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| author | John Millikin <john@john-millikin.com> | 2022-08-17 14:34:58 +0900 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-09-01 07:42:37 +0200 |
| commit | fe9d8927e265fd723a6dc87cd6d220f4677dbe1f (patch) | |
| tree | 0e2d306704d29e6a06cc10b7a320afcbb31279a1 /hw/usb/dev-storage.c | |
| parent | c6e51f1bb28ed762d2039c063cbb71a8ad29762d (diff) | |
| download | qemu-fe9d8927e265fd723a6dc87cd6d220f4677dbe1f.zip qemu-fe9d8927e265fd723a6dc87cd6d220f4677dbe1f.tar.gz qemu-fe9d8927e265fd723a6dc87cd6d220f4677dbe1f.tar.bz2 | |
scsi: Add buf_len parameter to scsi_req_new()
When a SCSI command is received from the guest, the CDB length implied
by the first byte might exceed the number of bytes the guest sent. In
this case scsi_req_new() will read uninitialized data, causing
unpredictable behavior.
Adds the buf_len parameter to scsi_req_new() and plumbs it through the
call stack.
Signed-off-by: John Millikin <john@john-millikin.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1127
Message-Id: <20220817053458.698416-1-john@john-millikin.com>
[Fill in correct length for adapters other than ESP. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/usb/dev-storage.c')
| -rw-r--r-- | hw/usb/dev-storage.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/usb/dev-storage.c b/hw/usb/dev-storage.c index dca62d5..9863969 100644 --- a/hw/usb/dev-storage.c +++ b/hw/usb/dev-storage.c @@ -415,7 +415,7 @@ static void usb_msd_handle_data(USBDevice *dev, USBPacket *p) cbw.cmd_len, s->data_len); assert(le32_to_cpu(s->csw.residue) == 0); s->scsi_len = 0; - s->req = scsi_req_new(scsi_dev, tag, cbw.lun, cbw.cmd, NULL); + s->req = scsi_req_new(scsi_dev, tag, cbw.lun, cbw.cmd, cbw.cmd_len, NULL); if (s->commandlog) { scsi_req_print(s->req); } |