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Fatal using approx_top_k and finalizeAggregation

bugConfirmed user-visible misbehaviour in official releaseConfirmed user-visible misbehaviour in official release

crashCrash / segfault / abortCrash / segfault / abort

Status: Open.

#86882 In ClickHouse/ClickHouse;

· alsugiliazova opened on Sep 9, 2025

Remove settings from Iceberg table column SEGV

bugConfirmed user-visible misbehaviour in official releaseConfirmed user-visible misbehaviour in official release

comp-datalakeIssues related to iceberg, delta lake and all the catalog integrations.Issues related to iceberg, delta lake and all the catalog integrations.

crashCrash / segfault / abortCrash / segfault / abort

fuzzProblem found by one of the fuzzersProblem found by one of the fuzzers

Status: Open.

#86330 In ClickHouse/ClickHouse;

· PedroTadim opened on Aug 28, 2025

Native Parquet reader out of bounds read

bugConfirmed user-visible misbehaviour in official releaseConfirmed user-visible misbehaviour in official release

crashCrash / segfault / abortCrash / segfault / abort

fuzzProblem found by one of the fuzzersProblem found by one of the fuzzers

Status: Open.

#85624 In ClickHouse/ClickHouse;

· PedroTadim opened on Aug 14, 2025

read_in_order_use_virtual_row SEGV

bugConfirmed user-visible misbehaviour in official releaseConfirmed user-visible misbehaviour in official release

crashCrash / segfault / abortCrash / segfault / abort

Status: Open.

#85596 In ClickHouse/ClickHouse;

· DerekChia opened on Aug 14, 2025

<code>Array(Tuple)</code> with tuple element <code>size0</code> leads to logical error and crash

bugConfirmed user-visible misbehaviour in official releaseConfirmed user-visible misbehaviour in official release

crashCrash / segfault / abortCrash / segfault / abort

Status: Open.

#85161 In ClickHouse/ClickHouse;

· GrigoryPervakov opened on Aug 6, 2025

null pointer read with rabbitmq table integration

crashCrash / segfault / abortCrash / segfault / abort

Status: Open.

#84702 In ClickHouse/ClickHouse;

· roderickgreen opened on Jul 30, 2025

Null pointer dereference when accessing <code>hive</code> table function (unsupported)

crashCrash / segfault / abortCrash / segfault / abort

experimental featureBug in the feature that should not be used in productionBug in the feature that should not be used in production

help wanted

not plannedKnown issue, no plans to fix it currenltyKnown issue, no plans to fix it currenlty

Status: Open.

#82982 In ClickHouse/ClickHouse;

· fantasy12345zsq opened on Jul 1, 2025

Stack overflow on bad backup

bugConfirmed user-visible misbehaviour in official releaseConfirmed user-visible misbehaviour in official release

crashCrash / segfault / abortCrash / segfault / abort

easy taskGood for first contributorsGood for first contributors

fuzzProblem found by one of the fuzzersProblem found by one of the fuzzers

Status: Open.

#82671 In ClickHouse/ClickHouse;

· PedroTadim opened on Jun 26, 2025

Logical error: 'Bad cast from type DB::ColumnNullable to DB::ColumnString'.

bugConfirmed user-visible misbehaviour in official releaseConfirmed user-visible misbehaviour in official release

crashCrash / segfault / abortCrash / segfault / abort

fuzzProblem found by one of the fuzzersProblem found by one of the fuzzers

Status: Open.

#82499 In ClickHouse/ClickHouse;

· GrigoryPervakov opened on Jun 24, 2025

Segfault during upgrade

crashCrash / segfault / abortCrash / segfault / abort

Status: Open.

#82164 In ClickHouse/ClickHouse;

· maxknv opened on Jun 19, 2025

SEGV with process_query_plan_packet setting and hypothesis index

bugConfirmed user-visible misbehaviour in official releaseConfirmed user-visible misbehaviour in official release

crashCrash / segfault / abortCrash / segfault / abort

fuzzProblem found by one of the fuzzersProblem found by one of the fuzzers

Status: Open.

#81281 In ClickHouse/ClickHouse;

· PedroTadim opened on Jun 4, 2025

SerializationString Crash after DROP/ADD the same column

bugConfirmed user-visible misbehaviour in official releaseConfirmed user-visible misbehaviour in official release

crashCrash / segfault / abortCrash / segfault / abort

v25.3-affected

v25.5-affected

Status: Open.

#81045 In ClickHouse/ClickHouse;

· lesandie opened on May 30, 2025