Debian Security Advisory

DLA-2890-1 libspf2 -- LTS security update

Date Reported:
21 Jan 2022
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2021-33912, CVE-2021-33913.
More information:

Two issues have been found in libspf2, a library for validating mail senders with SPF. Both issues are related to heap-based buffer overflows.

For Debian 9 stretch, these problems have been fixed in version 1.2.10-7+deb9u2.

We recommend that you upgrade your libspf2 packages.

For the detailed security status of libspf2 please refer to its security tracker page at:

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