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samba vulnerabilities (CVE-2026-6949)

0
Unknown
VulnerabilityCVE-2026-6949gcveosvubuntu-cve-2026-6949ubuntu-pro-14-04-ltsubuntu-pro-16-04-ltsubuntu-pro-18-04-ltsubuntu-pro-20-04-ltsubuntu-22-04-ltsubuntu-24-04-ltsubuntu-26-04-ltsusn-8621-1cve-2026-6949
Published: 07/28/2026 (07/28/2026, 11:50:00 UTC)
Source: GCVE Database
Product: samba

Description

It was discovered that Samba's pam_winbind incorrectly handled home directory ownership when mkhomedir was enabled. A local attacker could possibly use this issue to cause a denial of service by triggering a change in ownership of the root directory. (CVE-2026-15779) Arjun Basnet, Douglas Bagnall, and Andrew Tridgell discovered that Samba incorrectly handled TSIG packets with name compression. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2026-6949) Tristan Madani discovered that Samba incorrectly handled malformed ASN.1 kpasswd packets. An authenticated user could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2026-58216) Andrew Tridgell and Tristan Madani discovered that Samba incorrectly handled TKEY name registration. A remote attacker could possibly use this issue to exhaust the TKEY name cache, resulting in a denial of service. (CVE-2026-58218) It was discovered that Samba incorrectly handled internal LDB special directory names when processing authenticated LDAP requests. An authenticated user could possibly use this issue to perform unauthorized modifications and gain control of a domain. (CVE-2026-58221) Andrew Tridgell and Tristan Madani discovered that Samba incorrectly handled LDAP Compare requests. An authenticated user could possibly use this issue to obtain sensitive information. (CVE-2026-58222) Tristan Madani, Andrew Tridgell, and Martin Schwenke discovered that the CTDB protocol in Samba had insufficient bounds checking. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2026-58224)

