Medium severity4.3NVD Advisory· Published Feb 21, 2022· Updated Jun 17, 2026
CVE-2021-44141
CVE-2021-44141
Description
All versions of Samba prior to 4.15.5 are vulnerable to a malicious client using a server symlink to determine if a file or directory exists in an area of the server file system not exported under the share definition. SMB1 with unix extensions has to be enabled in order for this attack to succeed.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
88(expand)+ 2 more
- (no CPE)
- (no CPE)range: <4.15.5
- cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*range: <4.15.5
- osv-coords82 versionspkg:rpm/almalinux/ctdbpkg:rpm/almalinux/libsmbclientpkg:rpm/almalinux/libsmbclient-develpkg:rpm/almalinux/libwbclientpkg:rpm/almalinux/libwbclient-develpkg:rpm/almalinux/python3-sambapkg:rpm/almalinux/python3-samba-testpkg:rpm/almalinux/sambapkg:rpm/almalinux/samba-clientpkg:rpm/almalinux/samba-client-libspkg:rpm/almalinux/samba-commonpkg:rpm/almalinux/samba-common-libspkg:rpm/almalinux/samba-testpkg:rpm/almalinux/samba-test-libspkg:rpm/almalinux/samba-vfs-iouringpkg:rpm/almalinux/samba-winbindpkg:rpm/almalinux/samba-winbind-clientspkg:rpm/almalinux/samba-winbind-krb5-locatorpkg:rpm/almalinux/samba-winbind-modulespkg:rpm/almalinux/samba-winexepkg:rpm/suse/apparmor&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/ldb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/sssd&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/tdb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/tevent&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Python%202%2015%20SP3pkg:rpm/suse/apparmor&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP3pkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP3pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP3pkg:rpm/suse/apparmor&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/krb5&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/ldb&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/libapparmor&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/sssd&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/tevent&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/p11-kit&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/ca-certificates&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/apparmor&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/ca-certificates&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/sssd&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/yast2-samba-client&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/talloc&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/talloc-man&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/tevent-man&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/tdb&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/apparmor&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/sssd&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/apparmor&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/gnutls&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/libnettle&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/almalinux/samba-common-toolspkg:rpm/almalinux/samba-develpkg:rpm/almalinux/samba-krb5-printingpkg:rpm/almalinux/samba-libspkg:rpm/almalinux/samba-pidlpkg:rpm/suse/yast2-samba-client&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/talloc&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/sssd&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/gnutls&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/libnettle&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/opensuse/tevent-man&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/apparmor&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/krb5&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/krb5-mini&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/ldb&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/libapparmor&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/samba&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/sssd&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/talloc&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/talloc-man&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/tevent&distro=openSUSE%20Leap%2015.3pkg:rpm/suse/libapparmor&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2012%20SP5pkg:rpm/suse/p11-kit&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/p11-kit&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/opensuse/samba&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/tdb&distro=openSUSE%20Leap%2015.3
< 4.15.5-5.el8+ 81 more
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-8.el8_6
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 2.13.6-150300.3.11.2
- (no CPE)range: < 1.19.2-150300.8.3.2
- (no CPE)range: < 2.4.1-150300.3.10.1
- (no CPE)range: < 4.15.4+git.324.8332acf1a63-150300.3.25.3
- (no CPE)range: < 1.16.1-150300.23.17.3
- (no CPE)range: < 1.4.4-150300.3.3.2
- (no CPE)range: < 0.11.0-150300.3.3.2
- (no CPE)range: < 4.15.4+git.324.8332acf1a63-150300.3.25.3
- (no CPE)range: < 2.13.6-150300.3.11.2
- (no CPE)range: < 1.19.2-150300.8.3.2
- (no CPE)range: < 4.15.4+git.324.8332acf1a63-150300.3.25.3
- (no CPE)range: < 2.13.6-150300.3.11.2
- (no CPE)range: < 1.19.2-150300.8.3.2
- (no CPE)range: < 2.4.1-150300.3.10.1
- (no CPE)range: < 2.13.6-150300.3.11.1
- (no CPE)range: < 1.16.1-150300.23.17.3
- (no CPE)range: < 0.11.0-150300.3.3.2
- (no CPE)range: < 0.23.2-8.3.2
- (no CPE)range: < 4.15.4+git.324.8332acf1a63-3.54.1
- (no CPE)range: < 1_201403302107-15.3.3
- (no CPE)range: < 4.15.4+git.324.8332acf1a63-3.54.1
- (no CPE)range: < 2.8.2-56.6.3
- (no CPE)range: < 1_201403302107-15.3.3
- (no CPE)range: < 1.16.1-7.28.9
- (no CPE)range: < 3.1.23-3.3.1
- (no CPE)range: < 2.3.3-150300.3.3.2
- (no CPE)range: < 2.3.3-150300.3.3.1
- (no CPE)range: < 0.11.0-150300.3.3.1
- (no CPE)range: < 1.4.4-150300.3.3.2
- (no CPE)range: < 2.8.2-56.6.3
- (no CPE)range: < 1.16.1-7.28.9
- (no CPE)range: < 2.8.2-56.6.3
- (no CPE)range: < 3.4.17-8.4.1
- (no CPE)range: < 3.1-21.3.2
- (no CPE)range: < 4.15.4+git.324.8332acf1a63-3.54.1
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 4.15.5-5.el8
- (no CPE)range: < 3.1.23-3.3.1
- (no CPE)range: < 2.3.3-150300.3.3.2
- (no CPE)range: < 1.16.1-7.28.9
- (no CPE)range: < 3.4.17-8.4.1
- (no CPE)range: < 3.1-21.3.2
- (no CPE)range: < 0.11.0-150300.3.3.1
- (no CPE)range: < 2.13.6-150300.3.11.2
- (no CPE)range: < 1.19.2-150300.8.3.2
- (no CPE)range: < 1.19.2-150300.8.3.2
- (no CPE)range: < 2.4.1-150300.3.10.1
- (no CPE)range: < 2.13.6-150300.3.11.1
- (no CPE)range: < 4.15.4+git.324.8332acf1a63-150300.3.25.3
- (no CPE)range: < 1.16.1-150300.23.17.3
- (no CPE)range: < 2.3.3-150300.3.3.2
- (no CPE)range: < 2.3.3-150300.3.3.1
- (no CPE)range: < 0.11.0-150300.3.3.2
- (no CPE)range: < 2.13.6-150300.3.11.1
- (no CPE)range: < 4.15.4+git.324.8332acf1a63-3.54.1
- (no CPE)range: < 0.23.2-8.3.2
- (no CPE)range: < 0.23.2-8.3.2
- (no CPE)range: < 4.15.5+git.328.f1f29505d84-1.1
- (no CPE)range: < 1.4.4-150300.3.3.2
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
2- www.samba.org/samba/security/CVE-2021-44141.htmlnvdMitigationVendor Advisory
- security.gentoo.org/glsa/202309-06nvd
News mentions
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