CVE-2020-10690

 

Published at: - 08-05-2020 05:15

Last modified: - 26-10-2022 01:44

Total changes: - 4

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10690
• https://security.netapp.com/advisory/ntap-20200608-0001/
• [debian-lts-announce] 20200609 [SECURITY] [DLA 2241-1] linux security update-Mailing List, Third Party Advisory
• [debian-lts-announce] 20200610 [SECURITY] [DLA 2241-2] linux security update-Mailing List, Third Party Advisory
• openSUSE-SU-2020:0801-Mailing List, Third Party Advisory
• USN-4419-1-Third Party Advisory

 

Keywords

NVD

 

CVE-2020-10690

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures