ELA-675-1 systemd security update

use-after-free

2022-09-06
Packagesystemd
Version232-25+deb9u15 (stretch)
Related CVEs CVE-2022-2526

A use-after-free vulnerability was found in systemd, a system and service manager. This issue occurs due to the on_stream_io() function and dns_stream_complete() function in ‘resolved-dns-stream.c’ not incrementing the reference counting for the DnsStream object. Therefore, other functions and callbacks called can dereference the DNSStream object, causing the use-after-free when the reference is still used later.

For Debian 9 stretch, these problems have been fixed in version 232-25+deb9u15.

We recommend that you upgrade your systemd packages.

Further information about Extended LTS security advisories can be found at: https://deb.freexian.com/extended-lts/