Source: git://sourceware.org/git/binutils-gdb.git Tracking -- https://sourceware.org/bugzilla/show_bug.cgi?id=26945
Backported upstream commit d3edaa91d4cf7202ec14342410194841e2f67f12 to binutils-2.34 source, along with commit id dependencies (8e03235147a9e774d3ba084e93c2daaa94d1cec, 365f5fb6d0f0da83817431a275e99e6f6babbe04 and 8b69e61d4be276bb862698aaafddc3e779d23c8f). Upstream-Status: Backport [https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=d3edaa91d4cf7202ec14342410194841e2f67f12] Signed-off-by: Vinay Kumar <vinay.m.e...@gmail.com> --- Backported commit id "8b69e61d4be276bb862698aaafddc3e779d23c8f" to fix error with mingw build. And the patch is verified by building Linux and Mingw toolchains for Arm target. .../binutils/binutils-2.34.inc | 1 + .../binutils/binutils/CVE-2021-20197.patch | 572 ++++++++++++++++++ 2 files changed, 573 insertions(+) create mode 100644 meta/recipes-devtools/binutils/binutils/CVE-2021-20197.patch diff --git a/meta/recipes-devtools/binutils/binutils-2.34.inc b/meta/recipes-devtools/binutils/binutils-2.34.inc index f557fe970c..a586faf5ab 100644 --- a/meta/recipes-devtools/binutils/binutils-2.34.inc +++ b/meta/recipes-devtools/binutils/binutils-2.34.inc @@ -46,5 +46,6 @@ SRC_URI = "\ file://0001-gas-improve-reproducibility-for-stabs-debugging-data.patch \ file://CVE-2020-16592.patch \ file://CVE-2020-16598.patch \ + file://CVE-2021-20197.patch \ " S = "${WORKDIR}/git" diff --git a/meta/recipes-devtools/binutils/binutils/CVE-2021-20197.patch b/meta/recipes-devtools/binutils/binutils/CVE-2021-20197.patch new file mode 100644 index 0000000000..423814f98d --- /dev/null +++ b/meta/recipes-devtools/binutils/binutils/CVE-2021-20197.patch @@ -0,0 +1,572 @@ +From d3edaa91d4cf7202ec14342410194841e2f67f12 Mon Sep 17 00:00:00 2001 +From: Alan Modra <amo...@gmail.com> +Date: Fri, 26 Feb 2021 11:30:32 +1030 +Subject: [PATCH v2] Reinstate various pieces backed out from smart_rename changes + +In the interests of a stable release various last minute smart_rename +patches were backed out of the 2.36 branch. The main reason to +reinstate some of those backed out changes here is to make necessary +followup fixes to commit 8e03235147a9 simple cherry-picks from +mainline. A secondary reason is that ar -M support isn't fixed for +pr26945 without this patch. + + PR 26945 + * ar.c: Don't include libbfd.h. + (write_archive): Replace xmalloc+strcpy with xstrdup. + * arsup.c (temp_name, real_ofd): New static variables. + (ar_open): Use make_tempname and bfd_fdopenw. + (ar_save): Adjust to suit ar_open changes. + * objcopy.c: Don't include libbfd.h. + * rename.c: Rename and reorder variables. + +(cherry picked from commit 95b91a043aeaeb546d2fea556d84a2de1e917770) + +Upstream-Status: Backport [https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=d3edaa91d4cf7202ec14342410194841e2f67f12] +CVE: CVE-2021-20197 +Signed-off-by: Vinay Kumar <vinay.m.e...@gmail.com> +--- + bfd/bfd-in2.h | 2 + + bfd/opncls.c | 33 ++++++++++ + binutils/ar.c | 15 +++-- + binutils/arsup.c | 37 ++++++++---- + binutils/bucomm.c | 4 +- + binutils/bucomm.h | 5 +- + binutils/objcopy.c | 37 +++++++----- + binutils/rename.c | 148 +++++++++++---------------------------------- + 8 files changed, 133 insertions(+), 148 deletions(-) + +diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h +index 2e453c50c18..e53f54a8ab7 100644 +--- a/bfd/bfd-in2.h ++++ b/bfd/bfd-in2.h +@@ -588,6 +588,8 @@ bfd *bfd_openr (const char *filename, const char *target); + + bfd *bfd_fdopenr (const char *filename, const char *target, int fd); + ++bfd *bfd_fdopenw (const char *filename, const char *target, int