cvedb.io
CVE-2023-34256
MEDIUM · CVSS 5.5
EPSS exploitation probability: 0%
Published 2023-05-31T20:15:10.817 · Last modified 2026-06-17T06:03:14.030

Summary

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.

Affected products

linux — linux_kernel

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.