A flaw was found in PostgreSQL involving the pg_cancel_backend role that signals background workers, including the logical replication launcher, autovacuum workers, and the autovacuum launcher. Successful exploitation requires a non-core extension with a less-resilient background worker and would affect that specific background worker only. This issue may allow a remote high privileged user to launch a denial of service (DoS) attack.
https://www.cisa.gov/news-events/ics-advisories/icsa-24-228-06
https://www.postgresql.org/support/security/CVE-2023-5870/
https://www.postgresql.org/about/news/postgresql-161-155-1410-1313-1217-and-1122-released-2749/
https://bugzilla.redhat.com/show_bug.cgi?id=2247170
https://access.redhat.com/security/cve/CVE-2023-5870
https://access.redhat.com/errata/RHSA-2024:0337
https://access.redhat.com/errata/RHSA-2024:0332
https://access.redhat.com/errata/RHSA-2024:0304
https://access.redhat.com/errata/RHSA-2023:7885
https://access.redhat.com/errata/RHSA-2023:7884
https://access.redhat.com/errata/RHSA-2023:7883
https://access.redhat.com/errata/RHSA-2023:7785
https://access.redhat.com/errata/RHSA-2023:7784
https://access.redhat.com/errata/RHSA-2023:7772
https://access.redhat.com/errata/RHSA-2023:7770
https://access.redhat.com/errata/RHSA-2023:7714
https://access.redhat.com/errata/RHSA-2023:7695
https://access.redhat.com/errata/RHSA-2023:7694
https://access.redhat.com/errata/RHSA-2023:7667
https://access.redhat.com/errata/RHSA-2023:7666
https://access.redhat.com/errata/RHSA-2023:7656
https://access.redhat.com/errata/RHSA-2023:7616
https://access.redhat.com/errata/RHSA-2023:7581
https://access.redhat.com/errata/RHSA-2023:7580