Date: Tue, 20 Aug 2019 17:46:23 +0000 (UTC) From: Ed Maste <emaste@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: r351257 - stable/11/sys/kern Message-ID: <201908201746.x7KHkNV4060785@repo.freebsd.org>
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Author: emaste Date: Tue Aug 20 17:46:22 2019 New Revision: 351257 URL: https://svnweb.freebsd.org/changeset/base/351257 Log: MFC r351254: mqueuefs: fix compat32 struct file leak In a compat32 error case we previously leaked a struct file. Submitted by: Karsten König, Secfault Security Security: CVE-2019-5603 Modified: stable/11/sys/kern/uipc_mqueue.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/kern/uipc_mqueue.c ============================================================================== --- stable/11/sys/kern/uipc_mqueue.c Tue Aug 20 17:45:44 2019 (r351256) +++ stable/11/sys/kern/uipc_mqueue.c Tue Aug 20 17:46:22 2019 (r351257) @@ -2788,7 +2788,7 @@ freebsd32_kmq_timedsend(struct thread *td, if (uap->abs_timeout != NULL) { error = copyin(uap->abs_timeout, &ets32, sizeof(ets32)); if (error != 0) - return (error); + goto out; CP(ets32, ets, tv_sec); CP(ets32, ets, tv_nsec); abs_timeout = &ets; @@ -2797,6 +2797,7 @@ freebsd32_kmq_timedsend(struct thread *td, waitok = !(fp->f_flag & O_NONBLOCK); error = mqueue_send(mq, uap->msg_ptr, uap->msg_len, uap->msg_prio, waitok, abs_timeout); +out: fdrop(fp, td); return (error); }
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