diff options
Diffstat (limited to 'meta/recipes-devtools/patch/patch/0001-Don-t-leak-temporary-file-on-failed-ed-style-patch.patch')
| -rw-r--r-- | meta/recipes-devtools/patch/patch/0001-Don-t-leak-temporary-file-on-failed-ed-style-patch.patch | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/meta/recipes-devtools/patch/patch/0001-Don-t-leak-temporary-file-on-failed-ed-style-patch.patch b/meta/recipes-devtools/patch/patch/0001-Don-t-leak-temporary-file-on-failed-ed-style-patch.patch new file mode 100644 index 0000000000..78345e925e --- /dev/null +++ b/meta/recipes-devtools/patch/patch/0001-Don-t-leak-temporary-file-on-failed-ed-style-patch.patch @@ -0,0 +1,94 @@ +From 7f770b9c20da1a192dad8cb572a6391f2773285a Mon Sep 17 00:00:00 2001 +From: Jean Delvare <jdelvare@suse.de> +Date: Thu, 3 May 2018 14:31:55 +0200 +Subject: [PATCH 1/2] Don't leak temporary file on failed ed-style patch + +Now that we write ed-style patches to a temporary file before we +apply them, we need to ensure that the temporary file is removed +before we leave, even on fatal error. + +* src/pch.c (do_ed_script): Use global TMPEDNAME instead of local + tmpname. Don't unlink the file directly, instead tag it for removal + at exit time. +* src/patch.c (cleanup): Unlink TMPEDNAME at exit. + +This closes bug #53820: +https://savannah.gnu.org/bugs/index.php?53820 + +Fixes: 123eaff0d5d1 ("Fix arbitrary command execution in ed-style patches (CVE-2018-1000156)") + +CVE: CVE-2018-1000156 +Upstream-Status: Backport [http://git.savannah.gnu.org/cgit/patch.git/commit/?id=19599883ffb6a450d2884f081f8ecf68edbed7ee] +Signed-off-by: Anuj Mittal <anuj.mittal@intel.com> +--- + src/common.h | 2 ++ + src/pch.c | 12 +++++------- + 2 files changed, 7 insertions(+), 7 deletions(-) + +diff --git a/src/common.h b/src/common.h +index ec50b40..22238b5 100644 +--- a/src/common.h ++++ b/src/common.h +@@ -94,10 +94,12 @@ XTERN char const *origsuff; + XTERN char const * TMPINNAME; + XTERN char const * TMPOUTNAME; + XTERN char const * TMPPATNAME; ++XTERN char const * TMPEDNAME; + + XTERN bool TMPINNAME_needs_removal; + XTERN bool TMPOUTNAME_needs_removal; + XTERN bool TMPPATNAME_needs_removal; ++XTERN bool TMPEDNAME_needs_removal; + + #ifdef DEBUGGING + XTERN int debug; +diff --git a/src/pch.c b/src/pch.c +index 16e001a..c1a62cf 100644 +--- a/src/pch.c ++++ b/src/pch.c +@@ -2392,7 +2392,6 @@ do_ed_script (char const *inname, char const *outname, + file_offset beginning_of_this_line; + size_t chars_read; + FILE *tmpfp = 0; +- char const *tmpname; + int tmpfd; + pid_t pid; + +@@ -2404,12 +2403,13 @@ do_ed_script (char const *inname, char const *outname, + invalid commands and treats the next line as a new command, which + can lead to arbitrary command execution. */ + +- tmpfd = make_tempfile (&tmpname, 'e', NULL, O_RDWR | O_BINARY, 0); ++ tmpfd = make_tempfile (&TMPEDNAME, 'e', NULL, O_RDWR | O_BINARY, 0); + if (tmpfd == -1) +- pfatal ("Can't create temporary file %s", quotearg (tmpname)); ++ pfatal ("Can't create temporary file %s", quotearg (TMPEDNAME)); ++ TMPEDNAME_needs_removal = true; + tmpfp = fdopen (tmpfd, "w+b"); + if (! tmpfp) +- pfatal ("Can't open stream for file %s", quotearg (tmpname)); ++ pfatal ("Can't open stream for file %s", quotearg (TMPEDNAME)); + } + + for (;;) { +@@ -2449,8 +2449,7 @@ do_ed_script (char const *inname, char const *outname, + write_fatal (); + + if (lseek (tmpfd, 0, SEEK_SET) == -1) +- pfatal ("Can't rewind to the beginning of file %s", quotearg (tmpname)); +- ++ pfatal ("Can't rewind to the beginning of file %s", quotearg (TMPEDNAME)); + if (! dry_run && ! skip_rest_of_patch) { + int exclusive = *outname_needs_removal ? 0 : O_EXCL; + *outname_needs_removal = true; +@@ -2482,7 +2481,6 @@ do_ed_script (char const *inname, char const *outname, + } + + fclose (tmpfp); +- safe_unlink (tmpname); + + if (ofp) + { +-- +2.17.0 + |