From patchwork Fri Feb 20 05:10:09 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Hitendra Prajapati X-Patchwork-Id: 81432 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5F275C53215 for ; Fri, 20 Feb 2026 05:12:29 +0000 (UTC) Received: from mail-dy1-f174.google.com (mail-dy1-f174.google.com [74.125.82.174]) by mx.groups.io with SMTP id smtpd.msgproc02-g2.32145.1771564340607900070 for ; Thu, 19 Feb 2026 21:12:20 -0800 Authentication-Results: mx.groups.io; dkim=pass header.i=@mvista.com header.s=google header.b=Xx06re8G; spf=pass (domain: mvista.com, ip: 74.125.82.174, mailfrom: hprajapati@mvista.com) Received: by mail-dy1-f174.google.com with SMTP id 5a478bee46e88-2b86671f87eso3297530eec.0 for ; Thu, 19 Feb 2026 21:12:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mvista.com; s=google; t=1771564340; x=1772169140; darn=lists.openembedded.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=+EenwFtkS/mVVO38Xy5vGySuw4OlshPopoo9FOBni24=; b=Xx06re8GZxaDrH5L3z56EQQ+icXdw7DlPIyRzuCpnyUYHNH8pxFzcs81zMAN1NAXAb 10giLbDqT4SKm5is4lDxQfRYI49d/wniKN4lb3h3hqa0bP21gya4xjN5xyerRPIGITMQ AHSIRJxr78V6R80UP2NqFGdb6Q64FGXJO8BH4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1771564340; x=1772169140; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=+EenwFtkS/mVVO38Xy5vGySuw4OlshPopoo9FOBni24=; b=or6XGKwx3Oloz0P0OlNMBzHfnb8TyvUN5iqOLJl85c14gXJ26pBXVXzK+uG0gLlqyl CwWVIWJX6IPJNBq0bxsjofvhDnzqmxayd2u4KPdYTkEC6NsldLZvIVak0YlgZs9MTKZf 6ab05ydq50LtDGciEspTHSwjIMVXfrY2D7AQvsA2UWpTw33fHJj/mgcJ75IWdmrC+9Tx JNEuHIeaqnnovddcroFnG/dsJkGzFZY6nP45fArrnfKW+WJPeJ69XAE4LdgeJTiBMlId uvxRvdgq2IDW5zddN8s6ht7JhTln9DYKmC5knxJ/0VJ6UlpaAxU98XIttx3Bl8vJrQCS XF+w== X-Gm-Message-State: AOJu0Yw+E5Cnw25480L+GCaLQ6HwiHBT94Jo2hSwdL6xWfxRnI9B3jQC dJeue3s0Lo4R/8SxvMWlRAokBpw/GM4MJ/T4KOVLbn4OP5dXyXKJmGq4BCu+G54cfyp51TFH211 5dB+znd4= X-Gm-Gg: AZuq6aLvAjhyToBT9aY0aJKh3ZGASPI1b/vdg8qC46byQIUy+Na4jhbm1wzjtGXZ4iY PqYr+oDnx7sHh8tPMjcMv4/MGVhD1trgFEtiCsaZZsoKDII1jYd8K8kLZpOVRDrXkqX3PsWzh6I N0d9qTZZbeXS19UmUAdFDXCgB2n2siCqnCjF0X5Gw+RrVN+ALe4jGRYdhX6sJPJZUG4JmNis5No eZIbAOFxE3TVEKW6qDIiatw5AfjsSmaCJV/Z0pDICaErUG2Lf+ap5AH84OsRieeR+FnuiJ9KP9C L6yKSWb3PZKmO2WrKRIDpLJ5hSxH/cXUZ1KArVrTfxfWCVkho9h1TEwEp9v43ByahH7pz6w4yzo PVxSZ6MN263gzBD0Nlhr2aOfJWuo51tCvj9RAuelQcoV4+MgOboSLaxpYeVUr9RlO35FXqVETRW XSRZb9GVSseeGtcUqqkTL4wTrDkibDU4ijsFQ8dPjkPC85 X-Received: by 2002:a05:7300:691f:b0:2ba:8854:e4da with SMTP id 5a478bee46e88-2bd733be0d0mr247573eec.25.1771564339541; Thu, 19 Feb 2026 21:12:19 -0800 (PST) Received: from MVIN00013.mvista.com ([152.59.0.2]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2bacb658521sm21745057eec.16.2026.02.19.21.12.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Feb 2026 21:12:19 -0800 (PST) From: Hitendra Prajapati To: openembedded-core@lists.openembedded.org Cc: Hitendra Prajapati Subject: [scarthgap][PATCHv2] qemu: fix for CVE-2025-11234 Date: Fri, 20 Feb 2026 10:40:09 +0530 Message-ID: <20260220051011.11250-1-hprajapati@mvista.com> X-Mailer: git-send-email 2.50.1 MIME-Version: 1.0 List-Id: X-Webhook-Received: from 45-33-107-173.ip.linodeusercontent.com [45.33.107.173] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Fri, 20 Feb 2026 05:12:29 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/231452 This patch fix use after free in websocket handshake code. Backport patch from debian refer : https://security-tracker.debian.org/tracker/CVE-2025-11234 Signed-off-by: Hitendra Prajapati --- meta/recipes-devtools/qemu/qemu.inc | 2 + .../qemu/qemu/CVE-2025-11234-01.patch | 72 ++++++++ .../qemu/qemu/CVE-2025-11234-02.patch | 174 ++++++++++++++++++ 3 files changed, 248 insertions(+) create mode 100644 meta/recipes-devtools/qemu/qemu/CVE-2025-11234-01.patch create mode 100644 meta/recipes-devtools/qemu/qemu/CVE-2025-11234-02.patch diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc index 748a32215e..ba21d57010 100644 --- a/meta/recipes-devtools/qemu/qemu.inc +++ b/meta/recipes-devtools/qemu/qemu.inc @@ -43,6 +43,8 @@ SRC_URI = "https://download.qemu.org/${BPN}-${PV}.tar.xz \ file://qemu-guest-agent.udev \ file://CVE-2024-8354.patch \ file://CVE-2025-12464.patch \ + file://CVE-2025-11234-01.patch \ + file://CVE-2025-11234-02.patch \ " UPSTREAM_CHECK_REGEX = "qemu-(?P\d+(\.\d+)+)\.tar" diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2025-11234-01.patch b/meta/recipes-devtools/qemu/qemu/CVE-2025-11234-01.patch new file mode 100644 index 0000000000..c3797bc66f --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2025-11234-01.patch @@ -0,0 +1,72 @@ +From 911c814c8cc5f836286bd96694843036db83e99f Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= +Date: Tue, 30 Sep 2025 11:58:35 +0100 +Subject: [PATCH] io: move websock resource release to close method +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The QIOChannelWebsock object releases all its resources in the +finalize callback. This is later than desired, as callers expect +to be able to call qio_channel_close() to fully close a channel +and release resources related to I/O. + +The logic in the finalize method is at most a failsafe to handle +cases where a consumer forgets to call qio_channel_close. + +This adds equivalent logic to the close method to release the +resources, using g_clear_handle_id/g_clear_pointer to be robust +against repeated invocations. The finalize method is tweaked +so that the GSource is removed before releasing the underlying +channel. + +Reviewed-by: Eric Blake +Signed-off-by: Daniel P. Berrangé +(cherry picked from commit 322c3c4f3abee616a18b3bfe563ec29dd67eae63) +Signed-off-by: Michael Tokarev + +CVE: CVE-2025-11234 +Upstream-Status: Backport [https://gitlab.com/qemu-project/qemu/-/commit/911c814c8cc5f836286bd96694843036db83e99f] +Signed-off-by: Hitendra Prajapati +--- + io/channel-websock.c | 11 ++++++++++- + 1 file changed, 10 insertions(+), 1 deletion(-) + +diff --git a/io/channel-websock.c b/io/channel-websock.c +index de39f0d18..1aac3c88a 100644 +--- a/io/channel-websock.c ++++ b/io/channel-websock.c +@@ -922,13 +922,13 @@ static void qio_channel_websock_finalize(Object *obj) + buffer_free(&ioc->encinput); + buffer_free(&ioc->encoutput); + buffer_free(&ioc->rawinput); +- object_unref(OBJECT(ioc->master)); + if (ioc->io_tag) { + g_source_remove(ioc->io_tag); + } + if (ioc->io_err) { + error_free(ioc->io_err); + } ++ object_unref(OBJECT(ioc->master)); + } + + +@@ -1219,6 +1219,15 @@ static int qio_channel_websock_close(QIOChannel *ioc, + QIOChannelWebsock *wioc = QIO_CHANNEL_WEBSOCK(ioc); + + trace_qio_channel_websock_close(ioc); ++ buffer_free(&wioc->encinput); ++ buffer_free(&wioc->encoutput); ++ buffer_free(&wioc->rawinput); ++ if (wioc->io_tag) { ++ g_clear_handle_id(&wioc->io_tag, g_source_remove); ++ } ++ if (wioc->io_err) { ++ g_clear_pointer(&wioc->io_err, error_free); ++ } + return qio_channel_close(wioc->master, errp); + } + +-- +2.50.1 + diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2025-11234-02.patch