Debian Security Advisory

DLA-2784-1 icu -- LTS security update

Date Reported:
12 Oct 2021
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2020-21913.
More information:

It was discovered that there was a potential use-after-free vulnerability in icu, a library which provides Unicode and locale functionality.

  • CVE-2020-21913

    International Components for Unicode (ICU-20850) v66.1 was discovered to contain a use after free bug in the pkg_createWithAssemblyCode function in the file tools/pkgdata/pkgdata.cpp.

For Debian 9 Stretch, these problems have been fixed in version 57.1-6+deb9u5.

We recommend that you upgrade your icu packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: