CVE-2021-28951

Advisory lineage Upstream: 0 Downstream: 5
Modified
Published: 20 Mar 2021, 19:53
Last modified:03 Aug 2024, 21:55

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.05% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

20 Mar 2021, 19:53
Published
Vulnerability first disclosed
03 Aug 2024, 21:55
Last Modified
Vulnerability information updated

Description

An issue was discovered in fs/io_uring.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (deadlock) because exit may be waiting to park a SQPOLL thread, but concurrently that SQPOLL thread is waiting for a signal to start, aka CID-3ebba796fa25.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 4.9AV:L/AC:L/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 0.05%• Percentile: 15%

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

  • fedoraproject•fedora

    32 | 33 | 34

  • linux•linux_kernel

    ≤ 5.11.8

  • netapp•a250_firmware

    na

  • netapp•aff_500f_firmware

    na

  • netapp•cloud_backup

    na

  • netapp•fas_500f_firmware

    na

  • netapp•solidfire_baseboard_management_controller_firmware

    na

References (5)