diff options
| -rw-r--r-- | pkg/sentry/strace/socket.go | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/pkg/sentry/strace/socket.go b/pkg/sentry/strace/socket.go index 94334f6d2..51f2efb39 100644 --- a/pkg/sentry/strace/socket.go +++ b/pkg/sentry/strace/socket.go @@ -208,6 +208,15 @@ func cmsghdr(t *kernel.Task, addr usermem.Addr, length uint64, maxBytes uint64) i += linux.SizeOfControlMessageHeader width := t.Arch().Width() length := int(h.Length) - linux.SizeOfControlMessageHeader + if length < 0 { + strs = append(strs, fmt.Sprintf( + "{level=%s, type=%s, length=%d, content too short}", + level, + typ, + h.Length, + )) + break + } if skipData { strs = append(strs, fmt.Sprintf("{level=%s, type=%s, length=%d}", level, typ, h.Length)) |