Executive Summary

Informations
Name CVE-2025-21694 First vendor Publication 2025-02-12
Vendor Cve Last vendor Modification 2025-02-14

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:

fs/proc: fix softlockup in __read_vmcore (part 2)

Since commit 5cbcb62dddf5 ("fs/proc: fix softlockup in __read_vmcore") the number of softlockups in __read_vmcore at kdump time have gone down, but they still happen sometimes.

In a memory constrained environment like the kdump image, a softlockup is not just a harmless message, but it can interfere with things like RCU freeing memory, causing the crashdump to get stuck.

The second loop in __read_vmcore has a lot more opportunities for natural sleep points, like scheduling out while waiting for a data write to happen, but apparently that is not always enough.

Add a cond_resched() to the second loop in __read_vmcore to (hopefully) get rid of the softlockups.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-21694

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 8
Os 3699

Sources (Detail)

https://git.kernel.org/stable/c/649b266606bc413407ce315f710c8ce8a88ee30a
https://git.kernel.org/stable/c/65c367bd9d4f43513c7f837df5753bea9561b836
https://git.kernel.org/stable/c/80828540dad0757b6337c6561d49c81038f38d87
https://git.kernel.org/stable/c/80da29deb88a3a907441fc35bb7bac309f31e713
https://git.kernel.org/stable/c/84c4ed15626574c9ac6c1039ba9c137a77bcc7f2
https://git.kernel.org/stable/c/a5a2ee8144c3897d37403a69118c3e3dc5713958
https://git.kernel.org/stable/c/cbc5dde0a461240046e8a41c43d7c3b76d5db952
Source Url

Alert History

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Date Informations
2025-03-28 03:24:11
  • Multiple Updates
2025-03-25 03:30:04
  • Multiple Updates
2025-03-19 03:18:39
  • Multiple Updates
2025-03-18 03:31:37
  • Multiple Updates
2025-03-14 03:18:39
  • Multiple Updates
2025-03-06 14:15:11
  • Multiple Updates
2025-03-06 03:09:33
  • Multiple Updates
2025-02-22 00:20:38
  • Multiple Updates
2025-02-14 21:20:33
  • Multiple Updates
2025-02-12 17:20:29
  • First insertion