UBUNTU-CVE-2020-10690

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2020-10690
Downstream
USN-4419-1
Published: 08 May 2020, 15:15
Last modified:03 Jun 2026, 13:34

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.4 MEDIUM
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

08 May 2020, 15:15
Published
Vulnerability first disclosed
03 Jun 2026, 13:34
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: 6.4CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • 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-nvidia

    all

  • 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

References (5)