fd); ++ + bfd *bfd_openstreamr (const char * filename, const char * target, + void * stream); + +diff --git a/bfd/opncls.c b/bfd/opncls.c +index a03ad51c8fa..f9da97ed710 100644 +--- a/bfd/opncls.c ++++ b/bfd/opncls.c +@@ -370,6 +370,39 @@ bfd_fdopenr (const char *filename, const char *target, int fd) + return bfd_fopen (filename, target, mode, fd); + } + ++/* ++FUNCTION ++ bfd_fdopenw ++ ++SYNOPSIS ++ bfd *bfd_fdopenw (const char *filename, const char *target, int fd); ++ ++DESCRIPTION ++ <<bfd_fdopenw>> is exactly like <<bfd_fdopenr>> with the exception that ++ the resulting BFD is suitable for output. ++*/ ++ ++bfd * ++bfd_fdopenw (const char *filename, const char *target, int fd) ++{ ++ bfd *out = bfd_fdopenr (filename, target, fd); ++ ++ if (out != NULL) ++ { ++ if (!bfd_write_p (out)) ++ { ++ close (fd); ++ _bfd_delete_bfd (out); ++ out = NULL; ++ bfd_set_error (bfd_error_invalid_operation); ++ } ++ else ++ out->direction = write_direction; ++ } ++ ++ return out; ++} ++ + /* + FUNCTION + bfd_openstreamr +diff --git a/binutils/ar.c b/binutils/ar.c +index 1057db9980e..c33a11e0d70 100644 +--- a/binutils/ar.c ++++ b/binutils/ar.c +@@ -1195,20 +1195,23 @@ write_archive (bfd *iarch) + bfd *obfd; + char *old_name, *new_name; + bfd *contents_head = iarch->archive_next; ++ int ofd = -1; + +- old_name = (char *) xmalloc (strlen (bfd_get_filename (iarch)) + 1); +- strcpy (old_name, bfd_get_filename (iarch)); +- new_name = make_tempname (old_name); ++ old_name = xstrdup (bfd_get_filename (iarch)); ++ new_name = make_tempname (old_name, &ofd); + + if (new_name == NULL) + bfd_fatal (_("could not create temporary file whilst writing archive")); + + output_filename = new_name; + +- obfd = bfd_openw (new_name, bfd_get_target (iarch)); ++ obfd = bfd_fdopenw (new_name, bfd_get_target (iarch), ofd); + + if (obfd == NULL) +- bfd_fatal (old_name); ++ { ++ close (ofd); ++ bfd_fatal (old_name); ++ } + + output_bfd = obfd; + +@@ -1246,7 +1249,7 @@ write_archive (bfd *iarch) + /* We don't care if this fails; we might be creating the archive. */ + bfd_close (iarch); + +- if (smart_rename (new_name, old_name, 0) != 0) ++ if (smart_rename (new_name, old_name, NULL) != 0) + xexit (1); + free (old_name); + free (new_name); +diff --git a/binutils/arsup.c b/binutils/arsup.c +index 00967c972cd..b8ae4f7ec1a 100644 +--- a/binutils/arsup.c ++++ b/binutils/arsup.c +@@ -42,6 +42,8 @@ extern int deterministic; + + static bfd *obfd; + static char *real_name; ++static char *temp_name; ++static int real_ofd; + static FILE *outfile; + + static void +@@ -149,27 +151,24 @@ maybequit (void) + void + ar_open (char *name, int t) + { +- char *tname; +- const char *bname = lbasename (name); +- real_name = name; ++ real_name = xstrdup (name); ++ temp_name = make_tempname (real_name, &real_ofd); + +- /* Prepend tmp- to the beginning, to avoid file-name clashes after +- truncation on filesystems with limited namespaces (DOS). */ +- if (asprintf (&tname, "%.*stmp-%s", (int) (bname - name), name, bname) == -1) ++ if (temp_name == NULL) + { +- fprintf (stderr, _("%s: Can't allocate memory for temp name (%s)\n"), ++ fprintf (stderr, _("%s: Can't open temporary file (%s)\n"), + program_name, strerror(errno)); + maybequit (); + return; + } + +- obfd = bfd_openw (tname, NULL); ++ obfd = bfd_fdopenw (temp_name, NULL, real_ofd); + + if (!obfd) + { + fprintf (stderr, + _("%s: Can't open output archive %s\n"), +- program_name, tname); ++ program_name, temp_name); + + maybequit (); + } +@@ -344,16 +343,30 @@ ar_save (void) + } + else + { +- char *ofilename = xstrdup (bfd_get_filename (obfd)); ++ struct stat