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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Samba | All versions of Samba prior to 4.15.5 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | samba | 2:4.16.0+dfsg-2 | — |
| Debian 13 | samba | 2:4.16.0+dfsg-2 | — |
| Debian 12 | samba | 2:4.16.0+dfsg-2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | samba | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | samba | No fix yet | — |
| Ubuntu Pro 18.04 LTS | samba | No fix yet | — |
| Ubuntu Pro 16.04 LTS | samba | No fix yet | — |
| Ubuntu Pro 14.04 LTS | samba | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | ctdb +24 | 4.15.5-5.el8 | RHSA-2022:2074 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Gluster Storage 3 | ctdb +20 | 4.15.5-100.el8rhgs | RHSA-2022:1756 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | ctdb +24 | 4.15.5-5.el8 | ALSA-2022:2074 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | samba | 4.15.5-5.el8 | RLSA-2022:2074 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | apparmor | 2.13.6-150300.3.11.2 | SUSE-SU-2022:0283-1 |
| SLES 15 SP3 | krb5 | 1.19.2-150300.8.3.2 | SUSE-SU-2022:0283-1 |
| SLES 15 SP3 | ldb | 2.4.1-150300.3.10.1 | SUSE-SU-2022:0283-1 |
| SLES 15 SP3 | libapparmor | 2.13.6-150300.3.11.1 | SUSE-SU-2022:0283-1 |
| SLES 15 SP3 | samba | 4.15.4+git.324.8332acf1a63-150300.3.25.3 | SUSE-SU-2022:0283-1 |
| SLES 15 SP3 | sssd | 1.16.1-150300.23.17.3 | SUSE-SU-2022:0283-1 |
| SLES 15 SP3 | talloc | 2.3.3-150300.3.3.2 | SUSE-SU-2022:0283-1 |
| SLES 15 SP3 | talloc-man | 2.3.3-150300.3.3.1 | SUSE-SU-2022:0283-1 |
| SLES 15 SP3 | tdb | 1.4.4-150300.3.3.2 | SUSE-SU-2022:0283-1 |
| SLES 15 SP3 | tevent | 0.11.0-150300.3.3.2 | SUSE-SU-2022:0283-1 |
| SLES 15 SP3 | tevent-man | 0.11.0-150300.3.3.1 | SUSE-SU-2022:0283-1 |
| SLES 12 SP5 | apparmor | 2.8.2-56.6.3 | SUSE-SU-2022:0323-1 |
| SLES 12 SP5 | ca-certificates | 1_201403302107-15.3.3 | SUSE-SU-2022:0323-1 |
| SLES 12 SP5 | gnutls | 3.4.17-8.4.1 | SUSE-SU-2022:0323-1 |
| SLES 12 SP5 | libnettle | 3.1-21.3.2 | SUSE-SU-2022:0323-1 |
| SLES 12 SP5 | p11-kit | 0.23.2-8.3.2 | SUSE-SU-2022:0323-1 |
| SLES 12 SP5 | samba | 4.15.4+git.324.8332acf1a63-3.54.1 | SUSE-SU-2022:0323-1 |
| SLES 12 SP5 | sssd | 1.16.1-7.28.9 | SUSE-SU-2022:0323-1 |
| SLES 12 SP5 | yast2-samba-client | 3.1.23-3.3.1 | SUSE-SU-2022:0323-1 |
| SLES 2 | samba | 4.15.4+git.324.8332acf1a63-150300.3.25.3 | SUSE-SU-2022:0283-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | apparmor | 2.8.2-56.6.3 | SUSE-SU-2022:0323-1 |
| SLES for SAP 12 SP5 | ca-certificates | 1_201403302107-15.3.3 | SUSE-SU-2022:0323-1 |
| SLES for SAP 12 SP5 | gnutls | 3.4.17-8.4.1 | SUSE-SU-2022:0323-1 |
| SLES for SAP 12 SP5 | libnettle | 3.1-21.3.2 | SUSE-SU-2022:0323-1 |
| SLES for SAP 12 SP5 | p11-kit | 0.23.2-8.3.2 | SUSE-SU-2022:0323-1 |
| SLES for SAP 12 SP5 | samba | 4.15.4+git.324.8332acf1a63-3.54.1 | SUSE-SU-2022:0323-1 |
| SLES for SAP 12 SP5 | sssd | 1.16.1-7.28.9 | SUSE-SU-2022:0323-1 |
| SLES for SAP 12 SP5 | yast2-samba-client | 3.1.23-3.3.1 | SUSE-SU-2022:0323-1 |
