Backport to 2.27.x: #9800: Check hypertable ownership before recompression - #9855
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The SQL functions for compressing and rebuilding chunks did not verify that the caller owned the hypertable. The first-time compression path was protected by a check inside a shared helper, but the recompression paths skipped it. Any user who could read a chunk OID from the catalog could trigger a recompression on chunks owned by someone else. Add the ownership check at the entry of each affected function. (cherry picked from commit c3e42dd)
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May 19, 2026 05:37
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This is an automated backport of #9800: Check hypertable ownership before recompression.
This PR will be merged automatically after all the relevant CI checks pass. If this fix should not be backported, or will be backported manually, just close this PR. You can use the backport branch to add your changes, it won't be modified automatically anymore.
For more details, please see the documentation
Original description
Check hypertable ownership before recompression
The SQL functions for compressing and rebuilding chunks did not
verify that the caller owned the hypertable. The first-time
compression path was protected by a check inside a shared helper,
but the recompression paths skipped it. Any user who could read a
chunk OID from the catalog could trigger a recompression on chunks
owned by someone else.
Add the ownership check at the entry of each affected function.
Disable-check: force-changelog-file