diff options
| -rw-r--r-- | sys/kern/uipc_syscalls.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sys/kern/uipc_syscalls.c b/sys/kern/uipc_syscalls.c index e2206a4..8d54cae 100644 --- a/sys/kern/uipc_syscalls.c +++ b/sys/kern/uipc_syscalls.c @@ -1574,11 +1574,19 @@ sockargs(mp, buf, buflen, type) buflen = MLEN; /* unix domain compat. hack */ else #endif - return (EINVAL); + if ((u_int)buflen > MCLBYTES) + return (EINVAL); } m = m_get(M_TRYWAIT, type); if (m == NULL) return (ENOBUFS); + if ((u_int)buflen > MLEN) { + MCLGET(m, M_TRYWAIT); + if ((m->m_flags & M_EXT) == 0) { + m_free(m); + return (ENOBUFS); + } + } m->m_len = buflen; error = copyin(buf, mtod(m, caddr_t), (u_int)buflen); if (error) |
