Описание
Libevent is an event notification library. Prior to 2.2.2-alpha, libevent can dereference invalid list pointers in ws.c when evws_new_session enters its error path after evhttp_start_ws_ succeeds but bufferevent_enable_locking_ fails. evws_connection_free sees a non-null http_server and unconditionally calls TAILQ_REMOVE even though the session was never inserted into http_server->ws_sessions. A local caller able to induce this allocation or locking failure can crash the process. This issue is fixed in version 2.2.2-alpha.
| Релиз | Статус | Примечание |
|---|---|---|
| devel | needs-triage | |
| esm-infra-legacy/trusty | needs-triage | |
| esm-infra-legacy/xenial | needs-triage | |
| esm-infra/bionic | needs-triage | |
| esm-infra/focal | needs-triage | |
| jammy | needs-triage | |
| noble | needs-triage | |
| resolute | needs-triage | |
| upstream | needs-triage |
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EPSS
Связанные уязвимости
Libevent is an event notification library. Prior to 2.2.2-alpha, libevent can dereference invalid list pointers in ws.c when evws_new_session enters its error path after evhttp_start_ws_ succeeds but bufferevent_enable_locking_ fails. evws_connection_free sees a non-null http_server and unconditionally calls TAILQ_REMOVE even though the session was never inserted into http_server->ws_sessions. A local caller able to induce this allocation or locking failure can crash the process. This issue is fixed in version 2.2.2-alpha.
Libevent is an event notification library. Prior to 2.2.2-alpha, libevent can dereference invalid list pointers in ws.c when evws_new_session enters its error path after evhttp_start_ws_ succeeds but bufferevent_enable_locking_ fails. evws_connection_free sees a non-null http_server and unconditionally calls TAILQ_REMOVE even though the session was never inserted into http_server->ws_sessions. A local caller able to induce this allocation or locking failure can crash the process. This issue is fixed in version 2.2.2-alpha.
Libevent is an event notification library. Prior to 2.2.2-alpha, libev ...
Уязвимость функции evws_new_session() библиотеки асинхронного уведомления событий Libevent, позволяющая нарушителю вызвать отказ в обслуживании
EPSS