Executive Summary

Informations
Name CVE-2021-46905 First vendor Publication 2024-02-26
Vendor Cve Last vendor Modification 2024-04-17

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 5.5
Base Score 5.5 Environmental Score 5.5
impact SubScore 3.6 Temporal Score 5.5
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

In the Linux kernel, the following vulnerability has been resolved:

net: hso: fix NULL-deref on disconnect regression

Commit 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device unregistration") fixed the racy minor allocation reported by syzbot, but introduced an unconditional NULL-pointer dereference on every disconnect instead.

Specifically, the serial device table must no longer be accessed after the minor has been released by hso_serial_tty_unregister().

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-46905

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-476 NULL Pointer Dereference

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 3424

Sources (Detail)

https://git.kernel.org/stable/c/0c71d4c89559f72cec2592d078681a843bce570e
https://git.kernel.org/stable/c/0f000005da31f6947f843ce6b3e3a960540c6e00
https://git.kernel.org/stable/c/24b699bea7553fc0b98dad9d864befb6005ac7f1
https://git.kernel.org/stable/c/2ad5692db72874f02b9ad551d26345437ea4f7f3
https://git.kernel.org/stable/c/41c44e1f3112d7265dae522c026399b2a42d19ef
https://git.kernel.org/stable/c/5871761c5f0f20d6e98bf3b6bd7486d857589554
https://git.kernel.org/stable/c/5c17cfe155d21954b4c7e2a78fa771cebcd86725
https://git.kernel.org/stable/c/90642ee9eb581a13569b1c0bd57e85d962215273
https://git.kernel.org/stable/c/d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e
Source Url

Alert History

If you want to see full details history, please login or register.
0
1
2
Date Informations
2024-04-18 00:27:48
  • Multiple Updates
2024-04-04 21:27:25
  • Multiple Updates
2024-02-26 21:27:26
  • First insertion