[MDEV-39816] MyISAM crash on corrupted MYI with invalid keyseg length - Jira

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Details

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: 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, 13.0.2
Component/s: Storage Engine - MyISAM
Labels:
None

Bug Category:
Can result in hang or crash

Description

if MYI has an index and keyseg not packed and its length larger than HA_MAX_KEY_LENGTH, MyISAM could crash when accessing this key

Reported by Lukas Kupczyk

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Assignee:: Sergei Golubchik

Reporter:: Sergei Golubchik

Votes:: 0 Vote for this issue

Watchers:: 1 Start watching this issue

Dates

Created:: 2026-06-01 19:12

Updated:: 2026-07-22 13:34

Resolved:: 2026-07-22 13:34

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