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author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2014-05-13 18:18:15 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2014-05-13 18:18:15 -0300 |
commit | f995f2c8e4ea48c55b3c5a2be352f14f145cd357 (patch) | |
tree | ad668b95f7d3c6c314573f88a2055c7ce2b2906f /libre/linux-libre-lts | |
parent | 106c7944a7dccf6d19efeb2858aa95ce864ecf05 (diff) | |
download | abslibre-f995f2c8e4ea48c55b3c5a2be352f14f145cd357.tar.gz abslibre-f995f2c8e4ea48c55b3c5a2be352f14f145cd357.tar.bz2 abslibre-f995f2c8e4ea48c55b3c5a2be352f14f145cd357.zip |
linux-libre-lts-3.10.40-1: updating version
Diffstat (limited to 'libre/linux-libre-lts')
-rw-r--r-- | libre/linux-libre-lts/0001-n_tty-Fix-n_tty_write-crash-when-echoing-in-raw-mode.patch | 83 | ||||
-rw-r--r-- | libre/linux-libre-lts/PKGBUILD | 13 |
2 files changed, 4 insertions, 92 deletions
diff --git a/libre/linux-libre-lts/0001-n_tty-Fix-n_tty_write-crash-when-echoing-in-raw-mode.patch b/libre/linux-libre-lts/0001-n_tty-Fix-n_tty_write-crash-when-echoing-in-raw-mode.patch deleted file mode 100644 index cb659dc7d..000000000 --- a/libre/linux-libre-lts/0001-n_tty-Fix-n_tty_write-crash-when-echoing-in-raw-mode.patch +++ /dev/null @@ -1,83 +0,0 @@ -From 4291086b1f081b869c6d79e5b7441633dc3ace00 Mon Sep 17 00:00:00 2001 -From: Peter Hurley <peter@hurleysoftware.com> -Date: Sat, 3 May 2014 14:04:59 +0200 -Subject: [PATCH] n_tty: Fix n_tty_write crash when echoing in raw mode - -The tty atomic_write_lock does not provide an exclusion guarantee for -the tty driver if the termios settings are LECHO & !OPOST. And since -it is unexpected and not allowed to call TTY buffer helpers like -tty_insert_flip_string concurrently, this may lead to crashes when -concurrect writers call pty_write. In that case the following two -writers: -* the ECHOing from a workqueue and -* pty_write from the process -race and can overflow the corresponding TTY buffer like follows. - -If we look into tty_insert_flip_string_fixed_flag, there is: - int space = __tty_buffer_request_room(port, goal, flags); - struct tty_buffer *tb = port->buf.tail; - ... - memcpy(char_buf_ptr(tb, tb->used), chars, space); - ... - tb->used += space; - -so the race of the two can result in something like this: - A B -__tty_buffer_request_room - __tty_buffer_request_room -memcpy(buf(tb->used), ...) -tb->used += space; - memcpy(buf(tb->used), ...) ->BOOM - -B's memcpy is past the tty_buffer due to the previous A's tb->used -increment. - -Since the N_TTY line discipline input processing can output -concurrently with a tty write, obtain the N_TTY ldisc output_lock to -serialize echo output with normal tty writes. This ensures the tty -buffer helper tty_insert_flip_string is not called concurrently and -everything is fine. - -Note that this is nicely reproducible by an ordinary user using -forkpty and some setup around that (raw termios + ECHO). And it is -present in kernels at least after commit -d945cb9cce20ac7143c2de8d88b187f62db99bdc (pty: Rework the pty layer to -use the normal buffering logic) in 2.6.31-rc3. - -js: add more info to the commit log -js: switch to bool -js: lock unconditionally -js: lock