Author: emaste
Date: Tue Feb 5 18:11:15 2019
New Revision: 343790
URL: https://svnweb.freebsd.org/changeset/base/343790
Log:
MFS12 r343785: Avoid leaking fp references when truncating SCM_RIGHTS
control messages.
Submitted by: markj
Approved by: so
Security: CVE-2019-5596
Modified:
releng/12.0/sys/kern/uipc_syscalls.c
Directory Properties:
releng/12.0/ (props changed)
Modified: releng/12.0/sys/kern/uipc_syscalls.c
==============================================================================
--- releng/12.0/sys/kern/uipc_syscalls.c Tue Feb 5 18:07:45 2019
(r343789)
+++ releng/12.0/sys/kern/uipc_syscalls.c Tue Feb 5 18:11:15 2019
(r343790)
@@ -1607,8 +1607,10 @@ m_dispose_extcontrolm(struct mbuf *m)
fd = *fds++;
error = fget(td, fd, &cap_no_rights,
&fp);
- if (error == 0)
+ if (error == 0) {
fdclose(td, fp, fd);
+ fdrop(fp, td);
+ }
}
}
clen -= datalen;
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