Medium severity5.5NVD Advisory· Published Jun 18, 2026· Updated Jul 14, 2026
CVE-2026-55392
CVE-2026-55392
Description
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.
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Affected products
3- Range: <=2.3.0
- osv-coords2 versionspkg:rpm/opensuse/nilfs-utils&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/nilfs-utils&distro=openSUSE%20Tumbleweed
< 2.2.9-bp160.2.1+ 1 more
- (no CPE)range: < 2.2.9-bp160.2.1
- (no CPE)range: < 2.3.1-1.1
Patches
Vulnerability mechanics
References
2News mentions
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