diff options
Diffstat (limited to 'patches/source/xorg-server-xwayland')
3 files changed, 98 insertions, 1 deletions
diff --git a/patches/source/xorg-server-xwayland/CVE-2022-3550.patch b/patches/source/xorg-server-xwayland/CVE-2022-3550.patch new file mode 100644 index 000000000..3461b0749 --- /dev/null +++ b/patches/source/xorg-server-xwayland/CVE-2022-3550.patch @@ -0,0 +1,34 @@ +From 11beef0b7f1ed290348e45618e5fa0d2bffcb72e Mon Sep 17 00:00:00 2001 +From: Peter Hutterer <peter.hutterer@who-t.net> +Date: Tue, 5 Jul 2022 12:06:20 +1000 +Subject: xkb: proof GetCountedString against request length attacks + +GetCountedString did a check for the whole string to be within the +request buffer but not for the initial 2 bytes that contain the length +field. A swapped client could send a malformed request to trigger a +swaps() on those bytes, writing into random memory. + +Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> +--- + xkb/xkb.c | 5 +++++ + 1 file changed, 5 insertions(+) + +diff --git a/xkb/xkb.c b/xkb/xkb.c +index f42f59ef3..1841cff26 100644 +--- a/xkb/xkb.c ++++ b/xkb/xkb.c +@@ -5137,6 +5137,11 @@ _GetCountedString(char **wire_inout, ClientPtr client, char **str) + CARD16 len; + + wire = *wire_inout; ++ ++ if (client->req_len < ++ bytes_to_int32(wire + 2 - (char *) client->requestBuffer)) ++ return BadValue; ++ + len = *(CARD16 *) wire; + if (client->swapped) { + swaps(&len); +-- +cgit v1.2.1 + diff --git a/patches/source/xorg-server-xwayland/CVE-2022-3551.patch b/patches/source/xorg-server-xwayland/CVE-2022-3551.patch new file mode 100644 index 000000000..e41db9286 --- /dev/null +++ b/patches/source/xorg-server-xwayland/CVE-2022-3551.patch @@ -0,0 +1,59 @@ +From 18f91b950e22c2a342a4fbc55e9ddf7534a707d2 Mon Sep 17 00:00:00 2001 +From: Peter Hutterer <peter.hutterer@who-t.net> +Date: Wed, 13 Jul 2022 11:23:09 +1000 +Subject: xkb: fix some possible memleaks in XkbGetKbdByName + +GetComponentByName returns an allocated string, so let's free that if we +fail somewhere. + +Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> +--- + xkb/xkb.c | 26 ++++++++++++++++++++------ + 1 file changed, 20 insertions(+), 6 deletions(-) + +diff --git a/xkb/xkb.c b/xkb/xkb.c +index 4692895db..b79a269e3 100644 +--- a/xkb/xkb.c ++++ b/xkb/xkb.c +@@ -5935,18 +5935,32 @@ ProcXkbGetKbdByName(ClientPtr client) + xkb = dev->key->xkbInfo->desc; + status = Success; + str = (unsigned char *) &stuff[1]; +- if (GetComponentSpec(&str, TRUE, &status)) /* keymap, unsupported */ +- return BadMatch; ++ { ++ char *keymap = GetComponentSpec(&str, TRUE, &status); /* keymap, unsupported */ ++ if (keymap) { ++ free(keymap); ++ return BadMatch; ++ } ++ } + names.keycodes = GetComponentSpec(&str, TRUE, &status); + names.types = GetComponentSpec(&str, TRUE, &status); + names.compat = GetComponentSpec(&str, TRUE, &status); + names.symbols = GetComponentSpec(&str, TRUE, &status); + names.geometry = GetComponentSpec(&str, TRUE, &status); +- if (status != Success) ++ if (status == Success) { ++ len = str - ((unsigned char *) stuff); ++ if ((XkbPaddedSize(len) / 4) != stuff->length) ++ status = BadLength; ++ } ++ ++ if (status != Success) { ++ free(names.keycodes); ++ free(names.types); ++ free(names.compat); ++ free(names.symbols); ++ free(names.geometry); + return status; +- len = str - ((unsigned char *) stuff); +- if ((XkbPaddedSize(len) / 4) != stuff->length) +- return BadLength; ++ } + + CHK_MASK_LEGAL(0x01, stuff->want, XkbGBN_AllComponentsMask); + CHK_MASK_LEGAL(0x02, stuff->need, XkbGBN_AllComponentsMask); +-- +cgit v1.2.1 + diff --git a/patches/source/xorg-server-xwayland/xorg-server-xwayland.SlackBuild b/patches/source/xorg-server-xwayland/xorg-server-xwayland.SlackBuild index fb119aa22..8be825f3c 100755 --- a/patches/source/xorg-server-xwayland/xorg-server-xwayland.SlackBuild +++ b/patches/source/xorg-server-xwayland/xorg-server-xwayland.SlackBuild @@ -25,7 +25,7 @@ cd $(dirname $0) ; CWD=$(pwd) PKGNAM=xorg-server-xwayland SRCNAM=xwayland VERSION=${VERSION:-$(echo $SRCNAM-*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev)} -BUILD=${BUILD:-2_slack15.0} +BUILD=${BUILD:-3_slack15.0} # Default font paths to be used by the X server: DEF_FONTPATH="/usr/share/fonts/misc,/usr/share/fonts/local,/usr/share/fonts/TTF,/usr/share/fonts/OTF,/usr/share/fonts/Type1,/usr/share/fonts/CID,/usr/share/fonts/75dpi/:unscaled,/usr/share/fonts/100dpi/:unscaled,/usr/share/fonts/75dpi,/usr/share/fonts/100dpi,/usr/share/fonts/cyrillic" @@ -85,6 +85,10 @@ zcat $CWD/0001-f1070c01d616c5f21f939d5ebc533738779451ac.patch.gz | patch -p1 --v zcat $CWD/0002-dd8caf39e9e15d8f302e54045dd08d8ebf1025dc.patch.gz | patch -p1 --verbose || exit 1 zcat $CWD/0003-6907b6ea2b4ce949cb07271f5b678d5966d9df42.patch.gz | patch -p1 --verbose || exit 1 +# Patch more security issues: +zcat $CWD/CVE-2022-3550.patch.gz | patch -p1 --verbose || exit 1 +zcat $CWD/CVE-2022-3551.patch.gz | patch -p1 --verbose || exit 1 + # Configure, build, and install: export CFLAGS="$SLKCFLAGS" export CXXFLAGS="$SLKCFLAGS" |