Date: Tue, 5 Feb 2019 18:11:15 +0000 (UTC) From: Ed Maste <emaste@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-releng@freebsd.org Subject: svn commit: r343790 - releng/12.0/sys/kern Message-ID: <201902051811.x15IBFCm048691@repo.freebsd.org>
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Author: emaste Date: Tue Feb 5 18:11:15 2019 New Revision: 343790 URL: https://svnweb.freebsd.org/changeset/base/343790 Log: MFS12 r343785: Avoid leaking fp references when truncating SCM_RIGHTS control messages. Submitted by: markj Approved by: so Security: CVE-2019-5596 Modified: releng/12.0/sys/kern/uipc_syscalls.c Directory Properties: releng/12.0/ (props changed) Modified: releng/12.0/sys/kern/uipc_syscalls.c ============================================================================== --- releng/12.0/sys/kern/uipc_syscalls.c Tue Feb 5 18:07:45 2019 (r343789) +++ releng/12.0/sys/kern/uipc_syscalls.c Tue Feb 5 18:11:15 2019 (r343790) @@ -1607,8 +1607,10 @@ m_dispose_extcontrolm(struct mbuf *m) fd = *fds++; error = fget(td, fd, &cap_no_rights, &fp); - if (error == 0) + if (error == 0) { fdclose(td, fp, fd); + fdrop(fp, td); + } } } clen -= datalen;
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