Description
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.
Published: 2023-05-31
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-3508-1 linux security update
Debian DLA Debian DLA DLA-3623-1 linux-5.10 security update
Ubuntu USN Ubuntu USN USN-6700-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6700-2 Linux kernel (AWS) vulnerabilities
Ubuntu USN Ubuntu USN USN-6701-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6701-2 Linux kernel (GCP) vulnerabilities
Ubuntu USN Ubuntu USN USN-6701-3 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6701-4 Linux kernel (Azure) vulnerabilities
History

Tue, 11 Mar 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Debian Debian Linux
Linux Linux Kernel
Suse Linux Enterprise
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-03-11T15:34:27.715Z

Reserved: 2023-05-31T00:00:00.000Z

Link: CVE-2023-34256

cve-icon Vulnrichment

Updated: 2024-08-02T16:01:54.343Z

cve-icon NVD

Status : Modified

Published: 2023-05-31T20:15:10.817

Modified: 2025-03-11T16:15:14.927

Link: CVE-2023-34256

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses