Date: Tue, 26 Feb 2019 15:06:45 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r344584 - stable/11/sys/geom Message-ID: <201902261506.x1QF6jI0077316@repo.freebsd.org>
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Author: markj Date: Tue Feb 26 15:06:44 2019 New Revision: 344584 URL: https://svnweb.freebsd.org/changeset/base/344584 Log: MFC r344305, r344365: Impose a limit on the number of GEOM_CTL arguments. admbug: 854 Modified: stable/11/sys/geom/geom_ctl.c stable/11/sys/geom/geom_ctl.h Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/geom/geom_ctl.c ============================================================================== --- stable/11/sys/geom/geom_ctl.c Tue Feb 26 15:03:59 2019 (r344583) +++ stable/11/sys/geom/geom_ctl.c Tue Feb 26 15:06:44 2019 (r344584) @@ -137,6 +137,12 @@ gctl_copyin(struct gctl_req *req) char *p; u_int i; + if (req->narg > GEOM_CTL_ARG_MAX) { + gctl_error(req, "too many arguments"); + req->arg = NULL; + return; + } + ap = geom_alloc_copyin(req, req->arg, req->narg * sizeof(*ap)); if (ap == NULL) { gctl_error(req, "bad control request"); Modified: stable/11/sys/geom/geom_ctl.h ============================================================================== --- stable/11/sys/geom/geom_ctl.h Tue Feb 26 15:03:59 2019 (r344583) +++ stable/11/sys/geom/geom_ctl.h Tue Feb 26 15:06:44 2019 (r344584) @@ -76,7 +76,8 @@ struct gctl_req { #define GEOM_CTL _IOW('G', GCTL_VERSION, struct gctl_req) -#define PATH_GEOM_CTL "geom.ctl" +#define GEOM_CTL_ARG_MAX 2048 /* maximum number of parameters */ +#define PATH_GEOM_CTL "geom.ctl" #endif /* _GEOM_GEOM_CTL_H_ */
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