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| author | gVisor bot <gvisor-bot@google.com> | 2021-02-22 19:56:13 +0000 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2021-02-22 19:56:13 +0000 |
| commit | 7a034e6f232efae9efcf9b709f2a535027756db2 (patch) | |
| tree | 66d62bb59fac3880bb83fbb887f9345ae08ab925 | |
| parent | 05500cae9a2043a975546b765b0d7c2565590f68 (diff) | |
| parent | c5a4e100085ccbd063df36706cccf93951439cb7 (diff) | |
Merge release-20210208.0-80-gc5a4e1000 (automated)
| -rw-r--r-- | pkg/sentry/syscalls/linux/sys_socket.go | 8 | ||||
| -rw-r--r-- | pkg/sentry/syscalls/linux/vfs2/socket.go | 8 |
2 files changed, 16 insertions, 0 deletions
diff --git a/pkg/sentry/syscalls/linux/sys_socket.go b/pkg/sentry/syscalls/linux/sys_socket.go index 686392cc8..c6adfe06b 100644 --- a/pkg/sentry/syscalls/linux/sys_socket.go +++ b/pkg/sentry/syscalls/linux/sys_socket.go @@ -657,6 +657,10 @@ func RecvMMsg(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc return 0, nil, syserror.EINVAL } + if vlen > linux.UIO_MAXIOV { + vlen = linux.UIO_MAXIOV + } + // Reject flags that we don't handle yet. if flags & ^(baseRecvFlags|linux.MSG_CMSG_CLOEXEC|linux.MSG_ERRQUEUE) != 0 { return 0, nil, syserror.EINVAL @@ -938,6 +942,10 @@ func SendMMsg(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc return 0, nil, syserror.EINVAL } + if vlen > linux.UIO_MAXIOV { + vlen = linux.UIO_MAXIOV + } + // Get socket from the file descriptor. file := t.GetFile(fd) if file == nil { diff --git a/pkg/sentry/syscalls/linux/vfs2/socket.go b/pkg/sentry/syscalls/linux/vfs2/socket.go index 7636ca453..346fd1cea 100644 --- a/pkg/sentry/syscalls/linux/vfs2/socket.go +++ b/pkg/sentry/syscalls/linux/vfs2/socket.go @@ -660,6 +660,10 @@ func RecvMMsg(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc return 0, nil, syserror.EINVAL } + if vlen > linux.UIO_MAXIOV { + vlen = linux.UIO_MAXIOV + } + // Reject flags that we don't handle yet. if flags & ^(baseRecvFlags|linux.MSG_CMSG_CLOEXEC|linux.MSG_ERRQUEUE) != 0 { return 0, nil, syserror.EINVAL @@ -941,6 +945,10 @@ func SendMMsg(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc return 0, nil, syserror.EINVAL } + if vlen > linux.UIO_MAXIOV { + vlen = linux.UIO_MAXIOV + } + // Get socket from the file descriptor. file := t.GetFileVFS2(fd) if file == nil { |