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image/png: slice bounds out of range #10414

dvyukov opened this issue Apr 10, 2015 · 1 comment

image/png: slice bounds out of range #10414

dvyukov opened this issue Apr 10, 2015 · 1 comment


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@dvyukov dvyukov commented Apr 10, 2015

Run the following program on the following input:

package main

import (

func main() {
    data, _ := ioutil.ReadFile(os.Args[1])

It crashes as:

panic: runtime error: slice bounds out of range

goroutine 1 [running]:
image/png.(*decoder).readImagePass(0xc208058e00, 0x7f0a79a0a4b0, 0xc208012230, 0x0, 0xc208012200, 0x0, 0x0, 0x0, 0x0)
    /ssd/src/go10/src/image/png/reader.go:521 +0x162a
image/png.(*decoder).decode(0xc208058e00, 0x0, 0x0, 0x0, 0x0)
    /ssd/src/go10/src/image/png/reader.go:323 +0x1a5
image/png.(*decoder).parseIDAT(0xc208058e00, 0x22, 0x0, 0x0)
    /ssd/src/go10/src/image/png/reader.go:648 +0x3d
image/png.(*decoder).parseChunk(0xc208058e00, 0x0, 0x0)
    /ssd/src/go10/src/image/png/reader.go:696 +0x42c
image/png.Decode(0x7f0a79a0a2d8, 0xc208014450, 0x0, 0x0, 0x0, 0x0)
    /ssd/src/go10/src/image/png/reader.go:752 +0x247
    /tmp/png.go:12 +0x10b

I am on commit 7c37249

@dvyukov dvyukov added this to the Go1.5 milestone Apr 10, 2015
@rsc rsc removed the repo-main label Apr 14, 2015
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@nigeltao nigeltao commented Apr 15, 2015

This was fixed by "reject multiple tRNS chunks" aka commit 7e7d55f, which also fixed 'is the image paletted' to recognize 1-, 2- and 4-bit palettes, not just 8-bit palettes.


@nigeltao nigeltao closed this Apr 15, 2015
@golang golang locked and limited conversation to collaborators Jun 25, 2016
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4 participants