Executive Summary

Informations
Name CVE-2023-0240 First vendor Publication 2023-01-30
Vendor Cve Last vendor Modification 2023-11-07

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 7.8
Base Score 7.8 Environmental Score 7.8
impact SubScore 5.9 Temporal Score 7.8
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High 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

There is a logic error in io_uring's implementation which can be used to trigger a use-after-free vulnerability leading to privilege escalation.

In the io_prep_async_work function the assumption that the last io_grab_identity call cannot return false is not true, and in this case the function will use the init_cred or the previous linked requests identity to do operations instead of using the current identity. This can lead to reference counting issues causing use-after-free. We recommend upgrading past version 5.10.161.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-0240

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-416 Use After Free

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 3404

Sources (Detail)

Source Url
MISC https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/io_ur...
https://github.com/gregkh/linux/commit/1e6fa5216a0e59ef02e8b6b40d553238a3b81d49
https://kernel.dance/#788d0824269bef539fe31a785b1517882eafed93

Alert History

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Date Informations
2024-03-12 13:32:16
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2024-02-02 02:41:03
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2024-02-01 12:28:38
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2023-12-29 02:30:44
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2023-11-22 02:30:01
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2023-11-07 21:30:25
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2023-09-29 13:24:30
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2023-09-05 13:36:57
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2023-09-05 01:28:00
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2023-09-02 13:34:06
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2023-09-02 01:28:26
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2023-08-12 13:40:48
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2023-08-12 01:27:43
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2023-08-11 13:31:42
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2023-08-11 01:28:35
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2023-08-06 13:29:12
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2023-08-06 01:27:24
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2023-08-04 13:29:39
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2023-08-04 01:27:46
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2023-07-14 13:29:34
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2023-07-14 01:27:27
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2023-06-06 13:18:53
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2023-04-13 02:16:11
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2023-03-29 02:29:21
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2023-03-28 12:27:30
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2023-02-07 00:27:22
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2023-01-30 17:27:14
  • First insertion