CVE-2020-10690

Aliases:UBUNTU-CVE-2020-10690DEBIAN-CVE-2020-10690
Advisory lineage Upstream: 0 Downstream: 22
Modified
Published: 08 May 2020, 13:48
Last modified:04 Aug 2024, 11:06

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
v3.1 (cve.org)
EPSS Score
0.36% LOW
0% probability +0.23%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

08 May 2020, 13:48
Published
Vulnerability first disclosed
04 Aug 2024, 11:06
Last Modified
Vulnerability information updated

Description

There is a use-after-free in kernel versions before 5.5 due to a race condition between the release of ptp_clock and cdev while resource deallocation. When a (high privileged) process allocates a ptp device file (like /dev/ptpX) and voluntarily goes to sleep. During this time if the underlying device is removed, it can cause an exploitable condition as the process wakes up to terminate and clean all attached files. The system crashes due to the cdev structure being invalid (as already freed) which is pointed to by the inode.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
  • v3.1•MEDIUM•Score: 6.4CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 4.4AV:L/AC:M/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 0.36%• Percentile: 30%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • canonical•ubuntu_linux

    14.04 | 16.04

  • debian•linux

    < 5.4.8-1 | < 5.4.8-1 | < 5.4.8-1 | < 5.4.8-1

  • ubuntu•linux

    all | < 4.4.0-185.215 | < 4.15.0-88.88

  • ubuntu•linux-aws

    < 4.4.0-1074.78 | < 4.4.0-1110.121 | < 4.15.0-1060.62

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-fips

    < 4.15.0-2018.18 | all

  • ubuntu•linux-aws-hwe

    < 4.15.0-1060.62~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1071.76~14.04.1 | < 4.15.0-1071.76 | all

  • ubuntu•linux-azure-5.3

    < 5.3.0-1013.14~18.04.1

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2006.7 | all

  • ubuntu•linux-bluefield

    all

  • ubuntu•linux-fips

    < 4.4.0-1042.47 | all

  • ubuntu•linux-gcp

    < 4.15.0-1055.59 | all

  • ubuntu•linux-gcp-5.3

    < 5.3.0-1012.13~18.04.1

  • ubuntu•linux-gcp-edge

    all

  • ubuntu•linux-gcp-fips

    all

  • ubuntu•linux-gke

    all

  • ubuntu•linux-gke-4.15

    < 4.15.0-1052.55

  • ubuntu•linux-gke-5.0

    < 5.0.0-1030.31

  • ubuntu•linux-gke-5.3

    < 5.3.0-1012.13~18.04.1

  • ubuntu•linux-hwe

    < 4.15.0-88.88~16.04.1 | < 5.3.0-40.32~18.04.1

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1076.83 | < 4.15.0-1053.53

  • ubuntu•linux-lts-xenial

    < 4.4.0-185.215~14.04.1

  • ubuntu•linux-oem

    < 4.15.0-1073.83

  • ubuntu•linux-oem-osp1

    < 5.0.0-1039.44

  • ubuntu•linux-oracle

    < 4.15.0-1033.36~16.04.1 | < 4.15.0-1033.36

  • ubuntu•linux-oracle-5.0

    all

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    < 4.4.0-1135.144 | < 4.15.0-1055.59 | all

  • ubuntu•linux-raspi2-5.3

    < 5.3.0-1018.20~18.04.1

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all

  • ubuntu•linux-snapdragon

    < 4.4.0-1139.147 | < 4.15.0-1072.79

  • debian•debian_linux

    8.0

  • linux•linux_kernel

    < 5.5

  • netapp•active_iq_unified_manager

    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•h615c_firmware

    na

Showing first 50 affected entries in server-rendered view.

References (11)