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2 vulnerabilities by nilfs-dev
CVE-2026-55392 (GCVE-0-2026-55392)
Vulnerability from nvd – Published: 2026-06-18 18:00 – Updated: 2026-06-18 18:58 X_Open Source
VLAI
EPSS
VEX
Title
NILFS utilities - Undefined Behavior and Out-of-Memory via Unvalidated s_log_block_size
Summary
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.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/nilfs-dev/nilfs-utils/issues/26 | issue-tracking |
| https://github.com/nilfs-dev/nilfs-utils/commit/2… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nilfs-dev | nilfs-utils |
Affected:
0 , ≤ 2.3.0
(semver)
Unaffected: 26efb5daff0757365101035145331b0a5a85d9d9 (git) |
Date Public
2026-06-10 00:00
Credits
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CVE-2026-55392 (GCVE-0-2026-55392)
Vulnerability from cvelistv5 – Published: 2026-06-18 18:00 – Updated: 2026-06-18 18:58 X_Open Source
VLAI
EPSS
VEX
Title
NILFS utilities - Undefined Behavior and Out-of-Memory via Unvalidated s_log_block_size
Summary
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.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/nilfs-dev/nilfs-utils/issues/26 | issue-tracking |
| https://github.com/nilfs-dev/nilfs-utils/commit/2… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nilfs-dev | nilfs-utils |
Affected:
0 , ≤ 2.3.0
(semver)
Unaffected: 26efb5daff0757365101035145331b0a5a85d9d9 (git) |
Date Public
2026-06-10 00:00
Credits
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