Author: delphij
Date: Mon Nov 27 03:47:12 2017
New Revision: 326242
URL: https://svnweb.freebsd.org/changeset/base/326242
Log:
MFC r325755: Be more careful when doing calculation with request from
userland.
Modified:
stable/11/sys/kern/kern_proc.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/kern/kern_proc.c
==============================================================================
--- stable/11/sys/kern/kern_proc.c Mon Nov 27 02:44:36 2017
(r326241)
+++ stable/11/sys/kern/kern_proc.c Mon Nov 27 03:47:12 2017
(r326242)
@@ -1933,7 +1933,7 @@ sysctl_kern_proc_args(SYSCTL_HANDLER_ARGS)
if (error != 0 || req->newptr == NULL)
return (error);
- if (req->newlen + sizeof(struct pargs) > ps_arg_cache_limit)
+ if (req->newlen > ps_arg_cache_limit - sizeof(struct pargs))
return (ENOMEM);
newpa = pargs_alloc(req->newlen);
error = SYSCTL_IN(req, newpa->ar_args, req->newlen);
_______________________________________________
[email protected] mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "[email protected]"