Affected software

Ubuntu:Pro:14.04:LTSmore threats →ghsa
samba
pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15?arch=source&distro=esm-infra-legacy/trusty
Affected versions
=2:3.6.18-1ubuntu3=2:4.0.10+dfsg-4ubuntu2=2:4.0.13+dfsg-1ubuntu1=2:4.1.3+dfsg-2ubuntu2=2:4.1.3+dfsg-2ubuntu3=2:4.1.3+dfsg-2ubuntu4=2:4.1.3+dfsg-2ubuntu5=2:4.1.6+dfsg-1ubuntu1=2:4.1.6+dfsg-1ubuntu2=2:4.1.6+dfsg-1ubuntu2.14.04.1=2:4.1.6+dfsg-1ubuntu2.14.04.2=2:4.1.6+dfsg-1ubuntu2.14.04.3=2:4.1.6+dfsg-1ubuntu2.14.04.4=2:4.1.6+dfsg-1ubuntu2.14.04.5=2:4.1.6+dfsg-1ubuntu2.14.04.7=2:4.1.6+dfsg-1ubuntu2.14.04.8=2:4.1.6+dfsg-1ubuntu2.14.04.9=2:4.1.6+dfsg-1ubuntu2.14.04.11=2:4.1.6+dfsg-1ubuntu2.14.04.12=2:4.1.6+dfsg-1ubuntu2.14.04.13=2:4.3.8+dfsg-0ubuntu0.14.04.2=2:4.3.9+dfsg-0ubuntu0.14.04.1=2:4.3.9+dfsg-0ubuntu0.14.04.3=2:4.3.11+dfsg-0ubuntu0.14.04.1=2:4.3.11+dfsg-0ubuntu0.14.04.2=2:4.3.11+dfsg-0ubuntu0.14.04.3=2:4.3.11+dfsg-0ubuntu0.14.04.4=2:4.3.11+dfsg-0ubuntu0.14.04.6=2:4.3.11+dfsg-0ubuntu0.14.04.7=2:4.3.11+dfsg-0ubuntu0.14.04.8=2:4.3.11+dfsg-0ubuntu0.14.04.9=2:4.3.11+dfsg-0ubuntu0.14.04.10=2:4.3.11+dfsg-0ubuntu0.14.04.11=2:4.3.11+dfsg-0ubuntu0.14.04.12=2:4.3.11+dfsg-0ubuntu0.14.04.13=2:4.3.11+dfsg-0ubuntu0.14.04.14=2:4.3.11+dfsg-0ubuntu0.14.04.16=2:4.3.11+dfsg-0ubuntu0.14.04.17=2:4.3.11+dfsg-0ubuntu0.14.04.19=2:4.3.11+dfsg-0ubuntu0.14.04.20=2:4.3.11+dfsg-0ubuntu0.14.04.20+esm1=2:4.3.11+dfsg-0ubuntu0.14.04.20+esm2=2:4.3.11+dfsg-0ubuntu0.14.04.20+esm3=2:4.3.11+dfsg-0ubuntu0.14.04.20+esm4=2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6=2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7=2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8=2:4.3.11+dfsg-0ubuntu0.14.04.20+esm9=2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11=2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12=2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13=2:4.3.11+dfsg-0ubuntu0.14.04.20+esm14=2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15
Ubuntu:Pro:16.04:LTSmore threats →ghsa
samba
pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4?arch=source&distro=esm-infra/xenial
Affected versions
=2:4.1.17+dfsg-4ubuntu2=2:4.1.20+dfsg-1ubuntu1=2:4.1.20+dfsg-1ubuntu2=2:4.1.20+dfsg-1ubuntu3=2:4.1.20+dfsg-1ubuntu5=2:4.3.3+dfsg-1ubuntu1=2:4.3.3+dfsg-1ubuntu2=2:4.3.3+dfsg-1ubuntu3=2:4.3.6+dfsg-1ubuntu1=2:4.3.8+dfsg-0ubuntu1=2:4.3.9+dfsg-0ubuntu0.16.04.1=2:4.3.9+dfsg-0ubuntu0.16.04.2=2:4.3.9+dfsg-0ubuntu0.16.04.3=2:4.3.11+dfsg-0ubuntu0.16.04.1=2:4.3.11+dfsg-0ubuntu0.16.04.3=2:4.3.11+dfsg-0ubuntu0.16.04.5=2:4.3.11+dfsg-0ubuntu0.16.04.6=2:4.3.11+dfsg-0ubuntu0.16.04.7=2:4.3.11+dfsg-0ubuntu0.16.04.8=2:4.3.11+dfsg-0ubuntu0.16.04.9=2:4.3.11+dfsg-0ubuntu0.16