diff options
| -rw-r--r-- | src/debug/buildinfo/buildinfo.go | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/debug/buildinfo/buildinfo.go b/src/debug/buildinfo/buildinfo.go index f3d38b26e8..07f835127e 100644 --- a/src/debug/buildinfo/buildinfo.go +++ b/src/debug/buildinfo/buildinfo.go @@ -380,7 +380,14 @@ func searchMagic(x exe, start, size uint64) (uint64, error) { } if i%buildInfoAlign != 0 { // Found magic, but misaligned. Keep searching. - data = data[(i+buildInfoAlign-1)&^(buildInfoAlign-1):] + next := (i + buildInfoAlign - 1) &^ (buildInfoAlign - 1) + if next > len(data) { + // Corrupt object file: the remaining + // count says there is more data, + // but we didn't read it. + return 0, errNotGoExe + } + data = data[next:] continue } // Good match! |