Executive Summary

Informations
Name CVE-2024-50142 First vendor Publication 2024-11-07
Vendor Cve Last vendor Modification 2024-11-22

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:

xfrm: validate new SA's prefixlen using SA family when sel.family is unset

This expands the validation introduced in commit 07bf7908950a ("xfrm: Validate address prefix lengths in the xfrm selector.")

syzbot created an SA with
usersa.sel.family = AF_UNSPEC
usersa.sel.prefixlen_s = 128
usersa.family = AF_INET

Because of the AF_UNSPEC selector, verify_newsa_info doesn't put limits on prefixlen_{s,d}. But then copy_from_user_state sets x->sel.family to usersa.family (AF_INET). Do the same conversion in verify_newsa_info before validating prefixlen_{s,d}, since that's how prefixlen is going to be used later on.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-50142

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 8
Os 3641

Sources (Detail)

https://git.kernel.org/stable/c/2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71
https://git.kernel.org/stable/c/3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563
https://git.kernel.org/stable/c/401ad99a5ae7180dd9449eac104cb755f442e7f3
https://git.kernel.org/stable/c/7d9868180bd1e4cf37e7c5067362658971162366
https://git.kernel.org/stable/c/8df5cd51fd70c33aa1776e5cbcd82b0a86649d73
https://git.kernel.org/stable/c/bce1afaa212ec380bf971614f70909a27882b862
https://git.kernel.org/stable/c/e68dd80ba498265d2266b12dc3459164f4ff0c4a
https://git.kernel.org/stable/c/f31398570acf0f0804c644006f7bfa9067106b0a
Source Url

Alert History

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0
1
2
Date Informations
2024-11-22 21:22:06
  • Multiple Updates
2024-11-08 21:27:29
  • Multiple Updates
2024-11-07 13:27:34
  • First insertion