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Posted to commits@cloudberry.apache.org by "yjhjstz (via GitHub)" <gi...@apache.org> on 2025/08/08 21:29:45 UTC
[PR] Prevent use after free in flatten_join_alias_var_optimizer function [cloudberry]
yjhjstz opened a new pull request, #1302:
URL: https://github.com/apache/cloudberry/pull/1302
This patch prevents several use after free bugs present in flatten_join_alias_var_optimizer. Specifically, the function uses flatten_join_alias_vars function multiple times, and assumes that the original node can be freed immediately after. This is not always the case since under some circumstances flatten_join_alias_vars does not modify its input and simply passes it through without copying. This patch adds conditions to check if the original node can safely be freed, preventing use after free.
Fixes #ISSUE_Number
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Re: [PR] Prevent use after free in flatten_join_alias_var_optimizer function [cloudberry]
Posted by "yjhjstz (via GitHub)" <gi...@apache.org>.
yjhjstz closed pull request #1302: Prevent use after free in flatten_join_alias_var_optimizer function
URL: https://github.com/apache/cloudberry/pull/1302
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Re: [PR] Prevent use after free in flatten_join_alias_var_optimizer function [cloudberry]
Posted by "yjhjstz (via GitHub)" <gi...@apache.org>.
yjhjstz commented on PR #1302:
URL: https://github.com/apache/cloudberry/pull/1302#issuecomment-3180681378
ci failed, related https://github.com/apache/cloudberry/issues/1309
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