CVE-2021-26708

Advisory lineage Upstream: 0 Downstream: 9
Modified
Published: 05 Feb 2021, 07:41
Last modified:03 Aug 2024, 20:33

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7 HIGH
v3.1 (nvd)
EPSS Score
0.94% LOW
1% probability -0.31%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

05 Feb 2021, 07:41
Published
Vulnerability first disclosed
03 Aug 2024, 20:33
Last Modified
Vulnerability information updated

Description

A local privilege escalation was discovered in the Linux kernel before 5.10.13. Multiple race conditions in the AF_VSOCK implementation are caused by wrong locking in net/vmw_vsock/af_vsock.c. The race conditions were implicitly introduced in the commits that added VSOCK multi-transport support.

CVSS Metrics

  • v3.1•HIGH•Score: 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 6.9AV:L/AC:M/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.94%• Percentile: 77%

Techniques & Countermeasures

  • CWE-667•Improper Locking

    The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

Affected Systems

  • linux•linux_kernel

    ≥ 5.5, < 5.10.13

  • netapp•aff_baseboard_management_controller

    na

  • netapp•baseboard_management_controller_500f_firmware

    < 15.3

  • netapp•baseboard_management_controller_a250_firmware

    < 15.3

  • netapp•cloud_backup

    na

  • netapp•fas_baseboard_management_controller

    na

  • netapp•hci_h410c_firmware

    na

  • netapp•solidfire_\&_hci_management_node

    na

  • netapp•solidfire_baseboard_management_controller_firmware

    na

References (7)