[MDEV-39481] ASAN error on malformed WKB polygon - Jira

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Type: Bug
Status: Closed (View Workflow)
Priority: Major
Resolution: Fixed
Affects Version/s: 10.6, 10.11, 11.4, 11.8, 12.3
Fix Version/s: 10.6.26, 10.11.17, 11.4.11, 11.8.7, 12.3.2
Component/s: GIS
Labels:
None

Bug Category:
Can result in hang or crash

Description

select st_astext(st_geomfromwkb(x'0103000000020000000400000000000000000000000000000000000000000000000000f03f0000000000000000000000000000f03f000000000000f03f0000000000000000000000000000000005000000000000000000e03f000000000000e03f'));

because Gis_polygon::init_from_wkb() advances wkb but does not decrement len inside the loop.

Reported by Tristan.

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Assignee:: Sergei Golubchik

Reporter:: Sergei Golubchik

Votes:: 0 Vote for this issue

Watchers:: 1 Start watching this issue

Dates

Created:: 2026-04-29 00:09

Updated:: 6 days ago 11:28

Resolved:: 2026-04-29 15:38

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