CVS commit: src/sys/kern

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Thu Feb 14 01:00:08 UTC 2013

Modified Files:
        src/sys/kern: uipc_syscalls.c uipc_usrreq.c

Log Message:
Fix some screw cases in cmsg file descriptor passing.

- Don't leave garbage in the control buffer if allocating file
descriptors fails in unp_externalize.

- Scrub the space between CMSG_LEN and CMSG_SPACE to avoid kernel
memory disclosure in unp_externalize.

- Don't read past cmsg_len when closing file descriptors that
couldn't get delivered, in free_rights.

ok christos


To generate a diff of this commit:
cvs rdiff -u -r1.158 -r1.159 src/sys/kern/uipc_syscalls.c
cvs rdiff -u -r1.140 -r1.141 src/sys/kern/uipc_usrreq.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.