kernel
    Fixed in 4.18.0-425.3.1.el8
  • kernel-abi-stablelists
    Fixed in 4.18.0-425.3.1.el8
  • kernel-core
    Fixed in 4.18.0-425.3.1.el8
  • kernel-cross-headers
    Fixed in 4.18.0-425.3.1.el8
  • kernel-debug
    Fixed in 4.18.0-425.3.1.el8
  • kernel-debug-core
    Fixed in 4.18.0-425.3.1.el8
  • kernel-debug-devel
    Fixed in 4.18.0-425.3.1.el8
  • kernel-debug-modules
    Fixed in 4.18.0-425.3.1.el8
  • kernel-debug-modules-extra
    Fixed in 4.18.0-425.3.1.el8
  • kernel-devel
    Fixed in 4.18.0-425.3.1.el8
  • kernel-doc
    Fixed in 4.18.0-425.3.1.el8
  • kernel-headers
    Fixed in 4.18.0-425.3.1.el8
  • kernel-modules
    Fixed in 4.18.0-425.3.1.el8
  • kernel-modules-extra
    Fixed in 4.18.0-425.3.1.el8
  • kernel-rt
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-core
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-debug
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-debug-core
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-debug-devel
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-debug-kvm
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-debug-modules
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-debug-modules-extra
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-devel
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-kvm
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-modules
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-rt-modules-extra
    Fixed in 4.18.0-425.3.1.rt7.213.el8
  • kernel-tools
    Fixed in 4.18.0-425.3.1.el8
  • kernel-tools-libs
    Fixed in 4.18.0-425.3.1.el8
  • kernel-tools-libs-devel
    Fixed in 4.18.0-425.3.1.el8
  • kernel-zfcpdump
    Fixed in 4.18.0-425.3.1.el8
  • kernel-zfcpdump-core
    Fixed in 4.18.0-425.3.1.el8
  • kernel-zfcpdump-devel
    Fixed in 4.18.0-425.3.1.el8
  • kernel-zfcpdump-modules
    Fixed in 4.18.0-425.3.1.el8
  • kernel-zfcpdump-modules-extra
    Fixed in 4.18.0-425.3.1.el8
  • perf
    Fixed in 4.18.0-425.3.1.el8
  • python3-perf
    Fixed in 4.18.0-425.3.1.el8

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • linux
    Fixed in 5.5.13-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • linux
    Fixed in 5.5.13-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • linux
    Fixed in 5.5.13-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • linux
    Fixed in 4.4.0-178.208
  • linux-aws
    Fixed in 4.4.0-1106.117
  • linux-aws-hwe
    Fixed in 4.15.0-1066.70~16.04.1
  • linux-azure
    Fixed in 4.15.0-1082.92~16.04.1
  • linux-gcp
    Fixed in 4.15.0-1061.65
  • linux-hwe
    Fixed in 4.15.0-99.100~16.04.1
  • linux-hwe-edge
    No fix yet
  • linux-kvm
    Fixed in 4.4.0-1070.77
  • linux-oracle
    Fixed in 4.15.0-1038.42~16.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • linux
    Fixed in 4.15.0-99.100
  • linux-aws
    Fixed in 4.15.0-1066.70
  • linux-aws-5.0
    No fix yet
  • linux-aws-5.3
    No fix yet
  • linux-azure
    No fix yet
  • linux-azure-5.3
    No fix yet
  • linux-azure-edge
    No fix yet
  • linux-gcp
    No fix yet
  • linux-gcp-5.3
    No fix yet
  • linux-gke-4.15
    No fix yet
  • linux-gke-5.4
    No fix yet
  • linux-gkeop-5.4
    No fix yet
  • linux-hwe
    No fix yet
  • linux-hwe-edge
    No fix yet
  • linux-kvm
    Fixed in 4.15.0-1059.60
  • linux-oem
    No fix yet
  • linux-oem-osp1
    Fixed in 5.0.0-1050.55
  • linux-oracle
    Fixed in 4.15.0-1038.42
  • linux-oracle-5.0
    No fix yet
  • linux-oracle-5.3
    No fix yet
  • linux-raspi2
    Fixed in 4.15.0-1061.65
  • linux-snapdragon
    Fixed in 4.15.0-1077.84

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • linux-aws-5.11
    No fix yet
  • linux-aws-5.13
    No fix yet
  • linux-aws-5.8
    No fix yet
  • linux-azure-5.11
    No fix yet
  • linux-azure-5.13
    No fix yet
  • linux-azure-5.8
    No fix yet
  • linux-gcp-5.11
    No fix yet
  • linux-gcp-5.13
    No fix yet
  • linux-gcp-5.8
    No fix yet
  • linux-hwe-5.11
    No fix yet
  • linux-hwe-5.13
    No fix yet
  • linux-hwe-5.8
    No fix yet
  • linux-intel-5.13
    No fix yet
  • linux-oem-5.10
    No fix yet
  • linux-oem-5.13
    No fix yet
  • linux-oem-5.6
    No fix yet
  • linux-oracle-5.11
    No fix yet
  • linux-oracle-5.13
    No fix yet
  • linux-oracle-5.8
    No fix yet
  • linux-raspi2
    No fix yet
  • linux-riscv
    No fix yet
  • linux-riscv-5.11
    No fix yet
  • linux-riscv-5.8
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • linux-intel-iot-realtime
    No fix yet
  • linux-realtime
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • linux-raspi-realtime
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • linux
    No fix yet
  • linux-aws
    Fixed in 4.4.0-1066.70
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-azure
    Fixed in 4.15.0-1082.92~14.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-lts-xenial
    Fixed in 4.4.0-178.208~14.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS-updates 16.04 LTS

  • linux-fips
    Fixed in 4.4.0-1033.38
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS-updates 18.04 LTS

  • linux-aws-fips
    Fixed in 4.15.0-2018.18
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-azure-fips
    Fixed in 4.15.0-2006.7
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-fips
    Fixed in 4.15.0-1029.34
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS 16.04 LTS

  • linux-fips
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS 18.04 LTS

  • linux-aws-fips
    No fix yet
  • linux-azure-fips
    No fix yet
  • linux-gcp-fips
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.