diff options
Diffstat (limited to 'src/math/big/ratmarsh.go')
| -rw-r--r-- | src/math/big/ratmarsh.go | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/math/big/ratmarsh.go b/src/math/big/ratmarsh.go index fbc7b6002d9..56102e845b7 100644 --- a/src/math/big/ratmarsh.go +++ b/src/math/big/ratmarsh.go @@ -45,12 +45,18 @@ func (z *Rat) GobDecode(buf []byte) error { *z = Rat{} return nil } + if len(buf) < 5 { + return errors.New("Rat.GobDecode: buffer too small") + } b := buf[0] if b>>1 != ratGobVersion { return fmt.Errorf("Rat.GobDecode: encoding version %d not supported", b>>1) } const j = 1 + 4 i := j + binary.BigEndian.Uint32(buf[j-4:j]) + if len(buf) < int(i) { + return errors.New("Rat.GobDecode: buffer too small") + } z.a.neg = b&1 != 0 z.a.abs = z.a.abs.setBytes(buf[j:i]) z.b.abs = z.b.abs.setBytes(buf[i:]) |