Debian Security Advisory

DLA-3655-1 lwip -- LTS security update

Date Reported:
18 Nov 2023
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 991646.
In Mitre's CVE dictionary: CVE-2020-22283.
More information:

A buffer overflow vulnerability has been found in lwip, a small independent implementation of the TCP/IPv4/IPv6 protocol suite, which allows an attacker to access information via a crafted ICMPv6 package. This vulnerability has been assigned CVE-2020-22283.

For Debian 10 buster, this problem has been fixed in version 2.0.3-3+deb10u2.

We recommend that you upgrade your lwip packages.

For the detailed security status of lwip 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: