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Fencer Intel
high 7.5

CVE-2015-4646 json

(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 deni…

published 2017-04-13 9 y ago modified 2026-06-17 4 mo ago also EUVD-2015-4665

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.9%
EPSS 6.9% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

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.

Patch / fix

  • squashfs-tools Debian 14, Debian 13, Debian 12 1:4.3-2

debian advisories DEBIAN-CVE-2015-4646

  • squashfs SLE Module for Basesystem 15 SP5, SLE Module for Basesystem 15 SP4, SLE Micro 5.5 +15 more 4.6.1-150300.3.3.1
  • squashfs SLES for SAP 12 SP5, SLES 12 SP5 4.6.1-8.3.2

suse advisories SUSE-SU-2024:2463-1SUSE-SU-2023:4591-1SUSE-SU-2023:4424-1

  • squashfs-tools CBL-Mariner 2.0 4.5-1

azure linux advisories AZL-6885

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-4646 updated cvss 5.1

squashfs-tools: stack overflow in read_fragment_table_4 due to fix for CVE-2015-4645

  • Red Hat Enterprise Linux 5 squashfs-tools Red Hat Enterprise Linux 6 squashfs-tools Red Hat Enterprise Linux 7 squashfs-tools
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

6.91% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.