CVE-2020-11884

Aliases:UBUNTU-CVE-2020-11884DEBIAN-CVE-2020-11884
Advisory lineage Upstream: 0 Downstream: 9
Modified
Published: 29 Apr 2020, 12:07
Last modified:04 Aug 2024, 11:42

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7 HIGH
v3.1 (nvd)
EPSS Score
0.4% LOW
0% probability +0.34%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

29 Apr 2020, 12:07
Published
Vulnerability first disclosed
04 Aug 2024, 11:42
Last Modified
Vulnerability information updated

Description

In the Linux kernel 4.19 through 5.6.7 on the s390 platform, code execution may occur because of a race condition, as demonstrated by code in enable_sacf_uaccess in arch/s390/lib/uaccess.c that fails to protect against a concurrent page table upgrade, aka CID-3f777e19d171. A crash could also occur.

CVSS Metrics

  • v3.1•HIGH•Score: 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 6.9AV:L/AC:M/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.40%• Percentile: 34%

Techniques & Countermeasures

  • CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

    The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Affected Systems

  • canonical•ubuntu_linux

    16.04 | 18.04 | 19.10 | 20.04

  • debian•linux

    < 5.6.7-1 | < 5.6.7-1 | < 5.6.7-1 | < 5.6.7-1

  • ubuntu•linux

    < 4.15.0-99.100 | < 5.4.0-28.32

  • ubuntu•linux-aws-5.3

    < 5.3.0-1019.21~18.04.1

  • ubuntu•linux-aws-fips

    < 4.15.0-2018.18 | all

  • ubuntu•linux-azure-4.15

    < 4.15.0-1083.93

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2006.7 | all

  • ubuntu•linux-bluefield

    all

  • ubuntu•linux-fips

    < 4.15.0-1029.34

  • ubuntu•linux-gcp-fips

    all

  • ubuntu•linux-gke

    all

  • ubuntu•linux-hwe

    < 4.15.0-99.100~16.04.1 | < 5.3.0-51.44~18.04.2

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all

  • debian•debian_linux

    10.0

  • fedoraproject•fedora

    30 | 31 | 32

  • linux•linux_kernel

    ≥ 4.15, < 4.19.119 | ≥ 4.20, < 5.4.36 | ≥ 5.5, < 5.6.8

  • netapp•a700s_firmware

    na

  • netapp•active_iq_unified_manager

    na

  • netapp•bootstrap_os

    na

  • netapp•cloud_backup

    na

  • netapp•element_software

    na

  • netapp•h300e_firmware

    na

  • netapp•h300s_firmware

    na

  • netapp•h410c_firmware

    na

  • netapp•h410s_firmware

    na

  • netapp•h500e_firmware

    na

  • netapp•h500s_firmware

    na

  • netapp•h610c_firmware

    na

  • netapp•h610s_firmware

    na

  • netapp•h700e_firmware

    na

  • netapp•h700s_firmware

    na

  • netapp•hci_management_node

    na

  • netapp•solidfire

    na

  • netapp•solidfire_baseboard_management_controller_firmware

    na

  • netapp•steelstore_cloud_integrated_storage

    na

References (16)