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USN-5260-3: Samba vulnerability

3 February 2022

Samba could be made to crash when handled certain memory operations.

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Releases

Packages

  • samba - SMB/CIFS file, print, and login server for Unix

Details

USN-5260-1 fixed a vulnerability in Samba. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

Orange Tsai discovered that the Samba vfs_fruit module incorrectly handled
certain memory operations. A remote attacker could use this issue to cause
Samba to crash, resulting in a denial of service, or possibly execute
arbitrary code as root. (CVE-2021-44142)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04
Ubuntu 14.04

This update uses a new upstream release, which includes additional bug
fixes. In general, a standard system update will make all the necessary
changes.

References

Related notices

  • USN-5260-1: samba-dsdb-modules, python3-samba, registry-tools, ctdb, samba-dev, libsmbclient, samba-vfs-modules, samba-common-bin, samba, samba-libs, winbind, libwbclient0, libnss-winbind, libpam-winbind, libwbclient-dev, libsmbclient-dev, samba-testsuite, samba-common, smbclient
  • USN-5260-2: samba-dsdb-modules, python-samba, libparse-pidl-perl, registry-tools, ctdb, samba-dev, libsmbclient, samba-vfs-modules, samba-common-bin, samba, samba-libs, winbind, libwbclient0, libnss-winbind, libpam-winbind, libwbclient-dev, libsmbclient-dev, samba-testsuite, samba-common, smbclient