Description
MaxQueryDuration not honoured in Samba AD DC LDAP
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | samba | Affects Samba 4.1 and newer. | — |
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 | 2:4.15.9+dfsg-0ubuntu0.2 | USN-5542-1 |
| Ubuntu 20.04 LTS | ldb | 2:2.2.3-0ubuntu0.20.04.3 | — |
| Ubuntu 20.04 LTS | samba | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | USN-5542-1 |
| Ubuntu 18.04 LTS | ldb | No fix yet | — |
| Ubuntu 16.04 LTS | ldb | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | samba | No fix yet | — |
| Ubuntu Pro 16.04 LTS | samba | No fix yet | — |
| Ubuntu Pro 14.04 LTS | ldb +1 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | ldb | 2.4.2-150400.4.3.11 | SUSE-SU-2022:2307-1 |
| SLES 15 SP4 | samba | 4.15.7+git.376.dd43aca9ab2-150400.3.5.3 | SUSE-SU-2022:2307-1 |
| SLES 15 SP3 | ldb | 2.4.2-150300.3.15.1 | SUSE-SU-2022:1576-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 5.2 | ldb | 2.4.2-150300.3.15.1 | SUSE-SU-2022:1576-1 |
| SLE Micro 5.1 | ldb | 2.4.2-150300.3.15.1 | SUSE-SU-2022:1576-1 |
| SUSE Enterprise Storage 7.1 | ldb | 2.4.2-150300.3.15.1 | SUSE-SU-2022:1576-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | ldb | 2.4.2-1.1 | openSUSE-SU-2024:11882-1 |
| openSUSE Leap 15.4 | ldb | 2.4.2-150400.4.3.11 | SUSE-SU-2022:2307-1 |
| openSUSE Leap 15.4 | samba | 4.15.7+git.376.dd43aca9ab2-150400.3.5.3 | SUSE-SU-2022:2307-1 |
| openSUSE Leap 15.3 | ldb | 2.4.2-150300.3.15.1 | SUSE-SU-2022:1576-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | samba | 4.15.9-r0 | — |
| Alpine v3.23 | samba | 4.15.9-r0 | — |
| Alpine v3.22 | samba | 4.15.9-r0 | — |
| Alpine v3.21 | samba | 4.15.9-r0 | — |
| Alpine v3.20 | samba | 4.15.9-r0 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | samba | 4.15.9-r0 | — |
| Alpine v3.18 | samba | 4.15.9-r0 | — |
| Alpine v3.17 | samba | 4.15.9-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | samba | No fix yet | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | libauth-samba | 4.23.2-r0 | — |
Advisories 5
- WID-SEC-2022-0588 Samba: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Aug 31, 2026
- USN-5542-1 samba vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- openSUSE-SU-2024:11882-1 ldb-tools-2.4.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2307-1 Security update for ldb, samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:1576-1 Security update for ldb SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2077533
- https://bugzilla.samba.org/show_bug.cgi?id=14694
- https://gitlab.com/samba-team/samba/-/commit/1d5b155619bc532c46932965b215bd73a920e56f
- https://gitlab.com/samba-team/samba/-/commit/dcfcafdbf756e12d9077ad7920eea25478c29f81
- https://gitlab.com/samba-team/samba/-/commit/86fe9d48883f87c928bf31ccbd275db420386803
- https://gitlab.com/samba-team/samba/-/commit/e1ab0c43629686d1d2c0b0b2bcdc90057a792049
- https://gitlab.com/samba-team/samba/-/commit/2b3af3b560c9617a233c131376c870fce146c002
- https://gitlab.com/samba-team/samba/-/commit/5f0590362c5c0c5ee20503a67467f9be2d50e73b
- https://gitlab.com/samba-team/samba/-/commit/3507e96b3dcf0c0b8eff7b2c08ffccaf0812a393
- https://security.gentoo.org/glsa/202309-06