b/meta/recipes-devtools/qemu/qemu/CVE-2025-11234-02.patch new file mode 100644 index 0000000000..364d19457d --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2025-11234-02.patch @@ -0,0 +1,174 @@ +From cebdbd038e44af56e74272924dc2bf595a51fd8f Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= +Date: Tue, 30 Sep 2025 12:03:15 +0100 +Subject: [PATCH] io: fix use after free in websocket handshake code +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +If the QIOChannelWebsock object is freed while it is waiting to +complete a handshake, a GSource is leaked. This can lead to the +callback firing later on and triggering a use-after-free in the +use of the channel. This was observed in the VNC server with the +following trace from valgrind: + +==2523108== Invalid read of size 4 +==2523108== at 0x4054A24: vnc_disconnect_start (vnc.c:1296) +==2523108== by 0x4054A24: vnc_client_error (vnc.c:1392) +==2523108== by 0x4068A09: vncws_handshake_done (vnc-ws.c:105) +==2523108== by 0x44863B4: qio_task_complete (task.c:197) +==2523108== by 0x448343D: qio_channel_websock_handshake_io (channel-websock.c:588) +==2523108== by 0x6EDB862: UnknownInlinedFun (gmain.c:3398) +==2523108== by 0x6EDB862: g_main_context_dispatch_unlocked.lto_priv.0 (gmain.c:4249) +==2523108== by 0x6EDBAE4: g_main_context_dispatch (gmain.c:4237) +==2523108== by 0x45EC79F: glib_pollfds_poll (main-loop.c:287) +==2523108== by 0x45EC79F: os_host_main_loop_wait (main-loop.c:310) +==2523108== by 0x45EC79F: main_loop_wait (main-loop.c:589) +==2523108== by 0x423A56D: qemu_main_loop (runstate.c:835) +==2523108== by 0x454F300: qemu_default_main (main.c:37) +==2523108== by 0x73D6574: (below main) (libc_start_call_main.h:58) +==2523108== Address 0x57a6e0dc is 28 bytes inside a block of size 103,608 free'd +==2523108== at 0x5F2FE43: free (vg_replace_malloc.c:989) +==2523108== by 0x6EDC444: g_free (gmem.c:208) +==2523108== by 0x4053F23: vnc_update_client (vnc.c:1153) +==2523108== by 0x4053F23: vnc_refresh (vnc.c:3225) +==2523108== by 0x4042881: dpy_refresh (console.c:880) +==2523108== by 0x4042881: gui_update (console.c:90) +==2523108== by 0x45EFA1B: timerlist_run_timers.part.0 (qemu-timer.c:562) +=2523108== by 0x45EC765: main_loop_wait (main-loop.c:600) +==2523108== by 0x423A56D: qemu_main_loop (runstate.c:835) +==2523108== by 0x454F300: qemu_default_main (main.c:37) +==2523108== by 0x73D6574: (below main) (libc_start_call_main.h:58) +==2523108== Block was alloc'd at +==2523108== at 0x5F343F3: calloc (vg_replace_malloc.c:1675) +==2523108== by 0x6EE2F81: g_malloc0 (gmem.c:133) +==2523108== by 0x4057DA3: vnc_connect (vnc.c:3245) +==2523108== by 0x448591B: qio_net_listener_channel_func (net-listener.c:54) +==2523108== by 0x6EDB862: UnknownInlinedFun (gmain.c:3398) +==2523108== by 0x6EDB862: g_main_context_dispatch_unlocked.lto_priv.0 (gmain.c:4249) +==2523108== by 0x6EDBAE4: g_main_context_dispatch (gmain.c:4237) +==2523108== by 0x45EC79F: glib_pollfds_poll (main-loop.c:287) +==2523108== by 0x45EC79F: os_host_main_loop_wait (main-loop.c:310) +==2523108== by 0x45EC79F: main_loop_wait (main-loop.c:589) +==2523108== by 0x423A56D: qemu_main_loop (runstate.c:835) +==2523108== by 0x454F300: qemu_default_main (main.c:37) +==2523108== by 0x73D6574: (below main) (libc_start_call_main.h:58) +==2523108== + +The above can be reproduced by launching QEMU with + + $ qemu-system-x86_64 -vnc localhost:0,websocket=5700 + +and then repeatedly running: + + for i in {1..100}; do + (echo -n "GET / HTTP/1.1" && sleep 0.05) | nc -w 1 localhost 5700 & + done + +CVE-2025-11234 +Reported-by: Grant Millar | Cylo +Reviewed-by: Eric Blake +Signed-off-by: Daniel P. Berrangé +(cherry picked from commit b7a1f2ca45c7865b9e98e02ae605a65fc9458ae9) +Signed-off-by: Michael Tokarev + +CVE: CVE-2025-11234 +Upstream-Status: Backport [https://gitlab.com/qemu-project/qemu/-/commit/cebdbd038e44af56e74272924dc2bf595a51fd8f] +Signed-off-by: Hitendra Prajapati +--- + include/io/channel-websock.h | 3 ++- + io/channel-websock.c | 22 ++++++++++++++++------ + 2 files changed, 18 insertions(+), 7 deletions(-) + +diff --git a/include/io/channel-websock.h b/include/io/channel-websock.h +index e180827c5..6700cf894 100644 +--- a/include/io/channel-websock.h ++++ b/include/io/channel-websock.h +@@ -61,7 +61,8 @@ struct QIOChannelWebsock { + size_t payload_remain; + size_t pong_remain; + QIOChannelWebsockMask mask; +- guint io_tag; ++ guint hs_io_tag; /* tracking handshake task */ ++ guint io_tag; /* tracking watch task */ + Error *io_err; + gboolean io_eof; + uint8_t opcode; +diff --git a/io/channel-websock.c b/io/channel-websock.c +index 1aac3c88a..583ea8618 100644 +--- a/io/channel-websock.c ++++ b/io/channel-websock.c +@@ -545,6 +545,7 @@ static gboolean qio_channel_websock_handshake_send(QIOChannel *ioc, + trace_qio_channel_websock_handshake_fail(ioc, error_get_pretty(err)); + qio_task_set_error(task, err); + qio_task_complete(task); ++ wioc->hs_io_tag = 0; + return FALSE; + } + +@@ -560,6 +561,7 @@ static gboolean qio_channel_websock_handshake_send(QIOChannel *ioc, + trace_qio_channel_websock_handshake_complete(ioc); + qio_task_complete(task); + } ++ wioc->hs_io_tag = 0; + return FALSE; + } + trace_qio_channel_websock_handshake_pending(ioc, G_IO_OUT); +@@ -586,6 +588,7 @@ static gboolean qio_channel_websock_handshake_io(QIOChannel *ioc, + trace_qio_channel_websock_handshake_fail(ioc, error_get_pretty(err)); + qio_task_set_error(task, err); + qio_task_complete(task); ++ wioc->hs_io_tag = 0; + return FALSE; + } + if (ret == 0) { +@@ -597,7 +600,7 @@ static gboolean qio_channel_websock_handshake_io(QIOChannel *ioc, + error_propagate(&wioc->io_err, err); + + trace_qio_channel_websock_handshake_reply(ioc); +- qio_channel_add_watch( ++ wioc->hs_io_tag = qio_channel_add_watch( + wioc->master, + G_IO_OUT, + qio_channel_websock_handshake_send, +@@ -907,11 +910,12 @@ void qio_channel_websock_handshake(QIOChannelWebsock *ioc, + + trace_qio_channel_websock_handshake_start(ioc); + trace_qio_channel_websock_handshake_pending(ioc, G_IO_IN); +- qio_channel_add_watch(ioc->master, +- G_IO_IN, +- qio_channel_websock_handshake_io, +- task, +- NULL); ++ ioc->hs_io_tag = qio_channel_add_watch( ++ ioc->master, ++ G_IO_IN, ++ qio_channel_websock_handshake_io, ++ task, ++ NULL); + } + + +@@ -922,6 +926,9 @@ static void qio_channel_websock_finalize(Object *obj) + buffer_free(&ioc->encinput); + buffer_free(&ioc->encoutput); + buffer_free(&ioc->rawinput); ++ if (ioc->hs_io_tag) { ++ g_source_remove(ioc->hs_io_tag); ++ } + if (ioc->io_tag) { + g_source_remove(ioc->io_tag); + } +@@ -1222,6 +1229,9 @@ static int qio_channel_websock_close(QIOChannel *ioc, + buffer_free(&wioc->encinput); + buffer_free(&wioc->encoutput); + buffer_free(&wioc->rawinput); ++ if (wioc->hs_io_tag) { ++ g_clear_handle_id(&wioc->hs_io_tag, g_source_remove); ++ } + if (wioc->io_tag) { + g_clear_handle_id(&wioc->io_tag, g_source_remove); + } +-- +2.50.1 +