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4 vulnerabilities by gkostka
CVE-2025-70101 (GCVE-0-2025-70101)
Vulnerability from nvd – Published: 2026-06-03 00:00 – Updated: 2026-06-29 19:34
VLAI
Summary
An out-of-bounds read in the ext4_ext_binsearch_idx function in src/ext4_extent.c of the lwext4 1.0.0 library allows attackers to cause a denial of service by supplying a specially crafted ext4 filesystem image. The vulnerability occurs due to insufficient validation of extent header fields before performing a binary search over extent index entries, which can result in invalid pointer calculations and an out-of-bounds memory read during extent tree traversal.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-125 - Out-of-bounds Read
Assigner
References
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"title": "CISA ADP Vulnrichment"
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CVE-2025-70100 (GCVE-0-2025-70100)
Vulnerability from nvd – Published: 2026-06-03 00:00 – Updated: 2026-06-29 19:34
VLAI
Summary
A divide-by-zero vulnerability in the ext4_block_set_lb_size function in src/ext4_blockdev.c of the lwext4 1.0.0 library allows attackers to cause a denial of service by providing a malformed ext4 filesystem image that results in a zero logical block size. The vulnerability is triggered during mount or image processing and leads to a Floating-Point Exception (FPE) under sanitizers or a runtime crash in standard builds due to missing validation of lb_size.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-369 - Divide By Zero
Assigner
References
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CVE-2025-70100 (GCVE-0-2025-70100)
Vulnerability from cvelistv5 – Published: 2026-06-03 00:00 – Updated: 2026-06-29 19:34
VLAI
Summary
A divide-by-zero vulnerability in the ext4_block_set_lb_size function in src/ext4_blockdev.c of the lwext4 1.0.0 library allows attackers to cause a denial of service by providing a malformed ext4 filesystem image that results in a zero logical block size. The vulnerability is triggered during mount or image processing and leads to a Floating-Point Exception (FPE) under sanitizers or a runtime crash in standard builds due to missing validation of lb_size.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-369 - Divide By Zero
Assigner
References
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CVE-2025-70101 (GCVE-0-2025-70101)
Vulnerability from cvelistv5 – Published: 2026-06-03 00:00 – Updated: 2026-06-29 19:34
VLAI
Summary
An out-of-bounds read in the ext4_ext_binsearch_idx function in src/ext4_extent.c of the lwext4 1.0.0 library allows attackers to cause a denial of service by supplying a specially crafted ext4 filesystem image. The vulnerability occurs due to insufficient validation of extent header fields before performing a binary search over extent index entries, which can result in invalid pointer calculations and an out-of-bounds memory read during extent tree traversal.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-125 - Out-of-bounds Read
Assigner
References
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