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CVE-2021-46905 Detail

Description

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().


Severity



CVSS 4.0 Severity and Metrics:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.

References to Advisories, Solutions, and Tools

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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-476 NULL Pointer Dereference cwe source acceptance level NIST  

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-46905
NVD Published Date:
02/26/2024
NVD Last Modified:
04/17/2024
Source:
kernel.org