High severity8.1NVD Advisory· Published Sep 14, 2021· Updated Jun 17, 2026
CVE-2021-41072
CVE-2021-41072
Description
squashfs_opendir in unsquash-2.c in Squashfs-Tools 4.5 allows Directory Traversal, a different vulnerability than CVE-2021-40153. A squashfs filesystem that has been crafted to include a symbolic link and then contents under the same filename in a filesystem can cause unsquashfs to first create the symbolic link pointing outside the expected directory, and then the subsequent write operation will cause the unsquashfs process to write through the symbolic link elsewhere in the filesystem.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
28- cpe:2.3:a:squashfs-tools_project:squashfs-tools:4.5:*:*:*:*:*:*:*
- Squashfs-Tools/Squashfs-Toolsdescription
- Range: <4.5
- osv-coords22 versionspkg:rpm/almalinux/squashfs-toolspkg:rpm/opensuse/squashfs&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/squashfs&distro=openSUSE%20Leap%2015.5pkg:rpm/opensuse/squashfs&distro=openSUSE%20Leap%20Micro%205.3pkg:rpm/opensuse/squashfs&distro=openSUSE%20Leap%20Micro%205.4pkg:rpm/opensuse/squashfs&distro=openSUSE%20Tumbleweedpkg:rpm/suse/squashfs&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/squashfs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-ESPOSpkg:rpm/suse/squashfs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/squashfs&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/squashfs&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/squashfs&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/squashfs&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/squashfs&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/squashfs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4pkg:rpm/suse/squashfs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5pkg:rpm/suse/squashfs&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/squashfs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/squashfs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/squashfs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/squashfs&distro=SUSE%20Manager%20Proxy%204.2pkg:rpm/suse/squashfs&distro=SUSE%20Manager%20Server%204.2
< 4.4-10.git1.el9+ 21 more
- (no CPE)range: < 4.4-10.git1.el9
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.5.1-1.1
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.6.1-8.3.2
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.6.1-8.3.2
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.6.1-150300.3.3.1
- (no CPE)range: < 4.6.1-150300.3.3.1
Patches
Vulnerability mechanics
References
5- github.com/plougher/squashfs-tools/commit/e0485802ec72996c20026da320650d8362f555bdnvdPatchThird Party Advisory
- github.com/plougher/squashfs-tools/issues/72nvdExploitThird Party Advisory
- lists.debian.org/debian-lts-announce/2021/10/msg00017.htmlnvdMailing ListThird Party Advisory
- www.debian.org/security/2021/dsa-4987nvdThird Party Advisory
- security.gentoo.org/glsa/202305-29nvd
News mentions
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