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Fix: may cause UAF problem in get_size_from_segDBs #326

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jiaqizho
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@jiaqizho jiaqizho commented Dec 7, 2023

fix #NO_ISSUE_NUMBER

Change logs

nope

Why are the changes needed?

In function get_size_from_segDBs, If the cdb result returned from segment is not as expected. Then we will clear up the cdb call the ereport. But in this cause the value in cdb result have been freed. We should keep a cdb result before cleanup it.

Does this PR introduce any user-facing change?

nope

How was this patch tested?

nope

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@avamingli
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LGTM.

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@my-ship-it my-ship-it left a comment

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LGTM

In function `get_size_from_segDBs`, If the cdb result returned from
segment is not as expected. Then we will clear up the cdb call the
ereport. But in this cause the value in cdb result have been freed.
We should keep a cdb result before cleanup it.
@jiaqizho jiaqizho force-pushed the fix-uaf-in-udf-get-size-from-segs branch from 37284ab to 0924717 Compare December 8, 2023 09:08
@avamingli
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Pushed, thanks.

@avamingli avamingli merged commit 5003448 into cloudberrydb:main Dec 11, 2023
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3 participants