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.
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Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-2241-1 | linux security update |
Debian DLA |
DLA-2241-2 | linux security update |
EUVD |
EUVD-2020-3124 | 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. |
Ubuntu USN |
USN-4419-1 | Linux kernel vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
No history.
Projects
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2024-08-04T11:06:11.142Z
Reserved: 2020-03-20T00:00:00
Link: CVE-2020-10690
No data.
Status : Modified
Published: 2020-05-08T15:15:11.880
Modified: 2024-11-21T04:55:51.727
Link: CVE-2020-10690
OpenCVE Enrichment
No data.
Weaknesses
Debian DLA
EUVD
Ubuntu USN