Vulnerability Monitor

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CVE-2020-10690

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.

Published

2020-05-08T15:15:11.880

Last Modified

2024-11-21T04:55:51.727

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

AV:L/AC:M/Au:N/C:P/I:P/A:P

  • Access Vector: LOCAL
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

3.4

Impact Score

6.4

Weaknesses
  • Type: Secondary
    CWE-416
  • Type: Primary
    CWE-416
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System linux linux_kernel < 5.5 Yes
Operating System redhat enterprise_linux 7.0 Yes
Operating System redhat enterprise_linux 8.0 Yes
Operating System debian debian_linux 8.0 Yes
Operating System canonical ubuntu_linux 14.04 Yes
Operating System canonical ubuntu_linux 16.04 Yes
Operating System opensuse leap 15.1 Yes
Application netapp active_iq_unified_manager - Yes
Application netapp element_software - Yes
Application netapp hci_management_node - Yes
Application netapp solidfire - Yes
Application netapp steelstore_cloud_integrated_storage - Yes
Hardware netapp hci_compute_node - Yes
Operating System netapp h300s_firmware - Yes
Hardware netapp h300s - No
Operating System netapp h500s_firmware - Yes
Hardware netapp h500s - No
Operating System netapp h700s_firmware - Yes
Hardware netapp h700s - No
Operating System netapp h300e_firmware - Yes
Hardware netapp h300e - No
Operating System netapp h500e_firmware - Yes
Hardware netapp h500e - No
Operating System netapp h700e_firmware - Yes
Hardware netapp h700e - No
Operating System netapp h410s_firmware - Yes
Hardware netapp h410s - No
Operating System netapp h410c_firmware - Yes
Hardware netapp h410c - No
Operating System netapp h610c_firmware - Yes
Hardware netapp h610c - No
Operating System netapp h610s_firmware - Yes
Hardware netapp h610s - No
Operating System netapp h615c_firmware - Yes
Hardware netapp h615c - No
References