Executive Summary

Informations
Name CVE-2024-46851 First vendor Publication 2024-09-27
Vendor Cve Last vendor Modification 2024-10-04

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 4.7
Base Score 4.7 Environmental Score 4.7
impact SubScore 3.6 Temporal Score 4.7
Exploitabality Sub Score 1
 
Attack Vector Local Attack Complexity High
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:

drm/amd/display: Avoid race between dcn10_set_drr() and dc_state_destruct()

dc_state_destruct() nulls the resource context of the DC state. The pipe context passed to dcn10_set_drr() is a member of this resource context.

If dc_state_destruct() is called parallel to the IRQ processing (which calls dcn10_set_drr() at some point), we can end up using already nulled function callback fields of struct stream_resource.

The logic in dcn10_set_drr() already tries to avoid this, by checking tg against NULL. But if the nulling happens exactly after the NULL check and before the next access, then we get a race.

Avoid this by copying tg first to a local variable, and then use this variable for all the operations. This should work, as long as nobody frees the resource pool where the timing generators live.

(cherry picked from commit a3cc326a43bdc48fbdf53443e1027a03e309b643)

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-46851

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-476 NULL Pointer Dereference

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 8
Os 3619

Sources (Detail)

https://git.kernel.org/stable/c/a7aeb03888b92304e2fc7d4d1c242f54a312561b
https://git.kernel.org/stable/c/b6ce047a81f508f5c60756db8dfb5ff486e4dad0
Source Url

Alert History

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Date Informations
2024-10-26 02:57:46
  • Multiple Updates
2024-10-25 02:59:38
  • Multiple Updates
2024-10-23 02:58:50
  • Multiple Updates
2024-10-04 21:27:32
  • Multiple Updates
2024-09-30 17:27:26
  • Multiple Updates
2024-09-27 17:27:23
  • First insertion