Vulnerability Monitor

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CVE-2021-20321

A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.

Published

2022-02-18T18:15:08.947

Last Modified

2024-11-21T05:46:22.433

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.7 (MEDIUM)

CVSSv2 Vector

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

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

3.4

Impact Score

6.9

Weaknesses
  • Type: Secondary
    CWE-362
  • Type: Primary
    CWE-362
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System linux linux_kernel < 5.15 Yes
Operating System linux linux_kernel 5.15 Yes
Operating System linux linux_kernel 5.15 Yes
Operating System linux linux_kernel 5.15 Yes
Operating System linux linux_kernel 5.15 Yes
Operating System linux linux_kernel 5.15 Yes
Operating System redhat enterprise_linux 7.0 Yes
Operating System redhat enterprise_linux 8.0 Yes
Operating System debian debian_linux 9.0 Yes
Operating System debian debian_linux 10.0 Yes
References