CVE-2023-34256

CVE Details

Release Date:2023-05-31

Description


** DISPUTED ** 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.

See more information about CVE-2023-34256 from MITRE CVE dictionary and NIST NVD


CVSS v3.0 metrics


NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score: 5.5 Base Metrics: AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Access Vector: Local network Attack Complexity: Low
Privileges Required: Low User Interaction: None
Scope: Unchanged Confidentiality Impact: None
Integrity Impact: None Availability Impact: High

Errata information


PlatformErrataRelease Date
Oracle Linux version 6 (kernel-uek)ELSA-2023-125652023-07-04
Oracle Linux version 7 (kernel-uek)ELSA-2023-125662023-07-04
Oracle VM version 3 (kernel-uek)OVMSA-2023-00172023-08-03



This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team

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