| SLE Micro 5.1 | apparmor | 2.13.6-150300.3.11.2 | SUSE-SU-2022:0283-1 |
| SLE Micro 5.1 | krb5 | 1.19.2-150300.8.3.2 | SUSE-SU-2022:0283-1 |
| SLE Micro 5.1 | ldb | 2.4.1-150300.3.10.1 | SUSE-SU-2022:0283-1 |
| SLE Micro 5.1 | libapparmor | 2.13.6-150300.3.11.1 | SUSE-SU-2022:0283-1 |
| SLE Micro 5.1 | sssd | 1.16.1-150300.23.17.3 | SUSE-SU-2022:0283-1 |
| SLE Micro 5.1 | talloc | 2.3.3-150300.3.3.2 | SUSE-SU-2022:0283-1 |
| SLE Micro 5.1 | tdb | 1.4.4-150300.3.3.2 | SUSE-SU-2022:0283-1 |
| SLE Micro 5.1 | tevent | 0.11.0-150300.3.3.2 | SUSE-SU-2022:0283-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | samba | 4.15.5+git.328.f1f29505d84-1.1 | openSUSE-SU-2024:11807-1 |
| openSUSE Leap 15.3 | apparmor | 2.13.6-150300.3.11.2 | openSUSE-SU-2022:0283-1 |
| openSUSE Leap 15.3 | krb5 +1 | 1.19.2-150300.8.3.2 | openSUSE-SU-2022:0283-1 |
| openSUSE Leap 15.3 | ldb | 2.4.1-150300.3.10.1 | openSUSE-SU-2022:0283-1 |
| openSUSE Leap 15.3 | libapparmor | 2.13.6-150300.3.11.1 | openSUSE-SU-2022:0283-1 |
| openSUSE Leap 15.3 | samba | 4.15.4+git.324.8332acf1a63-150300.3.25.3 | openSUSE-SU-2022:0283-1 |
| openSUSE Leap 15.3 | sssd | 1.16.1-150300.23.17.3 | openSUSE-SU-2022:0283-1 |
| openSUSE Leap 15.3 | talloc | 2.3.3-150300.3.3.2 | openSUSE-SU-2022:0283-1 |
| openSUSE Leap 15.3 | talloc-man | 2.3.3-150300.3.3.1 | openSUSE-SU-2022:0283-1 |
| openSUSE Leap 15.3 | tdb | 1.4.4-150300.3.3.2 | openSUSE-SU-2022:0283-1 |
| openSUSE Leap 15.3 | tevent | 0.11.0-150300.3.3.2 | openSUSE-SU-2022:0283-1 |
| openSUSE Leap 15.3 | tevent-man | 0.11.0-150300.3.3.1 | openSUSE-SU-2022:0283-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.16 | samba | 4.15.5-r0 | — |
| Alpine v3.15 | samba | 4.15.5-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | samba +29 | 2:4.17.5-0.amzn2023.0.2 | ALAS2023-2023-032 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | samba | 4.18.3-1 | — |
| Azure Linux 2 (CBL-Mariner) | samba | No fix yet | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | ctdb +24 | 4.15.5-5.el8 | ELSA-2022-2074 |
Advisories 11
- ALSA-2022:2074 Moderate: samba security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2022:2074 Red Hat Security Advisory: samba security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RLSA-2022:2074 Moderate: samba security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 5, 2026
- openSUSE-SU-2022:0283-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0283-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0323-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11807-1 ctdb-4.15.5+git.328.f1f29505d84-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2022:1756 Red Hat Security Advisory: samba security, bug fix and enhancement update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- ALAS2023-2023-032 Important: samba security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Feb 15, 2024
- WID-SEC-2022-0466 Samba: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 21, 2023
- ELSA-2022-2074 Moderate: samba security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 17, 2022