CVE-2020-29661

Advisory lineage Upstream: 0 Downstream: 55
Modified
Published: 09 Dec 2020, 16:57
Last modified:04 Aug 2024, 16:55

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.59% LOW
1% probability +0.33%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

09 Dec 2020, 16:57
Published
Vulnerability first disclosed
04 Aug 2024, 16:55
Last Modified
Vulnerability information updated

Description

A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v2.0•HIGH•Score: 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.59%• Percentile: 70%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

  • 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

  • broadcom•fabric_operating_system

    na

  • debian•debian_linux

    9.0 | 10.0

  • fedoraproject•fedora

    32 | 33

  • linux•linux_kernel

    ≥ 2.6.26, < 4.4.248 | ≥ 4.5, < 4.9.248 | ≥ 4.10, < 4.14.212 | ≥ 4.15, < 4.19.163 | ≥ 4.20, < 5.4.83 | ≥ 5.5, < 5.9.14

  • netapp•8300_firmware

    na

  • netapp•8700_firmware

    na

  • netapp•a400_firmware

    na

  • netapp•a700s_firmware

    na

  • netapp•active_iq_unified_manager

    na

  • netapp•h410c_firmware

    na

  • netapp•solidfire_baseboard_management_controller_firmware

    na

  • oracle•tekelec_platform_distribution

    ≥ 7.4.0, ≤ 7.7.1

References (11)