only the tty->ops->write call - -References: CVE-2014-0196 -Reported-and-tested-by: Jiri Slaby <jslaby@suse.cz> -Signed-off-by: Peter Hurley <peter@hurleysoftware.com> -Signed-off-by: Jiri Slaby <jslaby@suse.cz> -Cc: Linus Torvalds <torvalds@linux-foundation.org> -Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> -Cc: <stable@vger.kernel.org> -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - drivers/tty/n_tty.c | 4 ++++ - 1 file changed, 4 insertions(+) - -diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c -index 41fe8a0..fe9d129 100644 ---- a/drivers/tty/n_tty.c -+++ b/drivers/tty/n_tty.c -@@ -2353,8 +2353,12 @@ static ssize_t n_tty_write(struct tty_struct *tty, struct file *file, - if (tty->ops->flush_chars) - tty->ops->flush_chars(tty); - } else { -+ struct n_tty_data *ldata = tty->disc_data; -+ - while (nr > 0) { -+ mutex_lock(&ldata->output_lock); - c = tty->ops->write(tty, b, nr); -+ mutex_unlock(&ldata->output_lock); - if (c < 0) { - retval = c; - goto break_out; --- -1.9.2 - diff --git a/libre/linux-libre-lts/PKGBUILD b/libre/linux-libre-lts/PKGBUILD index 44978f9ba..39e7da700 100644 --- a/libre/linux-libre-lts/PKGBUILD +++ b/libre/linux-libre-lts/PKGBUILD @@ -1,4 +1,4 @@ -# $Id: PKGBUILD 212332 2014-05-13 08:23:48Z bpiotrowski $ +# $Id: PKGBUILD 212335 2014-05-13 13:51:20Z bpiotrowski $ # Maintainer: Tobias Powalowski <tpowa@archlinux.org> # Maintainer: Thomas Baechler <thomas@archlinux.org> # Maintainer (Parabola): André Silva <emulatorman@parabola.nu> @@ -10,9 +10,9 @@ pkgbase=linux-libre-lts # Build stock -LIBRE-LTS kernel #pkgbase=linux-libre-custom # Build kernel with a different name _basekernel=3.10 -_sublevel=39 +_sublevel=40 pkgver=${_basekernel}.${_sublevel} -pkgrel=2 +pkgrel=1 _lxopkgver=${_basekernel}.39 # nearly always the same as pkgver arch=('i686' 'x86_64' 'mips64el') url="http://linux-libre.fsfla.org/" @@ -30,10 +30,9 @@ source=("http://linux-libre.fsfla.org/pub/linux-libre/releases/${_basekernel}-gn 'boot-logo.patch' 'change-default-console-loglevel.patch' 'criu-no-expert.patch' - '0001-n_tty-Fix-n_tty_write-crash-when-echoing-in-raw-mode.patch' "http://www.linux-libre.fsfla.org/pub/linux-libre/lemote/gnewsense/pool/debuginfo/linux-patches-${_lxopkgver}-gnu_0loongsonlibre_mipsel.tar.xz") md5sums=('d562fd52580a3b6b18b6eeb5921d1d5c' - '0663686c1e5495b999a175aa7809ea92' + '778a6856efdd2377f6073326ef2d3996' '85ce008eaacbb2fc54b81116d35cf946' '16867e648e4b9f89bec949cb643888c2' 'c072b17032e80debc6a8626299245d46' @@ -42,7 +41,6 @@ md5sums=('d562fd52580a3b6b18b6eeb5921d1d5c' '04b21c79df0a952c22d681dd4f4562df' 'f3def2cefdcbb954c21d8505d23cc83c' 'd50c1ac47394e9aec637002ef3392bd1' - 'da00b78faadbe939943b32305e4c68f8' '64e128839d1e32bd0789cf1b3fc3d64b') if [ "$CARCH" != "mips64el" ]; then # don't use the Loongson-specific patches on non-mips64el arches. @@ -75,9 +73,6 @@ prepare() { # patch from fedora patch -Np1 -i "${srcdir}/criu-no-expert.patch" - # CVE-2014-0196 - patch -Np1 -i "${srcdir}/0001-n_tty-Fix-n_tty_write-crash-when-echoing-in-raw-mode.patch" - if [ "$CARCH" == "mips64el" ]; then sed -i "s|^EXTRAVERSION.*|EXTRAVERSION =-libre-lts|" Makefile sed -r "s|^( SUBLEVEL = ).*|\1$_sublevel|" \ |