When the code is compiled with "-fstack-protector-strong -D_FORTIFY_SOURCE=2", everytime ftpfd is asked for a non existent file, it crashes with the following error:
*** buffer overflow detected ***: Aborted This seems to be a bug/feature of gcc. A bug has been open on their bugzilla, and also inetutils have been posted with the proposed patch. Without this patch, pxelinux fails to boot because it keeps asking the server for the pxelinux.cfg/00-01-02-03-04 and never jumps to /default. Signed-off-by: Ricardo Ribalda Delgado <rica...@ribalda.com> --- .../inetutils/fix-buffer-fortify-tfpt.patch | 25 +++++++++++++++++++ .../inetutils/inetutils_1.9.4.bb | 1 + 2 files changed, 26 insertions(+) create mode 100644 meta/recipes-connectivity/inetutils/inetutils/fix-buffer-fortify-tfpt.patch diff --git a/meta/recipes-connectivity/inetutils/inetutils/fix-buffer-fortify-tfpt.patch b/meta/recipes-connectivity/inetutils/inetutils/fix-buffer-fortify-tfpt.patch new file mode 100644 index 0000000000..a91913cb51 --- /dev/null +++ b/meta/recipes-connectivity/inetutils/inetutils/fix-buffer-fortify-tfpt.patch @@ -0,0 +1,25 @@ +tftpd: Fix abort on error path + +When trying to fetch a non existent file, the app crashes with: + +*** buffer overflow detected ***: +Aborted + + +Upstream-Status: Submitted [https://www.mail-archive.com/bug-inetutils@gnu.org/msg03036.html https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91205] +Signed-off-by: Ricardo Ribalda Delgado <rica...@ribalda.com> +diff --git a/src/tftpd.c b/src/tftpd.c +index 56002a0..144012f 100644 +--- a/src/tftpd.c ++++ b/src/tftpd.c +@@ -864,9 +864,8 @@ nak (int error) + pe->e_msg = strerror (error - 100); + tp->th_code = EUNDEF; /* set 'undef' errorcode */ + } +- strcpy (tp->th_msg, pe->e_msg); + length = strlen (pe->e_msg); +- tp->th_msg[length] = '\0'; ++ memcpy(tp->th_msg, pe->e_msg, length + 1); + length += 5; + if (sendto (peer, buf, length, 0, (struct sockaddr *) &from, fromlen) != length) + syslog (LOG_ERR, "nak: %m\n"); diff --git a/meta/recipes-connectivity/inetutils/inetutils_1.9.4.bb b/meta/recipes-connectivity/inetutils/inetutils_1.9.4.bb index ac2e017d8b..684fbe09e1 100644 --- a/meta/recipes-connectivity/inetutils/inetutils_1.9.4.bb +++ b/meta/recipes-connectivity/inetutils/inetutils_1.9.4.bb @@ -22,6 +22,7 @@ SRC_URI = "${GNU_MIRROR}/inetutils/inetutils-${PV}.tar.gz \ file://inetutils-1.9-PATH_PROCNET_DEV.patch \ file://inetutils-only-check-pam_appl.h-when-pam-enabled.patch \ file://0001-rcp-fix-to-work-with-large-files.patch \ + file://fix-buffer-fortify-tfpt.patch \ " SRC_URI[md5sum] = "04852c26c47cc8c6b825f2b74f191f52" -- 2.20.1 -- _______________________________________________ Openembedded-core mailing list Openembedded-core@lists.openembedded.org http://lists.openembedded.org/mailman/listinfo/openembedded-core
