CVE-2021-40153

squashfs-tools: SquashFS is a highly compressed read-only file system for Linux

CVE-2021-40153 is fixed in squashfs-tools on 1 platform, first by squashfs-tools 1:4.3-6ubuntu0.18.04.3, released August 27, 2021. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
8.1
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0250
84th percentile

SquashFS is a highly compressed read-only file system for Linux. These packages contain the utilities for manipulating squashfs file systems. Security Fix(es): * squashfs-tools: unvalidated filepaths allow writing outside of destination (CVE-2021-40153) * squashfs-tools: possible Directory Traversal via symbolic link (CVE-2021-41072) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.10 Release Notes linked from the References section.

Where it's fixed

ProductFixed inFixReleased
Linux
squashfs-tools · RHEL 8 0:4.3-21.el8 RHSA-2024:3139 May 22, 2024
squashfs-tools · RHEL 9 0:4.4-10.git1.el9 RHSA-2024:2396 Apr 30, 2024
squashfs-tools · Ubuntu 18.04.6 LTS (bionic) 1:4.3-6ubuntu0.18.04.3 squashfs-tools 1:4.3-6ubuntu0.18.04.3 Aug 27, 2021
squashfs-tools · Ubuntu 20.04 LTS (focal) 1:4.4-1ubuntu0.1 squashfs-tools 1:4.4-1ubuntu0.1 Aug 27, 2021
squashfs-tools · almalinux 8 4.3-21.el8 ALSA-2024:3139 May 22, 2024
squashfs-tools · almalinux 9 4.4-10.git1.el9 ALSA-2024:2396 Apr 30, 2024
squashfs-tools · ol 8 0:4.3-21.el8 ELSA-2024-3139 May 23, 2024
squashfs-tools · ol 9 0:4.4-10.git1.el9 ELSA-2024-2396 May 2, 2024
squashfs-tools · rocky 8 0:4.3-21.el8 RLSA-2024:3139 Jun 14, 2024
squashfs-tools · rocky 9 0:4.4-10.git1.el9 RLSA-2024:2396 May 7, 2025

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