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375d65aa2e
Add a regression test that reproduces the XKB num_levels stack overflow. The test sends an XkbSetMap request with XkbSetMapResizeTypes that includes a non-canonical key type with numLevels=255, exceeding XkbMaxShiftLevel (63). Without the fix, this type would be accepted and stored in the server's type table. A subsequent ChangeKeyboardMapping would trigger XkbUpdateKeyTypesFromCore -> XkbKeyTypesForCoreSymbols, where the oversized num_levels is used as groupsWidth, causing indices into the tsyms[252] stack buffer to reach up to 1019 and overflow. Assisted-by: Claude:claude-opus-4-6 Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/2228> |
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| .. | ||
| __init__.py | ||
| bigrequests.py | ||
| glx.py | ||
| present.py | ||
| randr.py | ||
| record.py | ||
| render.py | ||
| screensaver.py | ||
| shm.py | ||
| sync.py | ||
| vidmode.py | ||
| x11.py | ||
| xi.py | ||
| xinerama.py | ||
| xkb.py | ||
| xres.py | ||