Closed
Description
The following program crashes with the panic on the provided inputs:
package main
import (
"bytes"
"debug/elf"
"io/ioutil"
"os"
)
func main() {
data, _ := ioutil.ReadFile(os.Args[1])
f, err := elf.NewFile(bytes.NewReader(data))
if err != nil {
if f != nil {
panic("file is not nil on error")
}
return
}
defer f.Close()
f.DynamicSymbols()
f.ImportedLibraries()
f.ImportedSymbols()
f.Section(".data")
f.SectionByType(elf.SHT_GNU_VERSYM)
f.Symbols()
dw, err := f.DWARF()
if err != nil {
if dw != nil {
panic("dwarf is not nil on error")
}
return
}
dr := dw.Reader()
for {
e, _ := dr.Next()
if e == nil {
break
}
}
}On input https://drive.google.com/file/d/0B20Uwp8Hs1oCQmk0YU1JaXM1N0E/view?usp=sharing
panic: runtime error: slice bounds out of range
goroutine 1 [running]:
debug/elf.(*File).DynString(0xc208076000, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0)
src/debug/elf/file.go:1053 +0x6ad
debug/elf.(*File).ImportedLibraries(0xc208076000, 0x0, 0x0, 0x0, 0x0, 0x0)
src/debug/elf/file.go:1015 +0x4e
main.main()
elftest.go:21 +0x1ec
On input https://drive.google.com/file/d/0B20Uwp8Hs1oCOXlsZGhXY2NhOW8/view?usp=sharing
panic: runtime error: index out of range
goroutine 1 [running]:
encoding/binary.(*littleEndian).Uint16(0x645be8, 0xc20800a954, 0x1, 0x1, 0xc208040003)
<autogenerated>:8 +0xc9
debug/elf.(*File).gnuVersion(0xc208076000, 0x14, 0xc2080800f0)
src/debug/elf/file.go:1002 +0xb8
debug/elf.(*File).ImportedSymbols(0xc208076000, 0x0, 0x0, 0x0, 0x0, 0x0)
src/debug/elf/file.go:914 +0x348
main.main()
elftest.go:22 +0x1fa
on commit 596bb76