.04.10=2:4.3.11+dfsg-0ubuntu0.16.04.11=2:4.3.11+dfsg-0ubuntu0.16.04.12=2:4.3.11+dfsg-0ubuntu0.16.04.13=2:4.3.11+dfsg-0ubuntu0.16.04.15=2:4.3.11+dfsg-0ubuntu0.16.04.16=2:4.3.11+dfsg-0ubuntu0.16.04.17=2:4.3.11+dfsg-0ubuntu0.16.04.18=2:4.3.11+dfsg-0ubuntu0.16.04.19=2:4.3.11+dfsg-0ubuntu0.16.04.20=2:4.3.11+dfsg-0ubuntu0.16.04.21=2:4.3.11+dfsg-0ubuntu0.16.04.23=2:4.3.11+dfsg-0ubuntu0.16.04.24=2:4.3.11+dfsg-0ubuntu0.16.04.25=2:4.3.11+dfsg-0ubuntu0.16.04.26=2:4.3.11+dfsg-0ubuntu0.16.04.27=2:4.3.11+dfsg-0ubuntu0.16.04.28=2:4.3.11+dfsg-0ubuntu0.16.04.29=2:4.3.11+dfsg-0ubuntu0.16.04.30=2:4.3.11+dfsg-0ubuntu0.16.04.31=2:4.3.11+dfsg-0ubuntu0.16.04.32=2:4.3.11+dfsg-0ubuntu0.16.04.34=2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1=2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2=2:4.3.11+dfsg-0ubuntu0.16.04.34+esm3=2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4
Ubuntu:Pro:18.04:LTSmore threats →ghsa
samba
pkg:deb/ubuntu/samba@2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3?arch=source&distro=esm-infra/bionic
Affected versions
=2:4.6.7+dfsg-1ubuntu3=2:4.7.1+dfsg-1ubuntu1=2:4.7.3+dfsg-1ubuntu1=2:4.7.4+dfsg-1ubuntu1=2:4.7.6+dfsg~ubuntu-0ubuntu1=2:4.7.6+dfsg~ubuntu-0ubuntu2=2:4.7.6+dfsg~ubuntu-0ubuntu2.2=2:4.7.6+dfsg~ubuntu-0ubuntu2.4=2:4.7.6+dfsg~ubuntu-0ubuntu2.5=2:4.7.6+dfsg~ubuntu-0ubuntu2.6=2:4.7.6+dfsg~ubuntu-0ubuntu2.7=2:4.7.6+dfsg~ubuntu-0ubuntu2.9=2:4.7.6+dfsg~ubuntu-0ubuntu2.10=2:4.7.6+dfsg~ubuntu-0ubuntu2.11=2:4.7.6+dfsg~ubuntu-0ubuntu2.13=2:4.7.6+dfsg~ubuntu-0ubuntu2.14=2:4.7.6+dfsg~ubuntu-0ubuntu2.15=2:4.7.6+dfsg~ubuntu-0ubuntu2.16=2:4.7.6+dfsg~ubuntu-0ubuntu2.17=2:4.7.6+dfsg~ubuntu-0ubuntu2.18=2:4.7.6+dfsg~ubuntu-0ubuntu2.19=2:4.7.6+dfsg~ubuntu-0ubuntu2.20=2:4.7.6+dfsg~ubuntu-0ubuntu2.21=2:4.7.6+dfsg~ubuntu-0ubuntu2.23=2:4.7.6+dfsg~ubuntu-0ubuntu2.24=2:4.7.6+dfsg~ubuntu-0ubuntu2.26=2:4.7.6+dfsg~ubuntu-0ubuntu2.27=2:4.7.6+dfsg~ubuntu-0ubuntu2.28=2:4.7.6+dfsg~ubuntu-0ubuntu2.29=2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1=2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm2=2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3
Ubuntu:Pro:20.04:LTSmore threats →ghsa
samba
pkg:deb/ubuntu/samba@2:4.15.13+dfsg-0ubuntu0.20.04.8+esm2?arch=source&distro=esm-infra/focal
Affected versions
=2:4.10.7+dfsg-0ubuntu2=2:4.10.7+dfsg-0ubuntu3=2:4.11.1+dfsg-3ubuntu1=2:4.11.1+dfsg-3ubuntu2=2:4.11.1+dfsg-3ubuntu4=2:4.11.5+dfsg-1ubuntu1=2:4.11.5+dfsg-1ubuntu2=2:4.11.6+dfsg-0ubuntu1=2:4.11.6+dfsg-0ubuntu1.1=2:4.11.6+dfsg-0ubuntu1.2=2:4.11.6+dfsg-0ubuntu1.3=2:4.11.6+dfsg-0ubuntu1.4=2:4.11.6+dfsg-0ubuntu1.5=2:4.11.6+dfsg-0ubuntu1.6=2:4.11.6+dfsg-0ubuntu1.8=2:4.11.6+dfsg-0ubuntu1.9=2:4.11.6+dfsg-0ubuntu1.