CVE-2026-4480 · cross-distro fix matrix

CVE-2026-4480: Asim Viladi Oglu Manizada discovered that Samba incorrectly handled access

Affects 3 Linux releases across 50 (distro × package) combinations. First disclosed: 2026-05-26.

CVSS v3:HIGH · 8.5(NVD-published)

Fix per ecosystem

Each block below is a distro release where CVE-2026-4480 has a known fix. Run the listed command on that distro to remediate.

Ubuntu jammy

Source: Ubuntu USN

samba→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y samba
```
ctdb→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y ctdb
```
libnss-winbind→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y libnss-winbind
```
libpam-winbind→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y libpam-winbind
```
libsmbclient→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y libsmbclient
```
libsmbclient-dev→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y libsmbclient-dev
```
libwbclient-dev→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y libwbclient-dev
```
libwbclient0→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y libwbclient0
```
python3-samba→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y python3-samba
```
registry-tools→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y registry-tools
```
samba-common→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-common
```
samba-common-bin→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-common-bin
```
samba-dev→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-dev
```
samba-dsdb-modules→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-dsdb-modules
```
samba-libs→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-libs
```
samba-testsuite→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-testsuite
```
samba-vfs-modules→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-vfs-modules
```
smbclient→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y smbclient
```
winbind→ fixed in2:4.15.13+dfsg-0ubuntu1.12USN-8306-1
```
sudo apt-get install --only-upgrade -y winbind
```

Ubuntu noble

Source: Ubuntu USN

samba→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y samba
```
ctdb→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y ctdb
```
ldb-tools→ fixed in2:2.8.0+samba4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y ldb-tools
```
libldb-dev→ fixed in2:2.8.0+samba4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y libldb-dev
```
libldb2→ fixed in2:2.8.0+samba4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y libldb2
```
libnss-winbind→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y libnss-winbind
```
libpam-winbind→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y libpam-winbind
```
libsmbclient-dev→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y libsmbclient-dev
```
libsmbclient0→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y libsmbclient0
```
libwbclient-dev→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y libwbclient-dev
```
libwbclient0→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y libwbclient0
```
python3-ldb→ fixed in2:2.8.0+samba4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y python3-ldb
```
python3-ldb-dev→ fixed in2:2.8.0+samba4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y python3-ldb-dev
```
python3-samba→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y python3-samba
```
registry-tools→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y registry-tools
```
samba-ad-dc→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-ad-dc
```
samba-ad-provision→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-ad-provision
```
samba-common→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-common
```
samba-common-bin→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-common-bin
```
samba-dev→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-dev
```
samba-dsdb-modules→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-dsdb-modules
```
samba-libs→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-libs
```
samba-testsuite→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-testsuite
```
samba-vfs-modules→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-vfs-modules
```
samba-vfs-modules-extra→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y samba-vfs-modules-extra
```
smbclient→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y smbclient
```
winbind→ fixed in2:4.19.5+dfsg-4ubuntu9.6USN-8306-1
```
sudo apt-get install --only-upgrade -y winbind
```

Ubuntu questing

Source: Ubuntu USN

samba→ fixed in2:4.22.3+dfsg-4ubuntu2.4USN-8306-1
```
sudo apt-get install --only-upgrade -y samba
```
ctdb→ fixed in2:4.22.3+dfsg-4ubuntu2.4USN-8306-1
```
sudo apt-get install --only-upgrade -y ctdb
```
ldb-tools→ fixed in2:2.11.0+samba4.22.3+dfsg-4ubuntu2.4USN-8306-1
```
sudo apt-get install --only-upgrade -y ldb-tools
```
libldb-dev→ fixed in2:2.11.0+samba4.22.3+dfsg-4ubuntu2.4USN-8306-1
```
sudo apt-get install --only-upgrade -y libldb-dev
```

Are YOU affected by CVE-2026-4480?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

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