Author: delphij
Date: Fri Sep 4 00:41:29 2015
New Revision: 287446
URL: https://svnweb.freebsd.org/changeset/base/287446
Log:
MFC r287345:
Drop group privileges after opening the kvm descriptor, otherwise, the code
would not drop privileges as expected.
While there also add checks for the drop and bail out immediately if we
failed.
Modified:
stable/10/usr.bin/bluetooth/btsockstat/btsockstat.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/usr.bin/bluetooth/btsockstat/btsockstat.c
==============================================================================
--- stable/10/usr.bin/bluetooth/btsockstat/btsockstat.c Fri Sep 4 00:14:20
2015 (r287445)
+++ stable/10/usr.bin/bluetooth/btsockstat/btsockstat.c Fri Sep 4 00:41:29
2015 (r287446)
@@ -154,9 +154,9 @@ main(int argc, char *argv[])
* Discard setgid privileges if not the running kernel so that
* bad guys can't print interesting stuff from kernel memory.
*/
-
if (memf != NULL)
- setgid(getgid());
+ if (setgid(getgid()) != 0)
+ err(1, "setgid");
kvmd = kopen(memf);
if (kvmd == NULL)
@@ -583,15 +583,9 @@ kopen(char const *memf)
kvm_t *kvmd = NULL;
char errbuf[_POSIX2_LINE_MAX];
- /*
- * Discard setgid privileges if not the running kernel so that
- * bad guys can't print interesting stuff from kernel memory.
- */
-
- if (memf != NULL)
- setgid(getgid());
-
kvmd = kvm_openfiles(NULL, memf, NULL, O_RDONLY, errbuf);
+ if (setgid(getgid()) != 0)
+ err(1, "setgid");
if (kvmd == NULL) {
warnx("kvm_openfiles: %s", errbuf);
return (NULL);
_______________________________________________
svn-src-stable-10@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-stable-10
To unsubscribe, send any mail to "svn-src-stable-10-unsubscr...@freebsd.org"