10=2:4.13.14+dfsg-0ubuntu0.20.04.1=2:4.13.14+dfsg-0ubuntu0.20.04.2=2:4.13.14+dfsg-0ubuntu0.20.04.3=2:4.13.14+dfsg-0ubuntu0.20.04.4=2:4.13.17~dfsg-0ubuntu0.21.04.1=2:4.13.17~dfsg-0ubuntu0.21.04.2=2:4.13.17~dfsg-0ubuntu1.20.04.1=2:4.13.17~dfsg-0ubuntu1.20.04.2=2:4.13.17~dfsg-0ubuntu1.20.04.4=2:4.13.17~dfsg-0ubuntu1.20.04.5=2:4.15.13+dfsg-0ubuntu0.20.04.1=2:4.15.13+dfsg-0ubuntu0.20.04.2=2:4.15.13+dfsg-0ubuntu0.20.04.3=2:4.15.13+dfsg-0ubuntu0.20.04.4=2:4.15.13+dfsg-0ubuntu0.20.04.5=2:4.15.13+dfsg-0ubuntu0.20.04.6=2:4.15.13+dfsg-0ubuntu0.20.04.7=2:4.15.13+dfsg-0ubuntu0.20.04.8=2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1=2:4.15.13+dfsg-0ubuntu0.20.04.8+esm2
Ubuntu:22.04:LTSmore threats →ghsa
samba
pkg:deb/ubuntu/samba@2:4.15.13+dfsg-0ubuntu1.13?arch=source&distro=jammy
Affected versions
<2:4.15.13+dfsg-0ubuntu1.13=2:4.13.5+dfsg-2ubuntu2=2:4.13.5+dfsg-2ubuntu3=2:4.13.14+dfsg-0ubuntu1=2:4.13.14+dfsg-0ubuntu2=2:4.15.5~dfsg-0ubuntu1=2:4.15.5~dfsg-0ubuntu2=2:4.15.5~dfsg-0ubuntu4=2:4.15.5~dfsg-0ubuntu5=2:4.15.5~dfsg-0ubuntu5.1=2:4.15.9+dfsg-0ubuntu0.2=2:4.15.9+dfsg-0ubuntu0.3=2:4.15.13+dfsg-0ubuntu1=2:4.15.13+dfsg-0ubuntu1.1=2:4.15.13+dfsg-0ubuntu1.2=2:4.15.13+dfsg-0ubuntu1.3=2:4.15.13+dfsg-0ubuntu1.4=2:4.15.13+dfsg-0ubuntu1.5=2:4.15.13+dfsg-0ubuntu1.6=2:4.15.13+dfsg-0ubuntu1.7=2:4.15.13+dfsg-0ubuntu1.8=2:4.15.13+dfsg-0ubuntu1.9=2:4.15.13+dfsg-0ubuntu1.10=2:4.15.13+dfsg-0ubuntu1.12
Ubuntu:24.04:LTSmore threats →ghsa
samba
pkg:deb/ubuntu/samba@2:4.19.5+dfsg-4ubuntu9.7?arch=source&distro=noble
Affected versions
<2:4.19.5+dfsg-4ubuntu9.7=2:4.18.6+dfsg-1ubuntu2=2:4.18.6+dfsg-1ubuntu2.1=2:4.18.6+dfsg-1ubuntu2.2=2:4.19.4+dfsg-3ubuntu1=2:4.19.5+dfsg-1ubuntu1=2:4.19.5+dfsg-4ubuntu7=2:4.19.5+dfsg-4ubuntu8=2:4.19.5+dfsg-4ubuntu9=2:4.19.5+dfsg-4ubuntu9.2=2:4.19.5+dfsg-4ubuntu9.3=2:4.19.5+dfsg-4ubuntu9.4=2:4.19.5+dfsg-4ubuntu9.6
Ubuntu:26.04:LTSmore threats →ghsa
samba
pkg:deb/ubuntu/samba@2:4.23.6+dfsg-1ubuntu2.2?arch=source&distro=resolute
Affected versions
<2:4.23.6+dfsg-1ubuntu2.2=2:4.22.3+dfsg-4ubuntu2=2:4.22.3+dfsg-4ubuntu2.1=2:4.22.3+dfsg-4ubuntu3=2:4.22.3+dfsg-4ubuntu4=2:4.23.4+dfsg-1ubuntu1=2:4.23.5+dfsg-1ubuntu2=2:4.23.6+dfsg-1ubuntu1=2:4.23.6+dfsg-1ubuntu2=2:4.23.6+dfsg-1ubuntu2.1

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

Technical Details

Gcve Source
db.gcve.eu
Osv Id
UBUNTU-CVE-2026-6949
Osv Schema Version
1.7.0
Ecosystems
["Ubuntu:Pro:14.04:LTS","Ubuntu:Pro:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:26.04:LTS"]

Threat ID: 6a6942099c2644c7f86ced01

Added to database: 07/28/2026, 23:58:01 UTC

Last updated: 09/09/2026, 17:34:26 UTC

Views: 76

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