diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/CVE-2022-0216_2.patch')
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu/CVE-2022-0216_2.patch | 52 |
1 files changed, 52 insertions, 0 deletions
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 <mcascell@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 <mcascell@redhat.com> +Tested-by: Alexander Bulekov <alxndr@bu.edu> +Message-Id: <20220711123316.421279-1-mcascell@redhat.com> +Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> + +Upstream-Status: Backport [4367a20cc442c56b05611b4224de9a61908f9eac] +CVE: CVE-2022-0216 + +Signed-off-by: Sakib Sajal <sakib.sajal@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 + |