CVE-2022-2526

Public on 2022-09-09
Modified on 2024-05-02
Description
A use-after-free vulnerability was found in systemd. 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.
Severity
Important severity
Important
CVSS v3 Base Score
9.8
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 2 - Core systemd 2022-09-30 ALAS2-2022-1854 Fixed
Amazon Linux 2023 systemd Not Affected

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD CVSSv3 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H