Date: Thu, 7 Jan 2016 15:37:18 +0000 (UTC) From: "Jonathan T. Looney" <jtl@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r293318 - stable/10/sys/kern Message-ID: <201601071537.u07FbIF9040769@repo.freebsd.org>
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Author: jtl Date: Thu Jan 7 15:37:17 2016 New Revision: 293318 URL: https://svnweb.freebsd.org/changeset/base/293318 Log: MFC r292676: Only allow one PT_INTERP ELF program header. This also fixes a potential memory leak for interp_buf. Modified: stable/10/sys/kern/imgact_elf.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/kern/imgact_elf.c ============================================================================== --- stable/10/sys/kern/imgact_elf.c Thu Jan 7 14:52:32 2016 (r293317) +++ stable/10/sys/kern/imgact_elf.c Thu Jan 7 15:37:17 2016 (r293318) @@ -783,6 +783,11 @@ __CONCAT(exec_, __elfN(imgact))(struct i error = ENOEXEC; goto ret; } + if (interp != NULL) { + uprintf("Multiple PT_INTERP headers\n"); + error = ENOEXEC; + goto ret; + } interp_name_len = phdr[i].p_filesz; if (phdr[i].p_offset > PAGE_SIZE || interp_name_len > PAGE_SIZE - phdr[i].p_offset) {
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