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.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2023-05-31T00:00:00

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

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

Link: CVE-2023-34256

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

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

Modified: 2024-08-02T16:16:11.203

Link: CVE-2023-34256

cve-icon Redhat

No data.