diff options
| author |   Minjae Kim <flowergom@gmail.com> | 2021-04-27 17:03:45 +0900 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2021-05-01 22:46:42 +0100 |
| commit | 97ec10a1d7111dafde8609176ffa9e13cc1b8f1f (patch) | |
| tree | ecc0745435a2b970ed6b5e9a0a94f872a65e0d28 /meta/recipes-devtools | |
| parent | 4c8a675e436e8e6b08baa5b4709244c04cc8f6f1 (diff) | |
| download | openembedded-core-contrib-97ec10a1d7111dafde8609176ffa9e13cc1b8f1f.tar.gz | |
qemu: fix CVE-2021-3392
scsi: use-after-free in mptsas_process_scsi_io_request() of mptsas1068 emulator
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-devtools')
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu.inc | 1 | ||||
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu/CVE-2021-3392.patch | 45 |
2 files changed, 46 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc index 46b784241e..062d7907cf 100644 --- a/meta/recipes-devtools/qemu/qemu.inc +++ b/meta/recipes-devtools/qemu/qemu.inc @@ -54,6 +54,7 @@ SRC_URI = "https://download.qemu.org/${BPN}-${PV}.tar.xz \ file://CVE-2021-3416_9.patch \ file://CVE-2021-3416_10.patch \ file://CVE-2021-20257.patch \ + file://CVE-2021-3392.patch \ " UPSTREAM_CHECK_REGEX = "qemu-(?P<pver>\d+(\.\d+)+)\.tar" diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2021-3392.patch b/meta/recipes-devtools/qemu/qemu/CVE-2021-3392.patch new file mode 100644 index 0000000000..1c688827db --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2021-3392.patch @@ -0,0 +1,45 @@ +From 3431b01b43584de5f710c40605fe3251f81c0e11 Mon Sep 17 00:00:00 2001 +From: Minjae Kim <flowergom@gmail.com> +Date: Tue, 27 Apr 2021 02:09:49 +0000 +Subject: [PATCH] scsi: mptsas: dequeue request object in case of an error + (CVE-2021-3392) + +From: Prasad J Pandit <pjp@fedoraproject.org> + +While processing SCSI i/o requests in mptsas_process_scsi_io_request(), +the Megaraid emulator appends new MPTSASRequest object 'req' to +the 's->pending' queue. In case of an error, this same object gets +dequeued in mptsas_free_request() only if SCSIRequest object +'req->sreq' is initialised. This may lead to a use-after-free issue. +Unconditionally dequeue 'req' object from 's->pending' to avoid it. + +Fixes: CVE-2021-3392 +Buglink: https://bugs.launchpad.net/qemu/+bug/1914236 +Reported-by: Cheolwoo Myung <cwmyung@snu.ac.kr> +Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> + +Upstream-Status: Acepted +[https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg00488.html] +CVE: CVE-2021-3392 +Signed-off-by: Minjae Kim <flowergom@gmail.com> +--- + hw/scsi/mptsas.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/hw/scsi/mptsas.c b/hw/scsi/mptsas.c +index f86616544..adff5b0bf 100644 +--- a/hw/scsi/mptsas.c ++++ b/hw/scsi/mptsas.c +@@ -257,8 +257,8 @@ static void mptsas_free_request(MPTSASRequest *req) + req->sreq->hba_private = NULL; + scsi_req_unref(req->sreq); + req->sreq = NULL; +- QTAILQ_REMOVE(&s->pending, req, next); + } ++ QTAILQ_REMOVE(&s->pending, req, next); + qemu_sglist_destroy(&req->qsg); + g_free(req); + } +-- +2.17.1 + |