Description
The chain_reply function in process.c in smbd in Samba before 3.4.8 and 3.5.x before 3.5.2 allows remote attackers to cause a denial of service (NULL pointer dereference and process crash) via a Negotiate Protocol request with a certain 0x0003 field value followed by a Session Setup AndX request with a certain 0x8003 field value.
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 | 2:3.6.1-2 | — |
| Debian 13 | samba | 2:3.6.1-2 | — |
| Debian 12 | samba | 2:3.6.1-2 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | samba | 4.5.0-1.1 | openSUSE-SU-2024:10069-1 |
Advisories 1
- openSUSE-SU-2024:10069-1 ctdb-4.5.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- http://git.samba.org/?p=samba.git%3Ba=commit%3Bh=25452a2268ac7013da28125f3df22085139af12d
- http://www.stratsec.net/Research/Advisories/Samba-Multiple-DoS-Vulnerabilities-%28SS-2010-005%29
- http://samba.org/samba/history/samba-3.4.8.html
- MDVSA-2010:141 vendor-advisory
- http://samba.org/samba/history/samba-3.5.2.html
- https://bugzilla.redhat.com/show_bug.cgi?id=594921
- https://bugzilla.samba.org/show_bug.cgi?id=7229
- 40097 vdb-entry
- http://security-tracker.debian.org/tracker/CVE-2010-1635
- ADV-2010-1933 vdb-entry