Vulnerability Monitor

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CVE-2020-29661

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.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.8, requiring local system access to exploit with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 18 products from linux, from fedoraproject, from debian and 15 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2020-12-09T17:15:31.807

Last Modified

2024-11-21T05:24:23.040

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.8 (HIGH)

CVSSv2 Vector

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

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

3.9

Impact Score

10.0

Weaknesses
  • Type: Primary
    CWE-416
    CWE-667
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System linux linux_kernel < 4.4.248 Yes
Operating System linux linux_kernel < 4.9.248 Yes
Operating System linux linux_kernel < 4.14.212 Yes
Operating System linux linux_kernel < 4.19.163 Yes
Operating System linux linux_kernel < 5.4.83 Yes
Operating System linux linux_kernel < 5.9.14 Yes
Operating System fedoraproject fedora 32 Yes
Operating System fedoraproject fedora 33 Yes
Operating System debian debian_linux 9.0 Yes
Operating System debian debian_linux 10.0 Yes
Application netapp active_iq_unified_manager - Yes
Operating System broadcom fabric_operating_system - Yes
Operating System netapp solidfire_baseboard_management_controller_firmware - Yes
Hardware netapp solidfire_baseboard_management_controller - No
Operating System netapp h410c_firmware - Yes
Hardware netapp h410c - No
Operating System netapp a700s_firmware - Yes
Hardware netapp a700s - No
Operating System netapp 8300_firmware - Yes
Hardware netapp 8300 - No
Operating System netapp 8700_firmware - Yes
Hardware netapp 8700 - No
Operating System netapp a400_firmware - Yes
Hardware netapp a400 - No
Application oracle tekelec_platform_distribution ≤ 7.7.1 Yes
References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For linux's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.