target_stat; + + if (deterministic > 0) + obfd->flags |= BFD_DETERMINISTIC_OUTPUT; + + bfd_close (obfd); + +- smart_rename (ofilename, real_name, 0); ++ if (stat (real_name, &target_stat) != 0) ++ { ++ /* The temp file created in ar_open has mode 0600 as per mkstemp. ++ Create the real empty output file here so smart_rename will ++ update the mode according to the process umask. */ ++ obfd = bfd_openw (real_name, NULL); ++ if (obfd != NULL) ++ { ++ bfd_set_format (obfd, bfd_archive); ++ bfd_close (obfd); ++ } ++ } ++ ++ smart_rename (temp_name, real_name, NULL); + obfd = 0; +- free (ofilename); ++ free (temp_name); ++ free (real_name); + } + } + +diff --git a/binutils/bucomm.c b/binutils/bucomm.c +index 9e6a02843e6..53244201f89 100644 +--- a/binutils/bucomm.c ++++ b/binutils/bucomm.c +@@ -532,7 +532,7 @@ template_in_dir (const char *path) + as FILENAME. */ + + char * +-make_tempname (const char *filename) ++make_tempname (const char *filename, int *ofd) + { + char *tmpname = template_in_dir (filename); + int fd; +@@ -550,7 +550,7 @@ make_tempname (const char *filename) + free (tmpname); + return NULL; + } +- close (fd); ++ *ofd = fd; + return tmpname; + } + +diff --git a/binutils/bucomm.h b/binutils/bucomm.h +index d8318343f78..2b164e0af68 100644 +--- a/binutils/bucomm.h ++++ b/binutils/bucomm.h +@@ -51,7 +51,7 @@ int display_info (void); + + void print_arelt_descr (FILE *, bfd *, bfd_boolean, bfd_boolean); + +-char *make_tempname (const char *); ++char *make_tempname (const char *, int *); + char *make_tempdir (const char *); + + bfd_vma parse_vma (const char *, const char *); +@@ -71,7 +71,8 @@ extern void print_version (const char *); + /* In rename.c. */ + extern void set_times (const char *, const struct stat *); + +-extern int smart_rename (const char *, const char *, int); ++extern int smart_rename (const char *, const char *, struct stat *); ++ + + /* In libiberty. */ + void *xmalloc (size_t); +diff --git a/binutils/objcopy.c b/binutils/objcopy.c +index 212e25144e6..5ccbd926610 100644 +--- a/binutils/objcopy.c ++++ b/binutils/objcopy.c +@@ -3682,7 +3682,7 @@ set_long_section_mode (bfd *output_bfd, bfd *input_bfd, enum long_section_name_h + /* The top-level control. */ + + static void +-copy_file (const char *input_filename, const char *output_filename, ++copy_file (const char *input_filename, const char *output_filename, int ofd, + const char *input_target, const char *output_target, + const bfd_arch_info_type *input_arch) + { +@@ -3757,9 +3757,14 @@ copy_file (const char *input_filename, const char *output_filename, + else + force_output_target = TRUE; + +- obfd = bfd_openw (output_filename, output_target); ++ if (ofd >= 0) ++ obfd = bfd_fdopenw (output_filename, output_target, ofd); ++ else ++ obfd = bfd_openw (output_filename, output_target); ++ + if (obfd == NULL) + { ++ close (ofd); + bfd_nonfatal_message (output_filename, NULL, NULL, NULL); + status = 1; + return; +@@ -3787,13 +3792,19 @@ copy_file (const char *input_filename, const char *output_filename, + if (output_target == NULL) + output_target = bfd_get_target (ibfd); + +- obfd = bfd_openw (output_filename, output_target); ++ if (ofd >= 0) ++ obfd = bfd_fdopenw (output_filename, output_target, ofd); ++ else ++ obfd = bfd_openw (output_filename, output_target); ++ + if (obfd == NULL) + { ++ close (ofd); + bfd_nonfatal_message (output_filename, NULL, NULL, NULL); + status = 1; + return; + } ++ + /* This is a no-op on non-Coff targets. */ + set_long_section_mode (obfd, ibfd, long_section_names); + +@@ -4746,6 +4757,7 @@ strip_main (int argc, char *argv[]) + int hold_status = status; + struct stat