Executive Summary

Informations
Name CVE-2024-44956 First vendor Publication 2024-09-04
Vendor Cve Last vendor Modification 2024-09-06

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:

drm/xe/preempt_fence: enlarge the fence critical section

It is really easy to introduce subtle deadlocks in preempt_fence_work_func() since we operate on single global ordered-wq for signalling our preempt fences behind the scenes, so even though we signal a particular fence, everything in the callback should be in the fence critical section, since blocking in the callback will prevent other published fences from signalling. If we enlarge the fence critical section to cover the entire callback, then lockdep should be able to understand this better, and complain if we grab a sensitive lock like vm->lock, which is also held when waiting on preempt fences.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-44956

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-667 Insufficient Locking

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 8
Os 3599

Sources (Detail)

https://git.kernel.org/stable/c/3cd1585e57908b6efcd967465ef7685f40b2a294
https://git.kernel.org/stable/c/458bb83119dfee5d14c677f7846dd9363817006f
Source Url

Alert History

If you want to see full details history, please login or register.
0
1
2
3
4
5
6
Date Informations
2024-10-03 02:53:31
  • Multiple Updates
2024-10-02 02:51:55
  • Multiple Updates
2024-09-14 21:29:53
  • Multiple Updates
2024-09-12 00:27:31
  • Multiple Updates
2024-09-06 21:27:43
  • Multiple Updates
2024-09-05 17:27:25
  • Multiple Updates
2024-09-05 00:27:26
  • First insertion