#3886 closed defect (fixed)
Crash with AVERAGE raster resampling and funky reprojection
| Reported by: | warmerdam | Owned by: | warmerdam |
|---|---|---|---|
| Priority: | normal | Milestone: | 5.6.7 release |
| Component: | MapServer C Library | Version: | 5.6 |
| Severity: | normal | Keywords: | |
| Cc: |
Description
I have a situation where a map requested in UTM for an unreasonably large region from a lat/long raster with averaged sample crashes in msSourceSample().
Change History (2)
comment:1 by , 13 years ago
| Milestone: | 6.0.1 release → 5.6.7 release |
|---|---|
| Resolution: | → fixed |
| Status: | new → closed |
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The problem turns out to be reprojection producing very large positive values in dfXMin in msAverageRasterResampler(). In msAverageSample() this is cast to int and because it exceeds INT_MAX it wraps to a very negative integer number. This results in an access outside the raster buffer.
Fixed in trunk (r11732) and 5.6 branch (r11733).