CVE-2022-2526

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.

• CWE-416
• CWE-416

• https://github.com/systemd/systemd/commit/d973d94dec349fb676fdd844f6fe2ada3538f27cPatch, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20221111-0005/Third Party Advisory
• https://github.com/systemd/systemd/commit/d973d94dec349fb676fdd844f6fe2ada3538f27cPatch, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20221111-0005/Third Party Advisory

Published

Sep 9, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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