nilfs-dev/nilfs-utils

nilfs-dev/nilfs-utils

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nilfs.sourceforge.ionilfs.sourceforge.io
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NILFS utilities
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CVE History

CVEPublishedCVSS v3CVSS v2
CVE-2026-55392↗
5.5 MEDIUM—

NILFS utilities through 2.3.0, fixed in commit 26efb5d, nilfs_sb_is_valid() function fails to validate s_log_block_size field in NILFS2 superblock before bit-shift operations. Attackers supplying crafted NILFS2 images trigger undefined behavior through oversized shifts or out-of-memory conditions, crashing tools like nilfs-tune and dumpseg.