Date: Tue, 20 Aug 2019 17:44:03 +0000 (UTC) From: Ed Maste <emaste@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r351254 - head/sys/kern Message-ID: <201908201744.x7KHi38h060502@repo.freebsd.org>
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Author: emaste Date: Tue Aug 20 17:44:03 2019 New Revision: 351254 URL: https://svnweb.freebsd.org/changeset/base/351254 Log: 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: head/sys/kern/uipc_mqueue.c Modified: head/sys/kern/uipc_mqueue.c ============================================================================== --- head/sys/kern/uipc_mqueue.c Tue Aug 20 17:39:32 2019 (r351253) +++ head/sys/kern/uipc_mqueue.c Tue Aug 20 17:44:03 2019 (r351254) @@ -2806,7 +2806,7 @@ 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; @@ -2815,6 +2815,7 @@ 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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