statbuf; + char *tmpname; ++ int tmpfd = -1; + + if (get_file_size (argv[i]) < 1) + { +@@ -4760,7 +4772,7 @@ strip_main (int argc, char *argv[]) + + if (output_file == NULL + || filename_cmp (argv[i], output_file) == 0) +- tmpname = make_tempname (argv[i]); ++ tmpname = make_tempname (argv[i], &tmpfd); + else + tmpname = output_file; + +@@ -4773,15 +4785,13 @@ strip_main (int argc, char *argv[]) + } + + status = 0; +- copy_file (argv[i], tmpname, input_target, output_target, NULL); ++ copy_file (argv[i], tmpname, tmpfd, input_target, output_target, NULL); + if (status == 0) + { +- if (preserve_dates) +- set_times (tmpname, &statbuf); + if (output_file != tmpname) + status = (smart_rename (tmpname, + output_file ? output_file : argv[i], +- preserve_dates) != 0); ++ preserve_dates ? &statbuf : NULL) != 0); + if (status == 0) + status = hold_status; + } +@@ -4993,7 +5003,7 @@ copy_main (int argc, char *argv[]) + bfd_boolean formats_info = FALSE; + bfd_boolean use_globalize = FALSE; + bfd_boolean use_keep_global = FALSE; +- int c; ++ int c, tmpfd = -1; + struct stat statbuf; + const bfd_arch_info_type *input_arch = NULL; + +@@ -5839,7 +5849,7 @@ copy_main (int argc, char *argv[]) + are the same, then create a temp and rename the result into the input. */ + if (output_filename == NULL + || filename_cmp (input_filename, output_filename) == 0) +- tmpname = make_tempname (input_filename); ++ tmpname = make_tempname (input_filename, &tmpfd); + else + tmpname = output_filename; + +@@ -5847,14 +5857,13 @@ copy_main (int argc, char *argv[]) + fatal (_("warning: could not create temporary file whilst copying '%s', (error: %s)"), + input_filename, strerror (errno)); + +- copy_file (input_filename, tmpname, input_target, output_target, input_arch); ++ copy_file (input_filename, tmpname, tmpfd, input_target, output_target, ++ input_arch); + if (status == 0) + { +- if (preserve_dates) +- set_times (tmpname, &statbuf); + if (tmpname != output_filename) + status = (smart_rename (tmpname, input_filename, +- preserve_dates) != 0); ++ preserve_dates ? &statbuf : NULL) != 0); + } + else + unlink_if_ordinary (tmpname); +diff --git a/binutils/rename.c b/binutils/rename.c +index bf3b68d0462..07d44d0f314 100644 +--- a/binutils/rename.c ++++ b/binutils/rename.c +@@ -24,14 +24,9 @@ + + #ifdef HAVE_GOOD_UTIME_H + #include <utime.h> +-#else /* ! HAVE_GOOD_UTIME_H */ +-#ifdef HAVE_UTIMES ++#elif defined HAVE_UTIMES + #include <sys/time.h> +-#endif /* HAVE_UTIMES */ +-#endif /* ! HAVE_GOOD_UTIME_H */ +- +-#if ! defined (_WIN32) || defined (__CYGWIN32__) +-static int simple_copy (const char *, const char *); ++#endif + + /* The number of bytes to copy at once. */ + #define COPY_BUF 8192 +@@ -82,7 +77,6 @@ simple_copy (const char *from, const char *to) + } + return 0; + } +-#endif /* __CYGWIN32__ or not _WIN32 */ + + /* Set the times of the file DESTINATION to be the same as those in + STATBUF. */ +@@ -91,122 +85,52 @@ void + set_times (const char *destination, const struct stat *statbuf) + { + int result; +- +- { + #ifdef HAVE_GOOD_UTIME_H +- struct utimbuf tb; +- +- tb.actime = statbuf->st_atime; +- tb.modtime = statbuf->st_mtime; +- result = utime (destination, &tb); +-#else /* ! HAVE_GOOD_UTIME_H */ +-#ifndef HAVE_UTIMES +- long tb[2]; +- +- tb[0] = statbuf->st_atime; +- tb[1] = statbuf->st_mtime; +- result = utime (destination, tb); +-#else /* HAVE_UTIMES */ +- struct timeval tv[2]; +- +- tv[0].tv_sec = statbuf->st_atime; +- tv[0].tv_usec = 0; +- tv[1].tv_sec = statbuf->st_mtime; +- tv[1].tv_usec = 0; +- result = utimes (destination, tv); +-#endif /* HAVE_UTIMES */ +-#endif /* ! HAVE_GOOD_UTIME_H */ +- } ++ struct utimbuf tb; ++ ++ tb.actime = statbuf->st_atime; ++ tb.modtime = statbuf->st_mtime; ++ result = utime (destination, &tb); ++#elif defined HAVE_UTIMES ++ struct timeval tv[2]; ++ ++ tv[0].tv_sec = statbuf->st_atime; ++ tv[0].tv_usec = 0; ++ tv[1].tv_sec = statbuf->st_mtime; ++ tv[1].tv_usec = 0; ++ result = utimes (destination, tv); ++#else ++ long tb[2]; ++ ++ tb[0] = statbuf->st_atime; ++ tb[1] = statbuf->st_mtime; ++ result = utime (destination, tb); ++#endif + + if (result != 0) + non_fatal (_("%s: cannot set time: %s"), destination, strerror (errno)); + } + +-#ifndef S_ISLNK +-#ifdef S_IFLNK +-#define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) +-#else +-#define S_ISLNK(m) 0 +-#define lstat stat +-#endif +-#endif +- +-/* Rename FROM to TO, copying if TO is a link. +- Return 0 if ok, -1 if error. */ ++/* Copy FROM to TO. TARGET_STAT has the file status that, if non-NULL, ++ is used to fix up timestamps. Return 0 if ok, -1 if error. ++ At one time this function renamed files, but file permissions are ++ tricky to update given the number of different schemes used by ++ various systems. So now we just copy. */ + + int +-smart_rename (const char *from, const char *to, int preserve_dates ATTRIBUTE_UNUSED) ++smart_rename (const char *from, const char *to, ++ struct stat *target_stat) + { +- bfd_boolean exists; +- struct stat s; +- int ret = 0; +- +- exists = lstat (to, &s) == 0; +- +-#if defined (_WIN32) && !defined (__CYGWIN32__) +- /* Win32, unlike unix, will not erase `to' in `rename(from, to)' but +- fail instead. Also, chown is not present. */ ++ int ret; + +- if (exists) +- remove (to); +- +- ret = rename (from, to); ++ ret = simple_copy (from, to); + if (ret != 0) +- { +- /* We have to clean up here. */ +- non_fatal (_("unable to rename '%s'; reason: %s"), to, strerror (errno)); +- unlink (from); +- } +-#else +- /* Use rename only if TO is not a symbolic link and has +- only one hard link, and we have permission to write to it. */ +- if (! exists +- || (!S_ISLNK (s.st_mode) +- && S_ISREG (s.st_mode) +- && (s.st_mode & S_IWUSR) +- && s.st_nlink == 1) +- ) +- { +- ret = rename (from, to); +- if (ret == 0) +- { +- if (exists) +- { +- /* Try to preserve the permission bits and ownership of +- TO. First get the mode right except for the setuid +- bit. Then change the ownership. Then fix the setuid +- bit. We do the chmod before the chown because if the +- chown succeeds, and we are a normal user, we won't be +- able to do the chmod afterward. We don't bother to +- fix the setuid bit first because that might introduce +- a fleeting security problem, and because the chown +- will clear the setuid bit anyhow. We only fix the +- setuid bit if the chown succeeds, because we don't +- want to introduce an unexpected setuid file owned by +- the user running objcopy. */ +- chmod (to, s.st_mode & 0777); +- if (chown (to, s.st_uid, s.st_gid) >= 0) +- chmod (to, s.st_mode & 07777); +- } +- } +- else +- { +- /* We have to clean up here. */ +- non_fatal (_("unable to rename '%s'; reason: %s"), to, strerror (errno)); +- unlink (from); +- } +- } +- else +- { +- ret = simple_copy (from, to); +- if (ret != 0) +- non_fatal (_("unable to copy file '%s'; reason: %s"), to, strerror (errno)); ++ non_fatal (_("unable to copy file '%s'; reason: %s"), ++ to, strerror (errno)); + +- if (preserve_dates) +- set_times (to, &s); +- unlink (from); +- } +-#endif /* _WIN32 && !__CYGWIN32__ */ ++ if (target_stat != NULL) ++ set_times (to, target_stat); ++ unlink (from); + + return ret; + } +-- +2.17.1 + -- 2.17.1
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