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Slackware Samba Important DoS LDAP Issues Fix SSA-2026-209

Linuxsecurity •LinuxSecurity Advisories • July 29, 2026

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Here are the details from the Slackware 15.0 ChangeLog: extra/samba-4.22.11-i586-1_slack15.0.txz: Upgraded. This is a security release in order to address the following defects: TSIG packet with name compression can crash DNS. An authenticated user could possibly crash a KDC process. DNS signing DoS via TKEY name cache exhaustion. Samba AD authenticated LDAP access domain takeover. Samba AD LDAP Compare filter injection and trusted-request confusion discloses protected attributes. The CTDB protocol has bounds checking issues. For more information, see:

Thanks to the friendly folks at the OSU Open Source Lab ( for donating FTP and rsync hosting to the Slackware project! :-) Also see the "Get Slack" section on for additional mirror sites near you. Updated package for Slackware 15.0: ftp://ftp.slackware.com/pub/slackware/slackware-15.0/extra/samba-4.22.11-i586-1_slack15.0.txz Updated package for Slackware x86_64 15.0: ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/extra/samba-4.22.11-x86_64-1_slack15.0.txz Updated package for Slackware -current: ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/samba-4.24.5-i686-1.txz Updated package for Slackware x86_64 -current: ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/samba-4.24.5-x86_64-1.txz

Slackware 15.0 package: 4653e2cac63253eba04ad0d9fd9c6762 samba-4.22.11-i586-1_slack15.0.txz Slackware x86_64 15.0 package: 8071478017d3ffb06bee38cd4d6c3cea samba-4.22.11-x86_64-1_slack15.0.txz Slackware -current package: a1f1feaf0e6e9c77524a12e03bf3b85b n/samba-4.24.5-i686-1.txz Slackware x86_64 -current package: 17a74bfc598d765317f5d36707a08826 n/samba-4.24.5-x86_64-1.txz

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Installation instructions: Upgrade the package as root: # upgradepkg samba-4.22.11-i586-1_slack15.0.txz Then, if Samba is running restart it: # /etc/rc.d/rc.samba restart

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Multiple Critical Vulnerabilities Discovered in Samba Affecting Unix Systems A series of vulnerabilities have been identified in Samba, impacting Unix systems and allowing local and remote attackers to exploit them. Key issues include improper handling of directory ownership by the pam_winbind module (CVE-2026-15779), which can lead to denial of service by changing ownership of critical directories. Additionally, flaws in TSIG packet handling (CVE-2026-6949) can cause crashes in the internal DNS server, while malformed ASN.1 kpasswd packets (CVE-2026-58216) can also result in denial of service. These vulnerabilities affect various distributions, including Ubuntu and openSUSE, prompting urgent patch releases. The vulnerabilities were confirmed by multiple security advisories and pose significant risks to system integrity and availability. System administrators are advised to apply the latest patches immediately to mitigate these risks. 9 sources 72

Extracted Entities

Slackware Samba Important DoS LDAP Issues Fix SSA-2026-209

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Extracted Entities

Attack Types (1)

CWE Weaknesses (1)

Domains (1)

MD5 Hashes (4)

Platforms (2)