OPENSUSE-SU-2026:20260-1: mosquitto&distro=openSUSE Leap 16.0 openSUSE

Vulnerability summary

OPENSUSE-SU-2026:20260-1 is a vulnerability in mosquitto&distro=openSUSE Leap 16.0 openSUSE with no CVSS score yet.

Timeline

1. 23-02-2026
   PublishedVulnerability first disclosed.
2. 23-03-2026
   Last modifiedVulnerability information updated.

Description

Security update for mosquitto This update for mosquitto fixes the following issues: Changes in mosquitto: - update to 2.0.23 (boo#1258671) * Fix handling of disconnected sessions for `per_listener_settings true` * Check return values of openssl *_get_ex_data() and *_set_ex_data() to prevent possible crash. This could occur only in extremely unlikely situations * Check return value of openssl ASN1_string_[get0_]data() functions for NULL. This prevents a crash in case of incorrect certificate handling in openssl * Fix potential crash on startup if a malicious/corrupt persistence file from mosquitto 1.5 or earlier is loaded * Limit auto_id_prefix to 50 characters - Update to version 2.0.22 Broker * Bridge: Fix idle_timeout never occurring for lazy bridges. * Fix case where max_queued_messages = 0 was not treated as unlimited. * Fix --version exit code and output. * Fix crash on receiving a $CONTROL message over a bridge, if per_listener_settings is set true and the bridge is carrying out topic remapping. * Fix incorrect reference clock being selected on startup on Linux. Closes #3238. * Fix reporting of client disconnections being incorrectly attributed to "out of memory". * Fix compilation when using WITH_OLD_KEEPALIVE. * Fix problems with secure websockets. * Fix crash on exit when using WITH_EPOLL=no. * Fix clients being incorrectly expired when they have keepalive == max_keepalive. Closes #3226, #3286. Dynamic security plugin * Fix mismatch memory free when saving config which caused memory tracking to be incorrect. Client library * Fix C++ symbols being removed when compiled with link time optimisation. * TLS error handling was incorrectly setting a protocol error for non-TLS errors. This would cause the mosquitto_loop_start() thread to exit if no broker was available on the first connection attempt. This has been fixed. Closes #3258. * Fix linker errors on some architectures using cmake. - Update to version 2.0.21 Broker * Fix clients sending a RESERVED packet not being quickly disconnected. * Fix bind_interface producing an error when used with an interface that has an IPv6 link-local address and no other IPv6 addresses. * Fix mismatched wrapped/unwrapped memory alloc/free in properties. * Fix allow_anonymous false not being applied in local only mode. * Add retain_expiry_interval option to fix expired retained message not being removed from memory if they are not subscribed to. * Produce an error if invalid combinations of cafile/capath/certfile/keyfile are used. * Backport keepalive checking from develop to fix problems in current implementation. Client library * Fix potential deadlock in mosquitto_sub if -W is used. Apps * mosquitto_ctrl dynsec now also allows -i to specify a clientid as well as -c. This matches the documentation which states -i. Tests * Fix 08-ssl-connect-cert-auth-expired and 08-ssl-connect-cert-auth-revoked tests when under load. - systemd service: Wait till the network got setup to avoid startup failure.

No weakness data has been published for this record.