Executive Summary

Informations
Name CVE-2023-34256 First vendor Publication 2023-05-31
Vendor Cve Last vendor Modification 2024-04-11

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

An issue was discovered in the Linux kernel before 6.3.3. There is an out-of-bounds read in crc16 in lib/crc16.c when called from fs/ext4/super.c because ext4_group_desc_csum does not properly check an offset. NOTE: this is disputed by third parties because the kernel is not intended to defend against attackers with the stated "When modifying the block device while it is mounted by the filesystem" access.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-34256

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-125 Out-of-bounds Read

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 8
Os 1
Os 3532
Os 3

Sources (Detail)

Source Url
MISC https://bugzilla.suse.com/show_bug.cgi?id=1211895
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.3
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id...
https://syzkaller.appspot.com/bug?extid=8785e41224a3afd04321
MLIST https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html

Alert History

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Date Informations
2024-04-11 09:28:01
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2024-03-21 09:28:04
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2024-03-12 13:38:40
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2024-02-02 02:46:39
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2024-02-01 12:30:22
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2024-01-12 02:38:26
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2023-12-29 02:35:51
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2023-11-22 02:34:31
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2023-11-15 09:28:02
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2023-11-07 21:28:54
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2023-10-20 09:28:02
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2023-09-29 13:28:39
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2023-09-05 13:41:23
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2023-09-05 01:29:30
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2023-09-02 13:39:29
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2023-09-02 01:29:57
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2023-08-12 13:44:44
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2023-08-12 01:29:11
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2023-08-11 13:36:47
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2023-08-11 01:30:04
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2023-08-06 13:33:24
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2023-08-06 01:28:49
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2023-08-04 05:27:49
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2023-08-04 01:29:13
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2023-08-02 09:28:12
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2023-07-28 00:27:40
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2023-07-21 02:27:00
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2023-07-14 13:33:29
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2023-07-14 01:28:45
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2023-07-06 02:24:05
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2023-06-07 21:27:19
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2023-06-05 21:27:15
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2023-06-01 09:27:25
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2023-06-01 02:18:00
  • First insertion