Backport relevant patches to fix CVE-2022-0216. Signed-off-by: Sakib Sajal <sakib.sa...@windriver.com> --- meta/recipes-devtools/qemu/qemu.inc | 2 + .../qemu/qemu/CVE-2022-0216_1.patch | 42 +++++++++++++++ .../qemu/qemu/CVE-2022-0216_2.patch | 52 +++++++++++++++++++ 3 files changed, 96 insertions(+) create mode 100644 meta/recipes-devtools/qemu/qemu/CVE-2022-0216_1.patch create mode 100644 meta/recipes-devtools/qemu/qemu/CVE-2022-0216_2.patch
diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc index 44d4c9ca2f..a493ac8add 100644 --- a/meta/recipes-devtools/qemu/qemu.inc +++ b/meta/recipes-devtools/qemu/qemu.inc @@ -41,6 +41,8 @@ SRC_URI = "https://download.qemu.org/${BPN}-${PV}.tar.xz \ file://CVE-2021-3929.patch \ file://CVE-2021-4158.patch \ file://CVE-2022-0358.patch \ + file://CVE-2022-0216_1.patch \ + file://CVE-2022-0216_2.patch \ " UPSTREAM_CHECK_REGEX = "qemu-(?P<pver>\d+(\.\d+)+)\.tar" diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2022-0216_1.patch b/meta/recipes-devtools/qemu/qemu/CVE-2022-0216_1.patch new file mode 100644 index 0000000000..de7458fc72 --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2022-0216_1.patch @@ -0,0 +1,42 @@ +From 1cedc914b2c4b4e0c9dfcd1b0e02917af35b5eb6 Mon Sep 17 00:00:00 2001 +From: Mauro Matteo Cascella <mcasc...@redhat.com> +Date: Tue, 5 Jul 2022 22:05:43 +0200 +Subject: [PATCH 1/3] scsi/lsi53c895a: fix use-after-free in lsi_do_msgout + (CVE-2022-0216) + +Set current_req->req to NULL to prevent reusing a free'd buffer in case of +repeated SCSI cancel requests. Thanks to Thomas Huth for suggesting the patch. + +Fixes: CVE-2022-0216 +Resolves: https://gitlab.com/qemu-project/qemu/-/issues/972 +Signed-off-by: Mauro Matteo Cascella <mcasc...@redhat.com> +Reviewed-by: Thomas Huth <th...@redhat.com> +Message-Id: <20220705200543.2366809-1-mcasc...@redhat.com> +Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> + +Upstream-Status: Backport [6c8fa961da5e60f574bb52fd3ad44b1e9e8ad4b8] +CVE: CVE-2022-0216 + +Signed-off-by: Sakib Sajal <sakib.sa...@windriver.com> +--- + hw/scsi/lsi53c895a.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c +index 85e907a78..8033cf050 100644 +--- a/hw/scsi/lsi53c895a.c ++++ b/hw/scsi/lsi53c895a.c +@@ -1029,8 +1029,9 @@ static void lsi_do_msgout(LSIState *s) + case 0x0d: + /* The ABORT TAG message clears the current I/O process only. */ + trace_lsi_do_msgout_abort(current_tag); +- if (current_req) { ++ if (current_req && current_req->req) { + scsi_req_cancel(current_req->req); ++ current_req->req = NULL; + } + lsi_disconnect(s); + break; +-- +2.33.0 + diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2022-0216_2.patch b/meta/recipes-devtools/qemu/qemu/CVE-2022-0216_2.patch new file mode 100644 index 0000000000..12f5a602da --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2022-0216_2.patch @@ -0,0 +1,52 @@ +From 8f2c2cb908758192d5ebc00605cbf0989b8a507c Mon Sep 17 00:00:00 2001 +From: Mauro Matteo Cascella <mcasc...@redhat.com> +Date: Mon, 11 Jul 2022 14:33:16 +0200 +Subject: [PATCH 3/3] scsi/lsi53c895a: really fix use-after-free in + lsi_do_msgout (CVE-2022-0216) + +Set current_req to NULL, not current_req->req, to prevent reusing a free'd +buffer in case of repeated SCSI cancel requests. Also apply the fix to +CLEAR QUEUE and BUS DEVICE RESET messages as well, since they also cancel +the request. + +Thanks to Alexander Bulekov for providing a reproducer. + +Fixes: CVE-2022-0216 +Resolves: https://gitlab.com/qemu-project/qemu/-/issues/972 +Signed-off-by: Mauro Matteo Cascella <mcasc...@redhat.com> +Tested-by: Alexander Bulekov <alx...@bu.edu> +Message-Id: <20220711123316.421279-1-mcasc...@redhat.com> +Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> + +Upstream-Status: Backport [4367a20cc442c56b05611b4224de9a61908f9eac] +CVE: CVE-2022-0216 + +Signed-off-by: Sakib Sajal <sakib.sa...@windriver.com> +--- + hw/scsi/lsi53c895a.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c +index 8033cf050..fbe3fa3dd 100644 +--- a/hw/scsi/lsi53c895a.c ++++ b/hw/scsi/lsi53c895a.c +@@ -1031,7 +1031,7 @@ static void lsi_do_msgout(LSIState *s) + trace_lsi_do_msgout_abort(current_tag); + if (current_req && current_req->req) { + scsi_req_cancel(current_req->req); +- current_req->req = NULL; ++ current_req = NULL; + } + lsi_disconnect(s); + break; +@@ -1057,6 +1057,7 @@ static void lsi_do_msgout(LSIState *s) + /* clear the current I/O process */ + if (s->current) { + scsi_req_cancel(s->current->req); ++ current_req = NULL; + } + + /* As the current implemented devices scsi_disk and scsi_generic +-- +2.33.0 + -- 2.33.0
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