(1) unsquash-1.c, (2) unsquash-2.c, (3) unsquash-3.c, and (4) unsquash-4.c in Squashfs…
Priority MEDIUM 43CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
(1) unsquash-1.c, (2) unsquash-2.c, (3) unsquash-3.c, and (4) unsquash-4.c in Squashfs and sasquatch allow remote attackers to cause a denial of service (application crash) via a crafted input.
Why it matters now
EPSS 0.0691 94th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:squashfs_project:squashfs:*:*:*:*:*:*:*:* | up to 4.3 | Vulnerable | Squashfs Project |
- cpe:2.3:a:squashfs_project:squashfs:*:*:*:*:*:*:*:* Versions up to 4.3 Vulnerable ·Squashfs Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2015-4646
- 2026-10-03 Alias added: GHSA-m77j-hm9g-ppq8
References
More Squashfs Project Squashfs vulnerabilities
- TI-2012-03445 Integer overflow in the queue_init function in unsquashfs.c in unsquashfs in Squashfs 4.2… CVSS 2.0MEDIUM 6.8
- TI-2012-03444 Stack-based buffer overflow in the get_component function in unsquashfs.c in unsquashfs… CVSS 2.0MEDIUM 6.8
- TI-2015-03887 Integer overflow in the read_fragment_table_4 function in unsquash-4.c in Squashfs and… CVSS 3.1MEDIUM 5.5
Sources
- CVE-2015-4646 · CVE Program
- CVE-2015-4646 · NVD
- FIRST EPSS
- GHSA-m77j-hm9g-ppq8 · GitHub Advisory Database · CC BY 4.0
- CVE-2015-4646 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences